Leading Companies in FET/MOSFET Technology Worldwide

Classified into four segments: silicon-based power MOSFET, SiC MOSFET, GaN HEMT for fast charging, and top domestic Chinese manufacturers.

1. Top Global International Manufacturers (Tier 1 for automotive, industrial & wide-bandgap products)
Infineon Technologies (Germany)

World’s largest power MOSFET supplier. Its flagship products include OptiMOS 5/6 shielded-gate SGT MOSFETs (12V–200V) for server & automotive power supplies and industry-standard CoolMOS super-junction high-voltage MOSFET (600V~1700V). The mass-produced CoolSiC trench MOSFET (Gen2) is widely adopted by new-energy vehicle OEMs including Tesla and Volkswagen for main traction inverters. Full AEC-Q101 automotive qualification and massive patent portfolio across trench, super-junction and SiC technologies.

onsemi (USA)

Key product lines: EliteMOS super-junction silicon MOS and integrated DrMOS for CPU server power supply. Third-generation EliteSiC MOSFET (650V/1200V) covers planar & trench architectures, a mainstream choice for EV on-board chargers and PV inverters with competitive cost-performance.

STMicroelectronics (Europe)

Focuses on automotive-grade discrete MOS and SiC power modules. Its trench-type SiC MOSFETs are core components for BYD and European EV inverter systems with mature 650V SiC volume production.

ROHM (Japan)

Pioneer of commercial trench SiC MOSFET with vertically integrated IDM supply chain from SiC substrate to die. Dominates high-voltage MOS markets for industrial inverters and home appliances.

Wolfspeed (USA, formerly Cree)

Global leader in SiC substrate & chip manufacturing, mass-producing 8-inch SiC wafers and 4th-gen 1200V trench SiC MOSFET, core upstream supplier for global automotive SiC industry.

Other Japanese Premier Brands

Toshiba: Leading supplier of high-frequency low-voltage MOS for consumer adapters.
Renesas: High-reliability power MOS targeting automotive and industrial control applications.

Small-Signal & General-Purpose MOS Vendors

Nexperia (Netherlands): Global No.

1 for small-signal logic MOS & signal switching FETs, standard component for consumer electronics.
Vishay (USA): Established JFET and general power MOS supplier for household and industrial equipment.

2. GaN FET Specialists for High-Speed Fast-Charging

Power Integrations (PI): Leading GaN FET solution provider for PD fast chargers and low-power SMPS.
Navitas Semiconductor: Mass-production cascode GaN MOS widely used in mobile and laptop fast-charging adapters.

3. Top Chinese Domestic MOSFET Manufacturers (Local substitution core players)

Silicon Power MOS Leaders

CR Micro: China’s top IDM MOS maker covering full voltage range (12V~1700V). Mature SGT low-voltage MOS and super-junction high-voltage MOS with in-house 8/12-inch wafer fabs, supplying automotive-grade MOS to domestic EV makers.

Silan Micro: Premium domestic SJ super-junction MOS maker; ongoing SiC wafer fabrication at Xiamen facility with volume auto-grade MOS shipments for PV and NEV markets.
NCE Power: Benchmark domestic SGT-MOS manufacturer with comprehensive mid/low-voltage product portfolio for AI power and energy storage equipment.
East Micro: Leading domestic high-voltage GreenMOS super-junction MOS vendor; 650V~1200V products serve EV chargers and industrial power supply as mainstream local alternatives to Infineon CoolMOS.

Domestic SiC MOS Key Players

Zhanchip Electronics: One of China’s first firms to mass-produce 1200V planar SiC MOSFET, pioneer of domestic 3rd-gen SiC commercialization.
Basemi & Xinyue Semiconductor: Technological breakthroughs on trench SiC MOS with gradually mass-produced automotive-grade discrete chips and power modules.
BYD Semiconductor: Self-developed SiC MOS for internal EV inverter assembly plus external component sales.

Quick Application Selection Guide

Premium automotive / high-voltage industrial (≥600V & SiC): Infineon > onsemi > ROHM > Wolfspeed > ST
Low-voltage server & consumer PSU (<200V SGT MOS): Infineon, onsemi, CR Micro, NCE Power
General small-signal MOS: Nexperia, Vishay
Cost-effective domestic replacement: CR Micro, Silan, East Micro (Si MOS); Zhanchip, Xinyue Semiconductor (SiC)