ON Semiconductor Corporation (NASDAQ: ON) Q4 2021 earnings call dated Feb. 07, 2022
Corporate Participants:
Parag Agarwal — Vice President, Investor Relations and Corporate Development
Hassane El-Khoury — President and Chief Executive Officer
Thad Trent — Executive Vice President and Chief Financial Officer
Analysts:
Ross Seymore — Deutsche Bank — Analyst
Chris Danely — Citigroup — Analyst
Vivek Arya — Bank of America Securities — Analyst
Toshiya Hari — Goldman Sachs — Analyst
Josh Buchalter — Cowen — Analyst
Harsh Kumar — Piper Sandler — Analyst
Vijay Rakesh — Mizuho — Analyst
Chris Caso — Raymond James — Analyst
John Pitzer — Credit Suisse — Analyst
Christopher Rolland — Susquehanna — Analyst
William Stein — Truist Securities — Analyst
Harlan Sur — JPMorgan — Analyst
Tore Svanberg — Stifel — Analyst
Rajvindra Gill — Needham & Company — Analyst
Presentation:
Operator
Good morning. My name is Rob and I will be your conference operator today. At this time, I would like to welcome everyone to the onsemi Fourth Quarter 2021 Earnings Conference Call. [Operator Instructions] Thank you.
Parag Agarwal, Vice President of Investor Relations and Corporate Development, you may begin your conference.
Parag Agarwal — Vice President, Investor Relations and Corporate Development
Thank you, Rob. Good morning and thank you for joining onsemi’s fourth quarter ’21 quarterly results conference call. I’m joined today by Hassane El-Khoury, our President and CEO; and Thad Trent, our CFO.
This call is being webcast on the Investor Relations section of our website at www.onsemi.com. A replay of this broadcast, along with our 2021 fourth quarter earnings release, will be available on our website approximately one hour following this conference call and a recorded webcast will be available for approximately 30 days following this conference call. Additional information related to our end markets, business segments, geographies, channels, share count and 2022 fiscal calendar is posted on the Investor Relations section of our website.
Our earnings release and this presentation includes certain non-GAAP financial measures. Reconciliations of these non-GAAP financial measures to the most directly comparable measures under GAAP are included in our earnings release, which is posted separately on our website in the Investor Relations section.
During the course of this conference call, we will make projections or other forward-looking statements regarding future events or the future financial performance of the company. The words believe, estimate, project, anticipate, intend, may, expect, will, plan, should or similar expressions are intended to identify forward-looking statements. We wish to caution that such statements are subject to risks and uncertainties that could cause actual events or results to differ materially from projections. Important factors that can affect our business, including factors that could cause actual results to differ from our forward-looking statements, are described in our most recent Form 10-Ks, Form 10-Qs and other filings with the Securities and Exchange Commission.
Additional factors are described in our earnings release for the fourth quarter of 2021. Our estimates and other forward-looking statements may change and the company assumes no obligation to update forward-looking statements to reflect actual results, changed assumptions or other events that may occur, except as required by law.
Now, let me turn over to Hassane. Hassane?
Hassane El-Khoury — President and Chief Executive Officer
Thank you, Parag. And thank you everyone for joining us today. As we wrap up 2021, I’m extremely pleased with the progress of our transformation journey. We have positioned onsemi as a leader in intelligent power and sensing by focusing on enabling sustainable ecosystem. We have implemented structural changes to focus our investments and resources on the mega trends of vehicle electrification, ADAS, energy infrastructure and factory automation and this is evidenced by our record financial performance.
As we have shifted to focus on the high-value markets of automotive and industrial, both the price to value discrepancies and improved manufacturing efficiencies, we have expanded our margins to achieve the target model ahead of our stated timeline. Our customers view onsemi as a strategic partner as evidenced by the execution of multiple long-term supply agreements, which provide better demand visibility for capacity planning and investments to support it. To that end, the acquisition of GTAT expands our leadership in silicon carbide and provides our customers the assurance of supply required to support this rapidly growing market.
Additionally, we are exiting volatile and highly competitive non-core businesses and focusing on profitable growth and sustainable financial performance. In 2021, our revenue increased 28% while our operating income and free cash flow increased approximately 6 times faster, demonstrating the operating leverage in our model as we continue on our transformation journey. We had a successful year amid the ongoing pandemic and supply chain challenges that continue to affect the market. Our performance has only been possible, thanks to the dedication of our worldwide teams and I’d like to take the opportunity to thank them for their hard work.
Moving on to the fourth quarter. Our fourth quarter was yet another example of exceptional execution by our worldwide teams and a strong demand environment for our market-leading intelligent power and sensing products. Although we met our margin targets ahead of schedule, we expect that with ongoing mix optimization, the manufacturing consolidation we have begun and the continued ramp of new products, we have headroom to further expand our margins over the coming years.
We continue to see strong demand for our products. And in 2021, our design win funnel grew over 60% year-over-year and our new product revenue grew 28% from 2020. This design win performance, along with long-term supply agreements, have positioned the company for sustained long-term growth. The fourth quarter revenue growth was driven by additional capacity coming online from our investments earlier in the year and an accelerated focus to free up existing capacity to service our strategic markets, consistent with our stated goal of exiting low margin non-core products.
We are making selective investments in our internal operations to expand capacity for strategic products and, at the same time, we are relieving bottlenecks in our internal manufacturing operations. We have also been successful in securing additional capacity from our external manufacturing partners. Long-term, we are qualifying products in the 300-millimeter East Fishkill facility to increase the efficiency of our fab network, while executing our fab lighter strategy. This will allow us to further expand both the capacity for products in our strategic markets and our gross margin over time, given the cost benefits.
The current supply-demand imbalance in the semiconductor industry will likely persist through 2022 and continue into 2023. Based on interactions with our customers and channel partners, we believe that the semiconductor inventory throughout the supply chain remains low and lead times are stretched for the industry. The supply constraint is further compounded by accelerating demand for electric vehicles, ADAS, energy infrastructure and factory automation and the increase of content in these applications.
During the fourth quarter, we saw an increase of approximately $600 million in committed revenue for our silicon carbide products, bringing our current committed revenue to over $2.6 billion through 2024. Over 70% of this committed revenue is for electric vehicle traction applications with the integrated end-to-end supply chain and market-leading efficiency of our silicon carbide products as our competitive advantage. To support the steep growth in our silicon carbide revenue over the next few years, we plan to more than quadruple the capacity of our substrate operations exiting 2022 and intend on making substantial investments in expanding our device and module capacity.
In 2022, we expect our silicon carbide revenue to more than double year-over-year as we continue to ramp with our existing customers and begin shipments to new customers under our LTSAs. We remain on track to exit 2023 with a silicon carbide run rate of $1 billion per year. In addition, we continue to make progress on the 200-millimeter silicon carbide development program that we acquired from GTAT. In January, we received finished 200-millimeter thick wafers with device yields meeting our production targets. These wafers were manufactured using our full capabilities from bowls [Phonetic] to substrate all the way through our own fabs.
Our silicon carbide modules are powering the recently announced Mercedes EQXX research prototype electric vehicle platform, which has a range of 620 miles on a single charge. We secured this design based on all around superior performance of our modules across efficiency, thermal conduction and switching. This win clearly demonstrates our technical leadership and end-to-end supply chain capabilities for silicon carbide.
Our focus on power modules for alternative energy applications delivered a 42% year-over-year growth in our design funnel in 2021. We assigned LTSAs with key players in the solar inverter market, including the top two market share leaders. We expect our renewable energy-related revenue to grow by over 50% year-over-year in 2022 and expect the alternative energy market to be a long-term driver for our business as utility-scale power plant installations are expected to grow worldwide to reduce the climate impact of fossil fuel-based power plants.
On the intelligent sensing front, our automotive imaging revenue grew by more than 20% quarter-over-quarter and approximately 40% year-over-year as we continue to see momentum in advanced safety with new design wins. With consumers’ desire for additional safety features and an improved driving experience, we are seeing increased penetration of sensing in cars, including image sensors and ultrasonic sensing at the same time content per car is growing with each camera attached to one of our PMICs.
We are also seeing accelerating demand for our imaging products for industrial and factory automation, in which revenue grew by approximately 10% quarter-over-quarter and 43% year-over-year. Industrial customers are investing in automation at an increased pace to improve efficiency and to reduce volatility in operations due to wage inflation and labor shortages, onshoring and social distancing mandates.
We have leveraged our experience in the automotive market to offer our industrial customers, rugged high resolution and high image quality sensors for the most demanding industrial applications. All of these execution vectors delivered a robust margin performance exceeding our target gross margin of 45% significantly ahead of schedule. This accelerated gross margin expansion was driven by a strong and accelerated execution in closing price to value discrepancy, cost reduction initiatives, a focused drive on ramping new products, the deliberate intent to shift more capacity to products for our strategic markets and operational efficiency across our manufacturing footprint, all consistent with the strategy outlined at our Analyst Day.
Along with making operational changes to drive the margin expansion, we are refining our execution in the channel to ensure that our partners are focused on driving growth in automotive and industrial end markets, consistent with our strategy.
Throughout the year, our team worked extremely hard to pull in the schedule for engineering and operations effort dedicated to margin improvements to offset some increased material costs we have incurred. We have work to improve yields and ship more units into the automotive and industrial end markets, which deliver an improved margin profile for our business and help support more of our customers’ demand. In the fourth quarter, automotive and industrial grew 10% quarter-over-quarter to 63% of our revenue as compared to 61% in the third quarter, both delivering record quarters of $641 million and $522 million respectively.
In a supply constrained environment, this growth came from the increased units we could ship and, more importantly, from the strategic mix shift away from non-core low margin business that we intended to exit. In 2021, we walked away from a $170 million of non-core business with an average gross margin of 20%.
Now, I will turn the call over to Thad to provide additional details on our financials and guidance. Thad?
Thad Trent — Executive Vice President and Chief Financial Officer
Thanks, Hassane. I’ll start out with providing an overview of the results for the full year 2021, then step through the Q4 results and guidance for the first quarter of ’22 and wrap up with an update to our long-term model.
2021 was an exceptional year as we transform the company to drive sustainable performance and shareholder value. We have pivoted to align our investments to the high growth mega trends in automotive and industrial, while implementing structural changes, capturing value for our differentiated portfolio and optimizing our manufacturing footprint to increase efficiency and improve our cost structure. These initiatives are translating into financial results as we achieved our record annual and quarterly revenue, gross margin, operating margin and cash flow.
Our 2021 revenue was $6.74 billion, increasing 28.3% over 2020. Our automotive business increased 36% year-over-year and our industrial revenue increased 33% as we continue to see content gains in each segment, driven by automation, electrification and advanced safety.
Our non-GAAP gross margins for the year improved 770 basis points to 40.4% and we exited the year exceeding our 45% long-term target in Q4. Since embarking on our transformation journey a year ago, we’ve improved our non-GAAP gross margin by 1,080 basis points. 2021 operating income and free cash flow increased approximately 6 times faster than revenue with non-GAAP operating margin improving to 21.9%, while free cash flow increased to $1.3 billion or 20% of revenue.
While we have had significant achievements over the last year, we are excited about the opportunities in front of us. Our design win funnel for intelligent power and sensing is expanding at a rapid rate and we are securing additional capacity to support our growth from external partners and with selective internal investments for strategic products.
From a margin perspective, we expect mix optimization and our fab lighter strategy to drive further expansion. Our long-term supply agreements are providing increased visibility for revenue growth and we are confident that the structural changes in the decisions we made last year solidified our baseline to allowing for sustainable margin expansion over the long-term.
Consistent with our fab lighter strategy, we have taken the first steps towards rationalizing our manufacturing footprint by entering into a definitive agreement for the sale of our 6-inch fab in Belgium. This transaction provides our employees with continued employment and growth opportunities, while allowing onsemi to transition product to other manufacturing sites in an orderly manner. By transitioning production to more efficient fabs within our network, we will eliminate fixed cost and lower unit cost while ensuring a consistent supply of products to our customers. We expect to close this divestiture in the first quarter of 2022 and the savings will be realized over one to three years as we exit the Belgium site.
Turning to results for the fourth quarter. As I noted, Q4 was another quarter of record results. Total revenue for the fourth quarter was $1.85 billion, an increase of 28% over the fourth quarter of 2020 and 6% quarter-over-quarter. The sequential increase in revenue was driven by units shipped, increasing 5.7% sequentially and favorable mix in pricing across all end markets. Revenue from both intelligent power and intelligent sensing was at record levels, while revenue from our strategic end markets of automotive and industrial increased sequentially 11% and 9% respectively. Auto and industrial was 63% of revenue as compared to 59% in the fourth quarter of 2020.
Turning to the business units. Revenue for the Power Solutions Group, or PSG, was $953.4 million, an increase of 33% year-over-year. Revenue for the Advanced Solutions Group, or ASG, was $647.3 million, an increase of 24% year-over-year. Revenue for Intelligent Sensing Group, or ISG, for the fourth quarter was $245.4 million, an increase of 18% year-over-year.
GAAP gross margins for the fourth quarter was 45.1% and non-GAAP gross margin was 45.2%, a 370 basis point improvement quarter-over-quarter. The key contributors to our margin expansion has been favorable mix shift to higher margin and strategic products, elimination of price to value discrepancies in our portfolio and improved efficiencies in our manufacturing operations.
Over the last year, we have exited approximately $170 million of non-core revenue at an average gross margin of 20% and allocated this capacity to strategic products for the accretive gross margins. Our factory utilization was 81%, up slightly from the Q3 level of 80% and we expect utilization to remain approximately at this level in Q1.
We also achieved record quarterly GAAP and non-GAAP operating margins of 26% and 28.6% respectively in the fourth quarter, again achieving our long-term model. GAAP earnings per share for the fourth quarter was $0.96 and non-GAAP EPS was $1.09 per diluted share as compared to $0.35 in the fourth quarter of 2020 and $0.87 in Q3. We are very proud of our teams for having achieved the highest ever quarterly EPS reported by the company.
So now let me give you some additional numbers for your models. GAAP operating expenses for the fourth quarter were $352 million as compared to $330 million in the fourth quarter of 2020. Non-GAAP operating expenses were $306 million as compared to $292 million in the quarter a year ago. Variable compensation, driven by our strong performance, partially offset by cost optimization measures contributed to year-over-year increase in operating expense. We expect to maintain our non-GAAP operating expenses of approximately 17% of revenue consistent with our target model. We intend to offset the impact of wage inflation on operating expenses through higher efficiency and reallocation of resources to drive growth and margin expansion.
Our GAAP diluted share count was 445.3 million shares and our non-GAAP diluted share count was 438.4 million. Please note that we have an updated reference stable on the Investor Relations section of our website to assist you with calculating our diluted share count at various share prices.
Turning to the Q4 balance sheet. Cash and cash equivalents was $1.3 billion, after payment of $416 million for the GTAT acquisition in Q4. We had $1.97 billion undrawn on our revolver. Cash from operations was $627 million and free cash flow was $457 million or approximately 25% of revenue. Capital expenditures during the fourth quarter were $169.6 million, which equate to a capital intensity of 9%. For the full year 2021, capital intensity was 6.6%. As we indicated previously, we are directing a significant portion of our capital expenditures towards enabling our 300-millimeter capabilities at the East Fishkill fab and the expansion of silicon carbide capacity. This increase is in line with the higher capital intensity in the near-term as mentioned in our Analyst Day.
Accounts receivable was $809 million, resulting in a DSO of 40 days. Inventory increased $52 million sequentially to $1.4 billion and days of inventory increased five days to 124 days. The increase in inventory was driven primarily by additional build of bridge inventory to support the fab transitions. Distribution inventory increased $50 million to 7.3 weeks from 6.8 weeks in Q3. The slight increase was driven by timing of shipments late in the quarter. Weeks of inventory return to Q3 levels within the first two weeks in Q1. Total debt was $3.1 billion and our net leverage is now under 1 times.
Turning to guidance to guidance for the fourth quarter. The table detailing our GAAP and non-GAAP guidance is provided in the press release related to our fourth quarter results. Let me now provide you key elements of our non-GAAP guidance for the fourth quarter. Based on current market trends and booking levels, we believe demand will outpace supply for much of 2022 and we continue to work with our strategic customers to ensure long-term uninterrupted supply. We continue to increase supply through operational efficiencies, selective investments in capacity for strategic products and by working with our external partners to obtain additional capacity.
Based on current booking trends backlog levels, we anticipate that revenue for the first quarter will be in the range of $1.85 billion to $1.95 billion. We expect non-GAAP gross margins between 45.5% and 47.5%. This includes share-based compensation of $3.4 million. We expect total non-GAAP operating expenses of $298 million to $313 million, including share-based compensation of $17.4 million. We anticipate our non-GAAP OI&E will be $21 million to $25 million and this resulted in non-GAAP earnings per share in the range of $0.98 to $1.10. As we have guided in the past, our non-GAAP tax will increase starting in Q1 from our historical rate of 6% to approximately 17.5% as we have substantially utilized our NOL attributes. This change accounts for approximately $0.14 of EPS at the midpoint of our guidance for the first quarter.
We expect total capital expenditures of $150 million to $170 million in the first quarter. As we indicated at our Analyst Day, our capital intensity in the near-term was higher as we ramp up silicon carbide production and invest in 300-millimeter capabilities. Our non-GAAP diluted share count for the first quarter is expected to be approximately 441 million shares.
As I wrap up, I’d like to shift gears to address our long-term model. Our Q4 non-GAAP gross margin of 45.2% exceeded our gross margin target ahead of our anticipated timeline through an acceleration of our expansion initiatives and structural changes. As such, we are raising our 2025 targeted gross margin to 48% to 50%, which will be primarily driven by favorable mix as we phase out of low margin, non-core products and ramp new products in our strategic end markets. We will also continue executing on our fab lighter strategy to reduce our fixed cost structure and overall product cost across the portfolio as we exit subscale fabs over a multi-year period.
To provide a framework for this expansion, we expect 2022 gross margins in the range of 46.5% to 47.5% based on our visibility today. So, our new long-term non-GAAP model is as follows: gross margin of 48% to 50%; opex of 17%; and operating income of 31% to 33%, an increase of 300 to 500 basis points over our previous model of 28%. We believe our early success in our transformation initiatives has positioned onsemi to drive sustained and long-term revenue growth and margin expansion.
These results and outlook are only possible with the dedication of our worldwide team focused on execution and delivery of exceptional value for our customers.
With that, I’d like to start the Q&A. I’ll turn the call back over to Rob to open the line for questions.
Questions and Answers:
Operator
[Operator Instructions] And your first question comes from the line of Ross Seymore from Deutsche Bank. Your line is open.
Ross Seymore — Deutsche Bank — Analyst
Morning, guys. Thanks for letting me ask a question. Congratulations on the results. I guess, just on the first question, or that is on the revenue side. You talked a lot about demand exceeding supply, a lot of good design wins and LTSAs, etc. I wanted to dive into the things you’re walking away from. I think you said last year you got out of about $170 million of business. It seems like there is about $600 million more coming. So, Thad, you gave a good outlook on the gross margin for the year. I know you’re not going to guide revenue every quarter for this year, but I wondered how that incremental exiting process is going to hit and kind of at what pace we should be thinking that.
Thad Trent — Executive Vice President and Chief Financial Officer
Yeah. Let me start with the second part of your question there on the exit. We’d like to do $170 million in 2021. So, as we look into ’22, we think we will exit more of that in the second half of the year, just based on the environment that we see today. So, we think there is another piece. But as we said, this exit will take three-plus years to get out completely of that entire 10% to 15% that we said to exit. But we really think it’s back-end loaded.
Ross Seymore — Deutsche Bank — Analyst
Got it. Thanks for the color on that. And then, the gross margin news, I think, is the news of the day, whether it was the quarter of the guide or the long-term model update. So I just wanted to understand a little bit more deeply. What was the surprise? Are you guys just conservative back in August? It wasn’t that long ago and you’ve already hit the target, so what’s going better than expected? And I think some people might believe that there is some cyclical tailwinds that might not persist. I know you seem to disagree with that. But a breakdown of what surprised you and how much is structural will be helpful.
Hassane El-Khoury — President and Chief Executive Officer
Yeah. This is Hassane. Look, we had a plan. The plan happened faster than we thought. Obviously our plan was tied to a lot of the operational efficiencies and the self-help that we’ve done. We were able to pull in a lot of it. Given the demand environment, we were able to much faster shift to our strategic products. As you saw, auto, and industrial, which for us drive a higher margin as part of the mix shift, have grown sequentially and for the year and outpaced the growth of the other markets that we are walking away from to have that capacity to be able to allocate to our strategic markets. And of course, we’ve been on a trajectory of bridging the price to value discrepancies. We’ve been able to close a lot of that, mostly to offset our rise in costs.
So, all of these have been part of the plan, but the macro allowed us to accelerate them. Because of the demand environment, we’re able to walk away from business and move the capacity to a better mix shift aligned with our stated strategy. So that’s what accelerated. It’s not about conservative, it’s about we to the unknown and the disruptions that we’ve been seeing in 2021, but the team pulled together, whether it’s from improved yield that drove more units. All of these are sustainable, because the mix shift is not related to a market. All markets are up, but we are choosing what to support aligned with our long-term supply agreements. And those extend beyond the next few years and that gives us the visibility and the sustainability of those results.
Ross Seymore — Deutsche Bank — Analyst
Thank you.
Operator
Your next question comes from the line of Chris Danely from Citi. Your line is open.
Chris Danely — Citigroup — Analyst
Hey. Thanks, guys. Thad, congrats on another good results. I guess, on the gross margin guidance going forward, it looks kind of flattish for the time being. Can you just talk about the puts and the takes, what’s going to be pushing those up? And then also, what’s going to be keeping a lid on them, is it material cost or something else?
Thad Trent — Executive Vice President and Chief Financial Officer
Yeah, Chris, it’s Thad. There is a number of elements in there and you kind of hit on it. So we are expecting additional input costs going up. We have been successful in passing those on to the customers, but we do expect that happening. And as Hassane said in the previous response, we pulled down a lot of the acceleration of the gross margin initiatives. We think there’s more here. I think our biggest challenge is, we’ve gotten a lot of operational efficiencies here and can we just get more throughput out of our manufacturing footprint. We do see improvement. If you look at the guidance put out for the year, as you see improvement through the year and obviously with our long-term model of the 40 to 50, we don’t think we’re done.
Chris Danely — Citigroup — Analyst
Yeah. And for my follow-up, can you just be a little more specific on the impact and timing of the Fishkill fab from, I guess, a margin impact and a capacity impact as well?
Thad Trent — Executive Vice President and Chief Financial Officer
Yeah. So, we take ownership in early ’23. At that time, we would have been running production in there. We’ll continue to increase production in there. And then there is a period of time where we continue to ramp up and GlobalFoundries ramps down. So during that time, there is a little bit of a headwind as we’re providing some foundry services to GlobalFoundries until we ramp up. So you can think about a little bit of a headwind for a couple of years there, but there is an orderly transition between the two of them. So, that is all baked into our long-term plan as well, the long-term model.
Chris Danely — Citigroup — Analyst
Got it. Thanks, guys.
Operator
Your next question comes from the line of Vivek Arya from Bank of America Securities. Your line is open.
Vivek Arya — Bank of America Securities — Analyst
Thanks for taking my question. I thought I’m curious, what’s your visibility of inventory of semiconductor components at auto OEMs and Tier 1s? Just from an industry perspective, right, there still seems to be a delta between auto production and semiconductor industry shipments. Is that all mix or pricing? Just conceptually, what are you seeing out there and what is the right way to think about the sustainable content delta when we look at automotive production improving this year?
Hassane El-Khoury — President and Chief Executive Officer
Yeah. Look, the delta is pretty straightforward. The delta between units shipped in automotive and semiconductor is purely based on the mix that our customers are building. When we’ve been throughout 2021 in a supply constraint, we remain in that same supply constraint in 2020 — through 2022 into 2023. So therefore, our customers are doing kind of what we are doing. They’re moving production to their strategic and high value product line, which — or semiconductor translate into more content. When you have premium vehicles being built, they historically and even today have much higher content to the level of 2 to 3 times more content of semiconductors per vehicle. That’s what do you see the discrepancy between the two. That’s a healthy discrepancy because we know — I’ve always talked about content to being the biggest driver for us, regardless of what the SAR does. 2021 is exactly that. Now, you can talk about what the long-term implications of this. I don’t see that being any different. We’ve always guided automotive being much higher than SAR. And that’s related because electrification is happening. You’ve seen those announcements from a lot of the OEMs, where they are doubling down on EVs. That drives much higher content for us in the future than even it is today.
Safety, I talked about more and more sensing going into vehicles. And that drives a lot of our cross-selling as well between our sensing and our PMICs. So all of these are driving a higher growth of semiconductor than your unit growth with SAR. So it’s very reasonable of what the results are in this year and what we are looking at for 2022. So I don’t see that as just a short-term thing because the macro trends extend beyond the next three years.
Vivek Arya — Bank of America Securities — Analyst
Got it. And Hassane, to my follow-up, also interested in your views on the silicon carbide opportunity. So you gave us a few numbers about the exit run rate and the long-term agreements you were signing. And where are the investors are trying to get their arms around is, we hear of a lot of big numbers and pipeline from some of your US competitors, some of the European competitors. Is this a case of just a rising tide so there can be four, five, six successful suppliers? Is there going to be some kind of differentiation between suppliers because everyone is reporting very large pipeline. So I’m curious what is on differentiation and does it change your long-term capex forecast, because I saw that you updated the margin forecast, but you kept free cash flow forecast the same. Thank you.
Hassane El-Khoury — President and Chief Executive Officer
So let me — just I want to highlight some difference between what I talk about and what some of my peers talk about. I don’t talk about funnel or pipeline. I’m talking about committed revenue, which is the output of the funnel fully yielded. Committed revenue is what I labeled it, that is more certain and more visibility than the game of big numbers of funnel disclosures. I don’t disclose funnel or pipeline or whatever we want to label it. So the comments on the numbers, the big numbers I gave are committed revenue under LTSAs that we are building our supply chain in order to service starting at — we exited 2021 and said we’re going to be more than doubling in 2022. That’s where the committed revenue comes in.
Now as far as what that’s going to look like in the industry, look, there is a lot of demand out there, a lot of investments from our customers going into the silicon carbide for electric vehicles. Is it going to be six players or so? I don’t know. I know we’re going to be in the top based on our investment and based on the results of our technology performance on efficiency, but also more importantly the supply assurance that we’re able to give our customers. When you want to double revenue and your flagship customers are depending on you by having supply assurance and controlling rules all the way to wafers is a competitive advantage. And not a lot can claim that. And I’m happy that we have closed the GTAT and we’re performing very well. We’re going to be expanding the GTAT capability throughout 2022 in order to support those committed revenue that I mentioned.
Vivek Arya — Bank of America Securities — Analyst
Thank you.
Operator
Your next question comes from the line of Toshiya Hari from Goldman Sachs. Your line is open.
Toshiya Hari — Goldman Sachs — Analyst
Hi, good morning. Thank you for taking the question and congrats on the strong results. I had two as well. Curious how you’re thinking about full-year ’22 revenue growth at this point. I think three months ago, you had guided us to think about ’22 as a year where you guys under-grow the market, just given some of the dynamics that are ongoing from a portfolio optimization standpoint. Is that still the case? And I asked the question because you guys talked about obviously the strong design win funnel, the improving supply backdrop. And if we take the midpoint of your Q1 guidance, Q1 revenue is going to be up 28%. So curious how you’re thinking about the full year.
Thad Trent — Executive Vice President and Chief Financial Officer
Yeah. Toshiya, we don’t guide for the full year. I’ll give you a little bit of a framework to work on. One of the previous calls or answers — questions was around the exit in the business that as I said we’ll be back-half loaded. I think, when we look at the full year, taking that into consideration, we’re probably growing around market maybe slightly above.
Toshiya Hari — Goldman Sachs — Analyst
Got it. That’s helpful. And then, as my follow-up on that last point, Thad, the $500 million or so in revenue that you’ll be exiting, I guess, over the next couple of years, how should we think about the gross margin profile on that part of part of the business? I think the $170 million that you’ve already exited, you talked about a 20% gross margin profile. Should we be thinking about a higher gross margin profile, given the strong market backdrop? Thanks.
Thad Trent — Executive Vice President and Chief Financial Officer
Yeah. I did today — last quarter we talked about $100 million that we exited at 15%, now that’s up $170 million at a combined gross margin of 20%. So, if you think about that incremental $70 million, it’s about a 25% gross margin today. So the next piece that we’re going to walk away from is, in that range to slightly higher, but the challenges when the market comes back, that’s the margin that’s going to drop faster. We continue to maintain that. So, as we exit that, we’ll swap that out for more accretive margins. But today, yeah, it’s slightly ahead of or slightly above that 25% that I just talked about.
Toshiya Hari — Goldman Sachs — Analyst
Got it. Thank you.
Operator
Your next question comes from the line of Matt Ramsay from Cowen. Your line is open.
Josh Buchalter — Cowen — Analyst
Hey, guys. This is Josh Buchalter on behalf of Matt. Thanks for taking my question and congrats on the results. In the prepared remarks, you gave some helpful color on the unit growth. I was wondering as we think about the margins, is there anything you can give us to help us understand how much is being lifted by pricing versus the mix shifts that you previously outlined? And I asked [Phonetic] pricing, I mean, for the overall market. Thank you.
Thad Trent — Executive Vice President and Chief Financial Officer
Yeah. So, in our prepared remarks, we really kind of broke it down into favorable mix, pricing and manufacturing optimization in terms of just getting more out and increasing our capacity, reduce our manufacturing costs. That’s really the Pareto, if you think about the sequence of what is driving the gross margin improvement. And that’s what we continue to see as we go forward. We think the favorable mix as we swap out of this low margin, non-core business, we focus more on auto and industrial, which were in the higher gross margin. That’s the primary driver of gross margin expansion. And obviously the manufacturing footprint going forward will be the next piece.
Josh Buchalter — Cowen — Analyst
That’s helpful. Thank you. And then, within your silicon carbide business, the size of your design wins continue to come in very strong. I was wondering, within your broader high voltage portfolio, are you also seeing share gains in your IGBTs, which are typically being dominated by some of your peers over in Europe and Asia. Thank you.
Hassane El-Khoury — President and Chief Executive Officer
Yeah, this is Hassane. The answer is, yes, we are seeing an uptick. Obviously the LTSAs or long-term supply agreement that I mentioned focusing on silicon carbide. We do have long-term supply agreements for IGBT. Those are net increases from our baseline. Therefore, I would consider goes share gain away from some of our peers that have dominated that market. So, we do see the uptick in both in our LTSAs, so you can think about it as ramping as well over the next few years into those LTSAs.
Josh Buchalter — Cowen — Analyst
Thanks, guys. Congrats again.
Operator
Your next question comes from the line of Harsh Kumar from Piper Sandler. Your line is open.
Harsh Kumar — Piper Sandler — Analyst
Hey, guys. First of all, congratulations on a very stunning turnaround. Hassane, you’ve gotten pretty deep into the silicon carbide market making the acquisition of GTAT. I was curious that now the emphasis is on silicon carbide on for, call it, six to nine months to a year. Have there been any surprises, whether good ones or bad ones, I’d be curious about your color on it.
Hassane El-Khoury — President and Chief Executive Officer
Look, there have been surprises. I would say, the surprises are on the positive side. If you recall, back in my first earnings, I was very bullish on the company’s capabilities on silicon carbide, which I call it a favorable surprise walking in the door. That remains, and I would say the positive surprises, number one, our capabilities into quickly getting to the 200 millimeter with the GTAT acquisition, closing the GTAT acquisition and solidifying our baseline as a full on silicon carbide provider to our customers. And more importantly, a very competitive road map, not just at what we’re providing today, but the customer’s reaction to our roadmap conversations that we’ve had for the next five years or so.
All of these have been very favorable that gets me very bullish about our silicon carbide. And that’s the reason, in all honesty, our strategy is to double down on it both from a technology development side and you heard me talk about the aggressive ramp that we’re doing in 2022 in order to support that doubling every year of our silicon carbide revenue starting with quadrupling of the GTAT capabilities exiting 2022. All of these are, I would say, positive developments. This is where our investment is coming in. And I remain very bullish on our capabilities and the outlook of our silicon carbide business.
Harsh Kumar — Piper Sandler — Analyst
Great. Thanks, Hassane. And then, as you look at some of the changes you guys have made structurally to the on business, getting in silicon carbide, getting in — just focusing on some new areas that are high growth, how should we think, not the near-term or the mid-term, but the longer-term growth rate of the company? How should we think about that as maybe industry growth rate plus X percentage, what would that number be?
Hassane El-Khoury — President and Chief Executive Officer
We’re talking about — you can think about it over the long-term about 2 times of the industry, given the content gains that we’re getting, but also being over the next few years moving more and more towards the mega-trends that are driving the content, like EVs and ADAS. All of these are going to drive our 2 times market growth over the longer-term as we exit some of those businesses that we — that Thad just talked about. But more importantly, it’s not just the EV, there is a lot more also investment in content growth in the alternative energy business where I talked about, we are seeing 50% growth in ’22, that’s going to remain over a multi-year period.
All of those are net revenue increases for us because they’re new markets. So that’s going to keep fueling that growth. So you can see in both on the automotive and industrial and, of course, the cloud business where that investment is going to keep going. So all of these are going to fuel our growth because of our exposure to those mega trends.
Harsh Kumar — Piper Sandler — Analyst
Thanks, guys. Congratulations again.
Operator
Your next question comes from the line of Vijay Rakesh from Mizuho. Your line is open.
Vijay Rakesh — Mizuho — Analyst
Yeah. Hi, Hassane. You said great quarter and guidance — sorry, margins. Just a quick question on the silicon carbide side. I know you mentioned $2.6 billion in basically committed revenue. Just wondering how that should — what should be the contribution for 2022 from that? I know you said $1 billion a year, but is that what would be incremental to 2022? And if you can give some margin profile on that business as well. Thanks.
Hassane El-Khoury — President and Chief Executive Officer
Yeah. So, we’re — I’m not guiding the silicon carbide in ’22 other than saying it’s going to more than double from the 2021 as we ramp the existing customers we have in 2021, plus layering on top of that the LTSAs that start in 2022 and go through 2024. So we have a multi-year visibility on our silicon carbide LTSAs that will get us to exiting ’23 with the $1 billion run rate.
That foundation is ramping. We have started ramping. We will be ramping heavily in the second half of ’22 and that’s for the full year. It will be more than 2 times what it was in 2021. For margin profile, obviously that margin profile, as we ramp into our capex expansion, is going to be accretive. Today, obviously there is the ramp up cost. And I just want to make sure that you guys understand our margin profile and our margin guide is fully loaded, meaning it includes all of our start-up costs for silicon carbide. So that gives you kind of the accretive nature of our silicon carbide over a long time.
Thad Trent — Executive Vice President and Chief Financial Officer
Yeah. Just to be clear, so in the short-term, silicon carbide ramp is dilutive to margins because we have the start-up costs. But over the long-term, it is accretive to our corporate average.
Vijay Rakesh — Mizuho — Analyst
Got it. And just on the GTAT side, obviously very good to see you guys are pivoting to that. Obviously EV and silicon carbide are huge markets. And you’re quadrupling the capacity there. But can you give us some color on how that translates, the quadrupling of silicon carbide capacity, how that translates to your silicon carbide wafer capacity or how much of your revenue will be addressed internally with that quadrupling? Thanks. That’s it.
Hassane El-Khoury — President and Chief Executive Officer
Yeah. Our intent to have a majority of our demand supported by our internal capability. Obviously we are also partnered — we have outside sources that we are able to flex capacity during bumps in ramp. But if you think about the quadrupling of our output from GTAT by the end of ’22, you can think about it as putting that infrastructure for the supply over the next few years. I talked about more than doubling in ’22. We’re going to double again from that by — in ’23. As I mentioned in my prepared remarks this quarter and last quarter, that’s what’s going to be supported by the GTAT. But today, we do have still a mix, but as we ramp up the GTAT capability and really the capacity expansion I talked about is moving more and more of our substrate internal.
Vijay Rakesh — Mizuho — Analyst
Got it. Thank you.
Operator
Your next question comes from the line of Chris Caso from Raymond James. Your line is open.
Chris Caso — Raymond James — Analyst
Yes. Thank you. Good morning. Just a question on pricing and what’s been happening there. And I guess there’s two elements of pricing, the ASP increases because of the mix shift and then pricing on individual products. Can you speak about how much of a tailwind that’s been and where you see that’s going as you go into 2022?
Hassane El-Khoury — President and Chief Executive Officer
Yeah. So, if you look at — 2022 is going to be majority of a mix shift. Most of the price or cost increases that we are incurring, we are absorbing through yield improvement or operational efficiencies. So that’s going to be minimal. But the primary driver is going to be a mix shift based on really the new baseline that we’ve achieved exiting Q4. That new mix shift is going to keep and maintain the margin profile that we have on our product. And of course, it’s going to keep sustaining based on that mix shift we are going to be shipping, given the profile we know already in 2022 being fully booked. So, that on the gross margin, the price-to-value discrepancies we have seen a couple of points I will make. In the strategic markets that is sustainable. That’s a new — that’s the value of our products that we have in the baseline today.
The only, I guess, pricing actions that will not be sustainable is in that non-core business that Thad talked about that we will be exiting as the supply comes online from some of our peers. We’re not going to chase that price down. Today, it’s more favorable than it has been historically, still dilutive, but more favorable. But we don’t plan on maintaining that business. We will be exiting that. So, that price — that portion of that business where price, I don’t see that as being sustainable, is not going to be a drag on margin because we plan on exiting. And that’s all part of the guide that Thad talked about. Everything that remains with our profile and our mix shift is what I would call sustainable profile. And that’s where we expect our forward-looking mix to be.
Chris Caso — Raymond James — Analyst
Got it. Helpful. Thank you. So, for a follow-up question, if you could give us some numbers around the Belgium fab sale, what’s the cost and margin impact on that over time? And when do some of those benefits start layering in?
Thad Trent — Executive Vice President and Chief Financial Officer
Yeah. So we won’t — this is Thad. We won’t see the benefit until we fully exit the fab. So, as I have said, it will take one to three years. When we’re totally out of that fab, you can think about $25 million of annualized fixed cost coming off the company. In the short-term, when the buyer takes over that fab, we’ll basically be paying the equivalent cost of what we have today. But as we exit, you’ll see a benefit over that timeframe — over that time period.
Chris Caso — Raymond James — Analyst
Got it. Thank you.
Operator
Your next question comes from the line of John Pitzer from Credit Suisse. Your line is open.
John Pitzer — Credit Suisse — Analyst
Yeah. Good morning, guys. Thanks for letting me ask the questions. Congratulations on the solid results. Thad, just going back to channel inventory, you said it’s back to six to eight weeks after kind of a pop on linearity at the end of the fourth quarter. Can you help us understand what’s the normalized level that you guys are thinking about and how long it might take to get back to that normalized level?
Thad Trent — Executive Vice President and Chief Financial Officer
Yeah. So, today, we think about normalized level has kind of been in that six to seven-week range, given the supply constraints. As you know, we’re holding inventory on our balance sheet rather than shipping into the channel. We’re making sure that inventory is going to our strategic customers and we’re allocating it appropriately, whether it’s through the channel or whether it’s direct. By holding that inventory, we can control where it goes. So, in the short-term, I think we popped up to 7.3% from 6.8%. I think that’s kind of the normal range of what we’re going to be looking at probably for the remainder of this year. I think when you look further out there, we’re probably looking something around 10 weeks, plus or minus, I think is what we will be doing. I mean, obviously we’ve got to see where this market kind of shakes out and when we would do that. But I think for the foreseeable future, it’s six to seven weeks.
John Pitzer — Credit Suisse — Analyst
Got it. And then, Thad, I also thought I heard you say that unit volumes drove most of the sequential growth in the December quarter. One, is that true? And if it is, I’m just kind of curious if you can help us walk through kind of the incremental margin leverage and what drove that cyclically, because by my math, the exiting of the businesses only gave you about 70 bps. It sounds like most of it was unit driven. I know that utilization was up. Can you just help me kind of square that circle a little bit?
Thad Trent — Executive Vice President and Chief Financial Officer
Yeah. So, we — revenue was up 6%, units were up 5.7%, you’re right. So, the top end revenue came from additional units being shipped primarily and then obviously a mix shift in the higher margins. So, when you think about the gross margin improvement sequentially, it is more shipped into the — more favorable shift into the strategic markets. We did get operational efficiencies, which is reducing our manufacturing cost as well. And then as I said, there was a slight pricing increase as well as that we’re seeing kind of in the market as we’re passing on additional cost to our customers that we’ve been seeing.
Hassane El-Khoury — President and Chief Executive Officer
John, you can think about it, the auto and industrial where — that was the recipient of the mix shift that we have from the non-core, the business that we exited, that also drives just a higher ASP also just because of the market mix, and that’s why we favor those markets from a strategy perspective. So, it’s the unit at a higher ASP.
John Pitzer — Credit Suisse — Analyst
That’s helpful. And then, if I could just sneak one in on the silicon carbide market. When you talk about longer-term, this being accretive to your model, I’m just kind of curious how you are thinking about kind of the global capacity for silicon carbide wafers versus kind of the incremental value add that your IP can bring to bear. To what extent are you going to be sort of a prisoner to global supply demand where we have to figure out kind of a capex model? And to what extent are you not going to be prisoner to that because you bring something unique to the table?
Hassane El-Khoury — President and Chief Executive Officer
Yeah. Look, we — I have always said that nobody wins because you have material. Nobody wins because you have supply assurance, which makes everybody comfortable and competitive advantages. But what you win is the efficiency of your products. That’s how customers look at it. Nobody is going to take an inferior product for a flagship EV that they’re ramping just because you have supply. But they will select the supplier, which they have selected us because of our product performance, our roadmap and they will get more comfortable and more bullish just like I am when we have the supply assurance to support their ramp. That’s what’s going to be kind of the landscape moving forward. So, having our supply and assurance of supply and really controlling our fate with the substrate through the GTAT acquisition that we closed gives us that baseline that we are able to ramp from, but we remain winning based on efficiency of our products and the aggressiveness of our roadmap.
John Pitzer — Credit Suisse — Analyst
Thanks, guys.
Operator
Your next question comes from the line of Christopher Rolland from Susquehanna. Your line is open.
Christopher Rolland — Susquehanna — Analyst
Thanks, guys. Congrats and congrats on that gross margin guide in particular. I guess, my first question for either of you guys. The LTSAs, I think I missed maybe some of the details there. But if you could describe kind of what percentage of revenue falls under LTSAs today? And then, looking out to 2025, I mean, we know what you guys did with LTSAs at Cypress. But what are your plans for — what percentage of revenue by, call it, 2025 might be under LTSA?
Hassane El-Khoury — President and Chief Executive Officer
Yeah. Look, I’m not giving percent covered in LTSA. I can tell you, in 2022, we’re sold out — we’re fully booked. Anything incremental we get is going to come from efficiencies that we get through the year in units that we’re able to ship. So, 2022 kind of — that’s how you can think about it. 2023, our LTSAs that I keep referring to extend through 2024. Our focus on LTSA is on strategic. And obviously, there is always that the net loss that we are talking about, the 10% to 15% that we are — obviously, that’s not under LTSA. We’re going to be replacing that with an aggressive new product ramp. So, I’m not talking about percent under LTSAs, but I can tell you, the visibility is higher than it’s ever been in the company. And it doesn’t — it extends much beyond 2022.
Christopher Rolland — Susquehanna — Analyst
Thanks, Hassane. And then, for my second question, the exited business that you guys did, I think you said $170 million at 20% gross margin. I was wondering how much of that might be left. And then, secondly, if a downturn were to occur and you guys needed to still fill your fabs, could you reengage successfully with those accounts or do you think that ship has sailed?
Hassane El-Khoury — President and Chief Executive Officer
No. Look, I’ll answer the second part because that’s an important pillar of the strategy. The answer is, we’re not going to chase after it because think about it this way. If there is a market downturn, that business is highly dilutive. I mean, you can think about the 15% to 25% margin today, that’s in a favorable pricing environment. So, you can imagine, in a down market, that revenue or that margin is way worse than it is now at that 20%. So, the answer is, we’re not going to chase after it. Strategically we are walking away from it regardless of what the market does. What we are doing in the meantime to make sure that our — is our manufacturing optimization is, as we’re exiting those, we are resizing our manufacturing footprint in order to prevent under-loading that historically has plagued the company. So, that’s going to give us that sustainable margin that we are delivering.
So, even in a downturn, we’re not going to get the drag from gross margin because of mix. We’re going to be in a favorable mix regardless of what the market does from a margin perspective. And we are working on our manufacturing optimization, like Thad talked about with the Belgium fab and then ramping up the East Fishkill where we have scaled fab through our fab lighter strategy in order to sustain that and prevent under-loading. So, we are not going to run after bad business no matter what the market does. That’s strategically our direction.
Christopher Rolland — Susquehanna — Analyst
Thanks, Hassane.
Operator
Your next question comes from the line of William Stein from Truist Securities. Your line is open.
William Stein — Truist Securities — Analyst
Hi. Thanks for taking my question. I’ll add my congratulations on the great results and outlook. I’m wondering if you can dig a little bit more into the LTSAs just asked about. But specifically, do these look like sort of committed volume where specific orders are allocated as the demand becomes more clear in other words, sort of just volume commitments, or are these more like hard purchase orders placed in sort of a blanket fashion.
Hassane El-Khoury — President and Chief Executive Officer
So — I’ll answer if I understood the question correctly. The LTSAs are committed to both volume and pricing that gives us the visibility and they’re committed on mix. So, it’s not a blanket LTSA of some revenue number. It is associated to a mix because that’s what we’re using in order to decide on where to expand our capacity, which is purely on our strategic products. What we don’t want is just the blanket capacity expansion in good or bad days. So, we are focusing our capacity expansion on where the LTSAs are.
And again, the LTSAs goes down in volume, price and mix. It’s the best visibility we have. And like I said, extend over a multi-year period because capacity we are putting in today is really impacting ’23 and ’24, ’22 is kind of — it is what it is. And that’s why I say it’s fully committed year as far as mix and volume, plus some of the efficiencies that I talked about will get throughout the year.
William Stein — Truist Securities — Analyst
That helps. And then, just a clarification on that last point as well. It sounds like lead times are beyond 52 weeks at this point, is that correct? Have they extended further during the quarter? And maybe a similar question around backlog, has that grown in the last 90 days?
Thad Trent — Executive Vice President and Chief Financial Officer
Yeah. Well, it’s Thad. The lead times are very consistent. They’re right around five weeks plus or minus, consistent with what we’ve seen in the past couple of quarters, so no major change on that. Backlog continues to be very strong. It’s outpacing supply. This is purely a supply game right now in terms of just catching up with demand.
Hassane El-Khoury — President and Chief Executive Officer
And just to clarify my comment that anything now is for 2023 is more on the capex, not on really supply and demand perspective, meaning installing capex through ’22 will really impact your capacity expansion in ’23.
William Stein — Truist Securities — Analyst
Thank you.
Operator
Your next question comes from the line of Harlan Sur from JPMorgan. Your line is open.
Harlan Sur — JPMorgan — Analyst
Good morning. Congratulations on the solid results and execution. Good to see the sale of the Belgium fab. I know it’s going to take a few years to see the benefits of this. I believe that you guys had targeted total fixed cost reductions from smaller fab exits to drive about $125 million, $150 million of fixed costs over the next few years. Is most of this fixed cost reduction still ahead of the team? And have you been able to actually find more opportunities for fixed cost reductions?
Thad Trent — Executive Vice President and Chief Financial Officer
Yeah. Harlan, it’s Thad. That number is still the targeted number that we’re going after. As I’ve said earlier, Belgium is roughly about $25 million of that fixed cost. So, you can see we’ve got a lot ahead of us. We’re not done with the fab divestitures. We laid out that plan — that fab lighter plan at Analyst Day and we’re still executing to that plan.
Harlan Sur — JPMorgan — Analyst
Great. Thanks for that. And then, Intelligent Sensing, on a 4Q and full year basis, I mean, very strong year-over-year growth, but still quite a bit lower than your auto and industrial segments combined. In fact, I think ISG growth was almost 2 times lower versus PSG and your auto and industrial segments combined in Q4. Yet, we know the demand in content expansion is just as strong as your power business. So, you outsourced a big part of ISG. What’s the visibility on when capacity situation starts to improve meaningfully from your foundry partners and is this motivating the team to actually accelerate its in-sourcing efforts here?
Hassane El-Khoury — President and Chief Executive Officer
Look, we are — so you are absolutely right. It’s not — this is purely a supply-constrained environment for the sensing, given the higher percent of external manufacturing. So we remain focused on working with our outside foundry partners. We were able to get more supply in the fourth quarter. That’s what drove kind of the results, and we are working continuously in order to secure more and more supply for 2022. So, that’s kind of where that business comes in, you are right, it’s not a demand, it’s more of a supply. And our focus about the mix, internal and external remains on track.
Harlan Sur — JPMorgan — Analyst
Thank you.
Operator
Your next question comes from the line of Tore Svanberg from Stifel. Your line is open.
Tore Svanberg — Stifel — Analyst
Yes. Thank you and congratulations on the record results. Could you elaborate a little bit on the inventory in the channel? I think you said it went up to 7.3 weeks, but I think you also said in this quarter, it came back down. So, is that mainly because sell-through actually got better again this quarter or did you take an opportunity to perhaps hold a little bit more inventory? Just wanted some clarification there, please.
Thad Trent — Executive Vice President and Chief Financial Officer
Yeah. The inventory in the channel went up to 7.3 weeks from 6.8 weeks in Q3. It was purely a result of timing of shipments late in the quarter in Q4. Sell-through in the channel remains very robust. It’s not necessarily that it has cranked up here in Q1. It was just purely a timing of delivery and when we got supply and be able to get into the channel. So, it’s already returned back into that 6.8 weeks level. And as I was saying earlier, we think, going forward, we’ll maintain kind of six to seven weeks range for the foreseeable future.
Tore Svanberg — Stifel — Analyst
Understood. Thank you for that. And the $650 million run rate for capex, how much of that is kind of going to fund regular capex versus the additional investments you’re having now in 300-millimeter and the silicon carbon capacity?
Thad Trent — Executive Vice President and Chief Financial Officer
The vast majority of it’s going to silicon carbide and to capex for East Fishkill, the 300-millimeter fab build-out. There is — the rest of it, I would consider, more maintenance capex.
Tore Svanberg — Stifel — Analyst
Very helpful. Thanks again.
Operator
Your next question comes from the line of Raji Gill from Needham & Company. Your line is open.
Rajvindra Gill — Needham & Company — Analyst
Yes. Thank you and congrats as well. You might have touched upon this before. But if I look at the percentage of revenue coming from auto and industrial, it’s now 63%. So, ex those markets, the other markets represent 37% of sales. Last year, the other markets were representing about 42%. So, your non kind of core markets are going down from 42% to 37%, 38% as you ramp auto industrial. When we’re thinking about this 48% to 50% gross margin long-term, can you give us a sense, number one, in terms of what percentage of sales do we think auto-industrial represent over time? And any sense in terms of the spread of the gross margins between auto and industrial against the other segments?
Hassane El-Khoury — President and Chief Executive Officer
Yeah. We stated in our Analyst Day that we expect over the next five years auto-industrial to become about 75% of our total revenue. So, we’re at 63%. So that gives you kind of our trajectory, because it’s also tied to our margin expansion as we move forward towards that 75%. Obviously the mix or margin profile is more favorable from these markets because that’s part of the trajectory that we have getting to that 48% to 50% is by being more and more exposed to the markets. But more importantly, it’s the new products that we are ramping that are better margin profile. So it’s a mix shift for our products, new products versus, call it, the run rate products and a mix shift to end markets, auto and industrial, becoming 75% at the expense of other markets that historically have had lower margin profile. So net-net, you get the margin expansion and the growth that we talked about.
Now, I just want to highlight one thing. In the other bucket, other than auto-industrial, we do have a growth segment with favorable margin and that’s our cloud and 5G power play for that market. That market, we talked about, it’s growing at 11% in our Analyst Day. So we see that also as a favorable mix from both product and market that drive an expansion of margin beyond where we are today. So these are kind of the three big components you can think about driving the growth for the company moving forward and the remaining margin expansion that Thad talked about.
Thad Trent — Executive Vice President and Chief Financial Officer
Yeah. Raji, just let me expand on that a little bit as well. The 37% has got some very favorable gross margin in there. It’s not like it’s all low gross margin. So, as we fast forward and we get 75% of our business in auto and industrial, the other 25% is other, it’s still favorable margin, right. It’s not low margin business. That’s the part that we’re exiting. But Hassane is right. As we flex more into auto-industrial, that will be more accretive. And obviously the 5G will be accretive as well, but there is good high gross margin in our other bucket as well.
Rajvindra Gill — Needham & Company — Analyst
That’s helpful. And to my follow-up, Thad, your shift to a fab lighter manufacturing strategy is underway. You had mentioned in the past that you want to maintain your internal manufacturing footprint around 65% and you’ll achieve that through a lighter footprint by exiting smaller, subscale facilities and moving to — or expanding larger ones. With your new 48% to 50% gross margin target, how do we think about that component of the internal versus external manufacturing capacity?
Thad Trent — Executive Vice President and Chief Financial Officer
Yeah. So, today, we — internally we manufacture roughly 65% of our own product. As we fast forward, we bring on East Fishkill, the 300-millimeter fab, we’ve said that we have the capabilities of expanding capacity by 1.3 times what it was today. Now, we have the option there as we add capacity and add capex to be able to support that. But as we look further out, that model doesn’t change. We still believe we will manufacture 65% of our own product in-house because we will get a cost benefit of it. It’s really just exiting those subscale fabs, moving it into more efficient fabs. And obviously, the 300-millimeter fab is a component of that.
Rajvindra Gill — Needham & Company — Analyst
Alright. Great. Congrats again.
Thad Trent — Executive Vice President and Chief Financial Officer
Thanks, Raji.
Operator
This brings us to the end of our question-and-answer session. I turn the call back over to Hassane El-Khoury, President and CEO, for some closing remarks.
Hassane El-Khoury — President and Chief Executive Officer
Thank you all for joining us today. I once again thank our worldwide teams for their hard work in accelerating our transformation and driving outstanding results over the last year. With the transformation of our business, we have built a strong engine to power our growth for many years to come. We have established leadership in the fastest-growing semiconductor markets such as vehicle electrification and ADAS and we are enabling disruption in energy infrastructure and factory automation. We are driving growth while accelerating profitability and rapidly expanding margins. We expect to sustain this momentum with the ongoing transformational changes to our cost structure and the impending ramp of our EV business. Thank you.
Operator
[Operator Closing Remarks]