Power semiconductors and discretes (MOSFETs, GaN, SiC)

Why the concentration exists

Power semiconductors are switching transistors that perform power conversion in electronic systems. Silicon MOSFETs have long dominated this market, but gallium nitride and silicon carbide wide-bandgap devices now enable higher power density and efficiency. GaN transistors operate at higher frequencies than silicon MOSFETs, which makes them attractive for data center power supplies where hyperscalers are specifying them into next-generation power delivery architectures.[2][5][8]

The performance advantages of wide-bandgap semiconductors come from their material properties. GaN HEMTs contain an ultra-thin two-dimensional electron gas channel measuring tens of nanometers. However, performance is limited by where heat is generated and how it is removed, with device-level loss mechanisms creating structure-driven hot spots within the channel and thermal boundary resistance at layer interfaces.[8]

What the evidence shows

Who supplies it

Infineon Technologies is widely recognized as the market leader for power semiconductors, delivering a broad portfolio spanning IGBT modules, SiC MOSFET modules, IPMs, and GaN solutions. The company held a 13.5% share of the global automotive chip market in 2024, marking its fifth consecutive year of leadership. Infineon became the number one supplier in the overall microcontroller market in 2024, increasing its market share to 21.3%.[7][14]

Several suppliers compete in the GaN and SiC segments with varying degrees of supply constraint. Navitas, EPC, GaN Systems which was acquired by Infineon, and Transphorm are all supply-constrained on GaN-on-silicon product lines. First-generation SiC MOSFETs using planar technology are still adopted by STMicroelectronics, Wolfspeed, and onsemi. Bosch offers a comprehensive SiC power semiconductor portfolio including SiC power MOSFETs and power modules for the mobility industry.[2][4][6]

Key competitors challenging Infineon include ON Semiconductor, Microchip Technology, STMicroelectronics, NXP Semiconductors, Mitsubishi Electric Corporation, and Texas Instruments. Silan Microelectronics is enlarging its manufacturing capability to include SiC MOSFETs to cater to growing demand. India's Agnit Semiconductors has emerged as the country's first IDM startup dedicated to advancing GaN semiconductor technology.[1][3][14]

What it depends on, and what depends on it

Power semiconductors are manufactured on semiconductor wafers, with leading producers transitioning to larger diameters for cost efficiency. Infineon announced the development of the world's first 300mm GaN wafer technology for power electronics, enabling 2.3 times the number of chips per wafer compared to 200mm wafers. The company manufactures power semiconductors on 300-millimeter thin wafers that are 40 micrometers thick at its Villach facility.[10][12]

These devices serve as the switching elements in power conversion systems across multiple end markets. On personal computer systems, the VRM is typically made up of power MOSFET devices. A power stage in ASUS motherboards is comprised of a driver and two MOSFETs. SiC power MOSFETs and power modules are designed for inverters, on-board chargers, and DC/DC converters in automotive applications.[4][9][15]

Automotive and industrial sectors accounted for 72% of total demand for discrete power devices in 2025. While 400-volt battery electric vehicles are currently the largest consumers of SiC devices, the shift to 800-volt architecture is accelerating demand. Industrial applications such as photovoltaic inverters and high-power EV DC chargers also contribute significantly to consumption.[6][16]

Where it sits in the stack

What would break it

Lead times have extended considerably across multiple device categories. Power MOSFETs including silicon and SiC have lead times of 16 to 40 weeks as of Q1 2026, driven by EV chargers, solar inverters, and AI servers. IGBTs and SiC MOSFETs have lead times of 26 to 60 weeks as of Q1 2026, driven by renewable energy and rail traction. Power semiconductors and analog ICs have a typical 2026 lead time of 26-40 weeks, with a worsening trend driven by AI power demand.[21][22]

New entrants and capacity expansions could gradually ease constraints, though qualification cycles remain lengthy. Singapore's National Semiconductor Translation and Innovation Centre for Gallium Nitride represents a partnership involving A*STAR to advance GaN technology. onsemi and Innoscience signed a non-binding MoU to evaluate opportunities to accelerate deployment of GaN power devices, starting with 40-200V products.[1][20]

What to watch

Major capacity additions are coming online from established suppliers. Infineon inaugurated its €5 billion Smart Power Fab in Dresden on 02 July 2026, doubling its production capacity for power semiconductors and creating 1,000 direct jobs. The facility is described as the world's largest factory for intelligent power semiconductors and analog mixed-signal technologies. STMicroelectronics is building a 200mm SiC integrated manufacturing base in Catania, Italy, planning to begin production in 2026 with capacity reaching up to 15,000 wafers per week upon full production in 2033.[11][13][19]

Product development timelines indicate continued technology advancement. onsemi expects to begin sampling GaN power devices in the first half of 2026 following its MoU with Innoscience. Infineon released first customer products manufactured on 200mm silicon carbide wafers in February 2025 and is preparing high-volume production in Malaysia. Vishay launched new 1200V SiC MOSFET power modules in January 2026 targeting industrial and renewable energy applications.[17][18][20]

Related nodes

Sources

1. powerelectronicsnews.com · 2025-12-15T14:27:12
2. 773grp.com · 2026-03-27T02:19:53
3. powerelectronicsnews.com · 2024-10-31T08:14:00
4. bosch-semiconductors.com
5. powerelectronicsnews.com · 2022-09-27T18:21:36
6. powerelectronicsnews.com · 2025-05-29T13:43:00
7. hiitiosemi.com · 2026-01-15T05:59:01
8. mdpi.com · 2025-10-27T00:00:00
9. en.wikipedia.org
10. electrive.com · 12.09.2024
11. semiiphub.com · 02 July 2026
12. gsma.com
13. pluang.com · 2026-07-02
14. matrixbcg.com · 2024
15. asus.com
16. macrostream.ai · April 2026
17. knowledge-sourcing.com · February 2024
18. congruencemarketinsights.com · December 2024
19. finance.biggo.com
20. semiconductor-today.com · 3 December 2025
21. pcbaassembly.com · Q1 2026
22. globx.eu · 02 Jul 2026