| To: slacker711 who wrote (10426) | 9/1/2021 8:11:10 PM | | From: EvanG | | | | Revenue from STM barely grew in FY '21 ($89.3m to $94.6m) STM signed a deal with SiCrystal (Rohm) in Jan. 2020 so perhaps we are seeing the impact of that in FY '21?
STM financial quarters line up with the calendar year. So it takes some effort to try and align with Cree. Their SiC revenue has been:
| Year | Revenue | | 2018 | $100 million for the year | | 2019 | $200 million for the year | | 2020 | Missed $300 million goal for year but made $300 million run rate for Q4 | | 2021 | Estimating $550 million for year (still 2 quarters to go) |
With that revenue spread with constant quarterly growth within their financial years it looks something like this.
Cree's STM revenue can also be spread at a constant quarterly growth within the Cree financial years and then converted into a percent of STM's revenue.
- If the 2021 STM ramp is completely 2nd half, the circled portion isn't real. But that would mean the 2nd half of 2021 would be around a $800 million run rate.
- Perhaps ROHM took some share or there are yearly discounts. Up until calendar end 2020 there hadn't been a sizable shift.
- The biggest factor could be that STM is now selling its 3rd Gen which is a sizable die size shrinkage. If that is a sizeable portion of the revenue and they can maintain good pricing then the percentage could have a large drop without Cree losing share.
Here is the die size shrinkage with the 3rd Gen from STM.
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| To: EvanG who wrote (10405) | 9/9/2021 8:42:11 PM | | From: EvanG | | | | | II-VI said in a webcast today that they are working with an outsource wafer fab partner for SiC. Thought there is just X-FAB which is small with $24.8 million in SiC revenue the last 12 months. Is someone else besides X-FAB moving into the SiC foundry business? |
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| To: EvanG who wrote (10438) | 9/10/2021 7:47:26 AM | | From: slacker711 | | | | I think it's the first time I also have heard them mention using a foundry for their device strategy. I haven't heard of another SiC foundry and X-fab certainly doesn't believe that there is any real competition as they are projecting 90% SiC foundry share in '25.
Maybe an opportunity here if IIVI has any success with their fabless model.
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| To: slacker711 who wrote (10439) | 9/10/2021 9:27:27 AM | | From: slacker711 | | | | | Also, the die shrink noted by X-fab with their Gen 3 device reminds me that we are due to see Cree announce their Gen 4 devices. I believe the plan a few years ago was that they would make the transition to trench technology for this generation of devices. They are competitive with planar but my understanding is that they should see increased performance with trench but that they were working to increase the reliability. |
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| To: slacker711 who wrote (10439) | 9/12/2021 7:33:31 PM | | From: EvanG | | | | Maybe an opportunity here if IIVI has any success with their fabless model.
X-FAB and from my understanding Infineon as well, use the same fab to make Si and SiC. The high volume of Si helps lower the cost for SiC by keeping the fab highly utilized. X-FAB is using a 150mm BiCMOS fab. Infineon is using a 200mm fab.
Monolith Semiconductor, owned by Littelfuse now, is an X-FAB customer and put together the presentation linked below describing the process to get a Si fab to convert to running Si and SiC.
With X-FAB using a 150mm fab, not sure it meets II-VI goals. But it should be a matter of approaching a bunch of high volume 200mm fabs and see if one is willing to making tooling changes to work SiC as well.
nist.gov |
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| To: EvanG who wrote (10381) | 9/15/2021 2:05:46 PM | | From: slacker711 | | | | Cree says that they will be using thicker 200mm wafers as well.
unhedged.com
We
have a very strong team in place. And also, we put a very adequate capacity in place for our R&D people to do their jobs. Now 8-inch is, of course, a little more challenging in the sense that the wafers will be thicker than 6-inch wafers. So that means you have to make more crystal to get to more number of wafers out. But I would say the team has done fantastic up to this point. And the quality of the wafers that we're getting and also to following epitaxial processes, they're absolutely far with what we've seen in the 6-inch side of the business. |
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