200mm vs 300mm Semiconductor Equipment: What Buyers Need to Know
200mm vs 300mm semiconductor equipment — market size, pricing, availability, and who uses what. Why 200mm is booming for SiC, analog, and defense.
200mm vs 300mm Semiconductor Equipment: What Buyers Need to Know
The assumption that 300mm is always better and 200mm is obsolete is wrong, and it costs people real money. Here's how the two markets actually work, who's buying what, and what you should be thinking about if you're sourcing used equipment.
The Size Basics
Wafer diameter determines how many chips you get per wafer pass. A 300mm wafer has roughly 2.3x the surface area of a 200mm wafer. All else equal, that means more chips per cycle, better economics at high volume. That's why leading-edge logic — Intel, TSMC, Samsung — moved to 300mm in the early 2000s and hasn't looked back.
But "all else equal" is doing a lot of work in that sentence. The economics only work if you're running enough volume and the process technology requires the geometries that 300mm tools enable. For a lot of applications — power devices, compound semiconductors, analog chips, MEMS, defense electronics — neither of those conditions is true.
Who Uses 200mm in 2026
The 200mm market is larger and more active than most people outside the industry expect. Here's who's running 200mm fabs:
Power semiconductors (IGBT, MOSFET, SiC). The EV transition is one of the biggest demand drivers for 200mm equipment right now. SiC (silicon carbide) for EV power electronics is almost entirely a 200mm story. Wolfspeed, ON Semiconductor, STMicroelectronics, Onsemi's Bosche JV, and most of the Asian SiC players are running on 200mm or actively building 200mm SiC capacity. The material properties of SiC make substrate growth and wafer processing genuinely different from silicon, and the volume doesn't yet justify 300mm. Don't hold your breath for widespread SiC-on-300mm before 2028–2030 at the earliest.
RF and microwave (GaAs, GaN on SiC/Si). RF chips for 5G base stations, radar, and satellite communications are predominantly 150mm and 200mm. The material systems (GaAs, GaN) don't benefit from 300mm the same way silicon does, and the process volumes are orders of magnitude lower than DRAM or logic.
Analog and mixed-signal. Mature-node analog chips — op-amps, data converters, voltage regulators, motor drivers — are the bread and butter of companies like Texas Instruments, Analog Devices, Microchip, and dozens of smaller IDMs. Most of this production runs on 200mm, and much of it is at older process nodes (0.18 micron to 1 micron) where 200mm tools are fully capable. TI famously runs more 200mm capacity than almost anyone and has no intention of converting.
Automotive. A significant portion of automotive semiconductor content — discrete transistors, power management, sensing — runs on 200mm. The reliability qualification requirements and relatively modest volumes make 200mm the right choice for many automotive chipmakers.
MEMS and sensors. Accelerometers, gyroscopes, microphones, pressure sensors — almost all MEMS production is on 150mm or 200mm. The process is fundamentally different from digital logic and the volumes don't justify 300mm infrastructure.
Defense and aerospace. Military-spec electronics are often built on older process nodes with specialized materials. Suppliers to the US defense market typically run 200mm or smaller. The CHIPS Act has increased domestic investment here.
Who Uses 300mm
Leading-edge logic. TSMC, Samsung, Intel Foundry at 5nm and below — this is 300mm territory, full stop.
DRAM. All DRAM production above commodity density runs on 300mm. Samsung, SK Hynix, Micron.
NAND flash. 300mm for all production-scale NAND.
Trailing-edge logic on 300mm. TSMC, GlobalFoundries, and UMC all run mature nodes (28nm–65nm) on 300mm at volume. The unit economics at high volume justify the infrastructure investment.
Leading trailing-edge (28nm–45nm) for specialty. This is where foundries are trying to attract volume from IoT, automotive, and consumer electronics. Still 300mm.
Price Differences: 200mm vs 300mm
For comparable process capability, 300mm tools cost more than 200mm — sometimes a little, sometimes a lot.
On the used market, the 200mm premium has compressed. Because 200mm demand has been strong (SiC, analog, defense), prices for 200mm equipment have firmed up relative to their historical discount versus 300mm. In some categories, the gap has nearly closed.
Examples from current market:
| Tool | 200mm Version | 300mm Version | |---|---|---| | AMAT Centura DPS II (etch) | $150K–$220K | $225K–$325K | | Lam 2300 Versys (etch) | N/A (Lam 2300 is 300mm) | $180K–$380K | | KLA 2135 (CD-SEM) | $80K–$150K | $120K–$200K | | ASML PAS 5500 (i-line litho) | $200K–$500K | Limited 300mm availability | | TEL Clean Track ACT (litho track) | $100K–$200K | $200K–$400K |
The spread between 200mm and 300mm has tightened to roughly 20–40% for most etch and CVD categories. For litho, 300mm tools are significantly more expensive because the installed base is smaller and most are still in production use.
Availability: Where's the Better Supply?
200mm: Good supply overall, but specific categories are tightening. SiC-compatible etch tools (Centura DPS variants, Plasma-Therm ICP systems), Epi tools, and MOCVD systems are in genuinely short supply because they're in demand. General-purpose 200mm CVD and older etch tools are more available.
300mm: Better supply in CVD and general etch. Litho is tight. ALD tools at 300mm are scarce on the secondary market.
One important point for 200mm buyers: the 200mm equipment market is more fragmented. You'll find tools from the late 1990s through mid-2000s in various states of condition. The vintage matters more than on 300mm, where most tools are relatively recent.
Upgrade Considerations
Can you convert a 200mm tool to 300mm? Almost never. The wafer handling, chambers, and hardware are fundamentally different. This is not a software configuration change — it's a different machine.
Can you run 200mm wafers on 300mm equipment? Some tools can run reduced-size wafers with carrier rings or adapters, but this is process-dependent and often not the right answer for production. Uniformity, handling, and throughput are all compromised.
Should you buy 200mm or go 300mm for a new fab? This depends entirely on your process and volume. If you're building SiC power device capacity today, 200mm is the answer. If you're building advanced logic below 45nm, 300mm is the only answer. If you're somewhere in the middle — mature node silicon at moderate volume — run the economics on both.
The capital cost difference isn't just the tools. 300mm fabs require bigger clean rooms (larger wafer carriers, bigger FOUPs, wider process bays), more automation, and higher infrastructure cost. The crossover point where 300mm economics beat 200mm is higher than many people assume, particularly for volumes below 20,000 wafer starts per month.
The SiC Situation Specifically
SiC is worth calling out because it's the biggest demand driver in 200mm equipment right now and has some unique characteristics.
SiC wafer processing is harder than silicon. The material is extremely hard (9.5 on Mohs scale), which means etch rates are slow and process kits wear faster. SiC epi deposition runs at higher temperatures than silicon epi. Ion implantation for SiC requires high-energy, high-temperature implants with post-implant annealing at 1400–1700°C.
This means not every 200mm tool is SiC-capable. For SiC-specific applications:
- Etch: ICP etch tools (Plasma-Therm Versaline, AMAT Centura ICP configs) preferred. Fluorine chemistry on SiC requires specific chamber materials.
- Epi: SiC epi growth is done in dedicated SiC epi reactors (Aixtron, Nuflare, TEL) — not standard silicon epi tools.
- Ion implant: High-energy implanters with hot chuck capability (Axcelis Optima HD, AMAT VARIAN series) required for SiC.
- Annealing: Graphite susceptor furnaces capable of 1600°C+. Not your standard silicon anneal furnace.
If you're building SiC capacity and you're trying to source equipment, you need tools specified for SiC or modified for it. Don't assume a generic 200mm silicon CVD chamber will work for your SiC process.
Frequently Asked Questions
Q: Is 200mm equipment going to become obsolete? A: No — not within any near-term planning horizon. The SiC and compound semiconductor markets are growing, not shrinking. Analog and power device fabs running 200mm have decades of production ahead. The tools won't be obsolete as long as the markets they serve are healthy.
Q: Are 200mm tools getting harder to find? A: In certain categories, yes. SiC-specific tools, Epi reactors, and compound semiconductor CVD/etch tools are genuinely tight. General-purpose 200mm silicon equipment (older etch, furnaces, older CVD) is still available. The picture varies a lot by tool type.
Q: What's the depreciation profile of 200mm versus 300mm equipment? A: 200mm has depreciated more slowly than expected over the past 3–4 years because of demand from the markets described above. Some 200mm tools have actually appreciated in value over the past 2 years (SiC epi, ICP etch). 300mm is more correlated to the overall fab cycle — it depreciated sharply in 2022–2023 and has partially recovered.
Q: If I'm buying used equipment for a new 200mm fab, what's my biggest sourcing risk? A: Litho. 200mm steppers (ASML PAS 5500, Canon FPA-5000 series, Nikon NSR) are available but getting older. Parts availability for some older models is tightening. Budget for stepper maintenance and make sure your process node doesn't require features that your vintage of tool can't provide.
Q: Can I mix 200mm and 300mm equipment in the same fab? A: Physically, yes — if you have the floor space. You'd have separate process flows for each wafer size. The usual reason to do this is if you're transitioning from 200mm to 300mm over time. Most fabs don't mix sizes in active production because the logistics are complex and the WIP tracking gets complicated.
The 200mm vs 300mm decision is fundamentally a product and economics question, not a prestige question. Build what your process and volume require. If you need help sourcing equipment for either format, Caladan Semi actively sources both — with particular depth in 200mm tools for power and compound semiconductor applications.
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Page last reviewed May 2026. Pricing and availability reflect current 2026 secondary market conditions.
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