Power Semiconductors Suppliers & Manufacturers

Alpha and Omega Semiconductor Limited (AOS) is a designer, developer and global supplier of a broad range of power semiconductors, including Power MOSFET, IGBT, IPM and Power IC products. The company integrates discrete and IC semiconductor process technology, product design, and advanced packaging know-how to deliver high-performance power management solutions. AOS is publicly traded on NASDAQ under the ticker symbol AOSL.

Elmos Semiconductor SE is a German semiconductor manufacturer specializing in automotive mixed-signal ICs. The company develops and produces motor control, interface, sensor, and power management integrated circuits for automotive and industrial applications. Elmos operates as a fabless-plus manufacturer with its own wafer fab and test facilities in Germany.

Infineon's roots run through the entire history of European semiconductors: it began as the semiconductor division of Siemens, was spun off as an independent company in 1999, and is now the world's leading supplier of automotive semiconductors — the chips that manage everything from engine control to airbags to EV power trains. On average, a modern car contains more than a hundred Infineon chips. The company's technical edge is power: Infineon is the global leader in power semiconductors — the devices that switch and convert electrical power — including IGBTs and silicon carbide (SiC) modules that are essential to electric vehicles, solar inverters, wind turbines, and data center power supplies. It also makes the security chips in passports and payment cards, and radar and MEMS sensors for cars and consumer devices. With about 58,000 employees and annual revenue near €16 billion, Infineon has ridden the EV and renewable energy booms to record results, and its new SiC factories in Malaysia and Austria are among the largest power semiconductor investments in Europe. For the auto industry, Infineon is a critical dependency — the kind of supplier whose chips are designed into platforms years before production, and whose capacity constraints can ripple through the entire car market.

L&T Semiconductor Technologies (LTSCT) is a fabless semiconductor company designing analog, mixed-signal, power management, and RF solutions for energy, industrial, and mobility markets. Its portfolio includes motor controllers, SiC power devices, USB-C PD controllers, and vision SoCs. The company serves applications such as solar inverters, smart meters, data centers, and electric vehicle traction inverters.

Magnachip Semiconductor Corporation is a designer and manufacturer of analog and mixed-signal semiconductor platform solutions. The company offers power solutions including MOSFETs, IGBTs, silicon carbide devices, power ICs, and LED/OLED drivers for automotive, industrial, and consumer applications. Headquartered in the United States, Magnachip serves global markets with a focus on power efficiency and sustainable technologies.

Navitas Semiconductor is a fabless manufacturer of gallium nitride (GaN) and silicon carbide (SiC) power semiconductors. The company designs and supplies power ICs and discrete devices for fast charging, data centers, electric vehicles, and renewable energy applications. Its products enable higher efficiency and smaller form factors compared to traditional silicon-based power solutions.

Fairchild Semiconductor Corporation was a leading American semiconductor manufacturer, acquired by ON Semiconductor (onsemi). The company specialized in power management, discrete power devices, and signal conditioning products. Its product portfolio included MOSFETs, IGBTs, power modules, and silicon carbide solutions.

onsemi (Semiconductor Components Industries, LLC) is a leading American semiconductor manufacturer specializing in innovative solutions for automotive and industrial applications. The company designs and produces power management, analog, sensors, and connectivity products, including MOSFETs, IGBTs, SiC modules, and gate drivers. Headquartered in Scottsdale, Arizona, onsemi operates manufacturing facilities and serves customers worldwide.

STMicroelectronics is Europe's answer to the semiconductor giants of Asia and America — and it is literally a marriage of two nations: created in 1987 by the merger of Italy's SGS Microelettronica and France's Thomson Semiconducteurs, with the two governments as anchor shareholders. The 'ST' in its name stands for the two founding companies, and its dual headquarters in Geneva reflects that cross-border DNA. ST's strength is in chips for the physical world rather than pure computing: it is a global leader in microcontrollers (its STM32 family is the industry's most popular line of embedded processors, used in everything from factory robots to drones), power semiconductors (silicon carbide and GaN for electric vehicles), and sensors (the accelerometers and gyroscopes inside smartphones, plus MEMS microphones). Its automotive business supplies the silicon carbide modules that boost EV range and efficiency — a business that has boomed with the EV revolution. With about 50,000 employees and annual revenue near US$17 billion, ST operates massive wafer fabs in France, Italy, and Singapore, plus assembly plants in China, Malaysia, and the Philippines. For the European auto industry, ST is the indispensable local chip supplier — the company whose microcontrollers and power devices are designed into the continent's cars, and whose capacity has become a matter of industrial policy.

Every CNC machine tool, every semiconductor lithography stage, every robotic arm owes a debt to THK: the company invented the LM Guide in 1972, the linear motion guide that replaced sliding friction with rolling elements and made precise, high-speed linear movement possible. Before that invention, moving a machine axis smoothly and accurately was slow, expensive, and maintenance-heavy. THK's bet on a product category it basically created paid off: it remains the global leader in linear motion systems, with a dominant share of the LM guide market. Its components move the stages of lithography machines, the axes of machine tools, the carriages of injection molding robots, and the gantries of large-format 3D printers — anywhere that needs nanometer-level repeatability. Based in Tokyo with about 17,000 employees and annual revenue near ¥360 billion, THK also produces ball screws, actuators, and a newer line of miniaturized guides for medical and semiconductor equipment. For machine builders, THK is often the default spec: engineers design around its catalogs before competitors' parts are even considered.

Tower Semiconductor Ltd is an Israeli pure-play semiconductor foundry that manufactures analog and mixed-signal integrated circuits on specialty process technologies. The company operates fabrication facilities in Israel, the United States, and Japan (through its TPSCo joint venture), serving markets including automotive, aerospace and defense, imaging, and power management. It provides foundry services, design enablement, and multi-project wafer shuttles to fabless semiconductor companies worldwide.

INVENTVM Semiconductor is an Italian fabless IC company headquartered in Pavia, Italy. It designs power management and audio integrated circuits, including PiezoDrive piezo amplifier and DSP technology and UltraWear high-efficiency low-power speaker drivers for wearables. The company also offers turnkey IC services from specification to mass production.

IXYS Semiconductor GmbH is a German manufacturer of power management semiconductors, offering a comprehensive range of Power MOSFET, IGBT, bipolar, and mixed-signal IC solutions. Their products improve efficiency and reduce energy costs in a wide range of power system applications. The company is known for its IGBT, diode, thyristor, and MOSFET modules.

ON Semiconductor Corporation (onsemi) is a leading American semiconductor manufacturer specializing in intelligent power and sensing technologies. The company designs and produces a broad portfolio of discrete power devices, power management ICs, sensors, and connectivity solutions for automotive, industrial, cloud, medical, and IoT markets. Headquartered in Scottsdale, Arizona, onsemi operates its own wafer fabs and assembly/test facilities worldwide.

X-FAB is a global specialty foundry group providing analog/mixed-signal semiconductor manufacturing and design support services. It operates six wafer fabs in Malaysia, Germany, France, and the United States, serving automotive, industrial, and medical end markets. As a pure-play foundry, it offers specialty technologies including MEMS, SiC, high-voltage, and photonics.