The semiconductor industry is a crucial sector in California, home to many innovative companies creating advanced solutions for a digitally-driven era. These firms play an integral role in powering various industries, from computing and telecommunications to aviation and healthcare. Primarily, they design, produce, and supply semiconductors- key components in numerous electronic devices. Given its pivotal function, the sector is continually evolving, with firms increasingly focusing on sustainable manufacturing and smaller, more powerful chips. This demonstrates the industry's significant initiative towards innovation and sustainability, promising a bright future.


Top 24 semiconductor manufacturing companies in California

1. Lam Research

  • Website: lamresearch.com
  • Headquarters: Fremont, California, United States
  • Founded: 1980
  • Headcount: 10001+
  • Latest funding type: Ipo
  • LinkedIn

Lam Research is a global company that specializes in advanced semiconductor manufacturing solutions. They offer a range of products and services including process tools for chip manufacturing, technical training, and customer support. Their innovative technologies and expertise help drive the future of semiconductors and contribute to global advancements in various industries.


2. Applied Materials

  • Website: appliedmaterials.com
  • Headquarters: Santa Clara, California, United States
  • Founded: 1967
  • Headcount: 10001+
  • Latest funding type: Grant
  • LinkedIn

Applied Materials is a company that offers advanced manufacturing solutions to the semiconductor and display industries. They provide technologies, equipment, and services that enable the production of high-performance chips and efficient displays.


3. Microsemi Corporation

  • Website: microsemi.com
  • Headquarters: Aliso Viejo, California, United States
  • Founded: 1989
  • Headcount: 10001+
  • Latest funding type: Acquired
  • LinkedIn

Microsemi is a semiconductor and system solutions company that offers a wide range of products and services. Their offerings include circuit protection, storage ICs, timing systems, industrial imaging, and more. They specialize in providing cost-optimized, low-power mid-range FPGAs with high-speed transceivers and exceptional reliability.


4. Xilinx

  • Website: xilinx.com
  • Headquarters: San Jose, California, United States
  • Founded: 1984
  • Headcount: 1001-5000
  • Latest funding type: Acquired
  • LinkedIn

Xilinx, Inc. is a technology company that offers advanced solutions for the design and development of programmable logic devices. With a focus on innovation and cutting-edge technology, Xilinx provides a wide range of products and services that enable customers to create customized and high-performance applications.


5. Cymer

  • Website: cymer.com
  • Headquarters: San Diego, California, United States
  • Founded: 1986
  • Headcount: 1001-5000
  • Latest funding type: Acquired
  • LinkedIn

Cymer is an independently operated business within the ASML group that develops, manufactures, and services deep-ultraviolet (DUV) light sources. Their product portfolio includes excimer lasers using argon fluoride (ArF) or krypton fluoride (KrF) gases to generate light in the deep-ultraviolet spectrum, which is used in photolithography scanners to image patterns on silicon wafers.


6. Intevac

  • Website: intevac.com
  • Headquarters: Santa Clara, California, United States
  • Founded: 1991
  • Headcount: 201-500
  • Latest funding type: Ipo
  • LinkedIn

Intevac is a company that specializes in providing process equipment for the semiconductor and display industries. They offer thin film equipment, hard disk drive coating, and ballistic coating products.


7. Mattson Technology

  • Website: mattson.com
  • Headquarters: Fremont, California, United States
  • Founded: 1988
  • Headcount: 501-1000
  • Latest funding type: Ipo
  • LinkedIn

Mattson is a Silicon Valley-based company that specializes in the design, manufacturing, and global support of semiconductor wafer processing equipment. They offer innovative technologies for dry strip, plasma etch, surface treatment, ultra-selective materials removal, rapid thermal processing, and millisecond anneal, catering to the needs of the current and next-generation integrated circuits fabrication.


8. OpenFive

  • Website: openfive.com
  • Headquarters: Milpitas, California, United States
  • Founded: 2020
  • Headcount: 501-1000
  • Latest funding type: Acquired
  • LinkedIn

OpenFive is a rebranded company that offers custom silicon solutions and IP subsystems for semiconductor manufacturing. They specialize in front-end design, IP development and integration, physical design, wafer manufacturing, and 2.5D packaging. Visit their website at openfive.com for more information.


9. Harbor Electronics

Harbor Electronics, Incorporated is a leading provider of high-density assembly and out-of-the-box quality manufacturing solutions for the ATE market. They offer reliable leading-edge technology, including schematic capture, board layout, and assembly services. With a dedicated IC substrate line and a PCB fabrication line, they ensure top-notch quality and reliability. Their team follows ISO standards to protect the environment and provides end-to-end services from design to manufacturing. Harbor Electronics is recognized as the world's largest PCB supplier to the ATE market.


10. Global Communication Semiconductors,Inc.

  • Website: gcsincorp.com
  • Headquarters: Torrance, California, United States
  • Founded: 1997
  • Headcount: 51-200
  • Latest funding type: Acquired
  • LinkedIn

GCS Incorp is a manufacturing foundry that specializes in VCSEL chips & arrays, GaAs and GaN RF technologies, InP HBT wafer foundry, and optoelectronics technologies. They offer high-quality foundry services, including customer proprietary process manufacturing, processing capabilities, and testing services. GCS Incorp is committed to delivering innovative solutions to their customers.


11. Kla-tencor Limited

  • Website: kla-tencor.com
  • Headquarters: Milpitas, California, United States
  • Founded: 1976
  • Headcount: 5001-10000
  • Latest funding type: Ipo
  • LinkedIn

KLA-Tencor is a company that offers advanced technology and equipment solutions for semiconductor manufacturing. They specialize in providing precise measurements and inspection systems to improve yield and productivity in the semiconductor industry.


12. Tensorcom Inc.

  • Website: tensorcom.com
  • Headquarters: Solana Beach, California, United States
  • Founded: 2010
  • Headcount: 51-200
  • Latest funding type: Series Unknown
  • LinkedIn

Tensorcom is a fabless semiconductor company specializing in low power, gigabit speed, mmWave technology solutions. They offer products that help solve wireless challenges faced by their customers.


13. Elevate Semiconductor

Elevate Semiconductor is a company specializing in the design and manufacture of integrated circuits for semiconductor testing. They offer comprehensive solutions that test all functions of semiconductors, including high voltage chips and pin electronics. With a focus on ATE, Elevate Semiconductor provides state-of-the-art technology for various industries such as automotive, data centers, and IoT.


14. Nautech

  • Website: nautechcorp.com
  • Headquarters: San Jose, California, United States
  • Headcount: 11-50

Nautech Corporation provides integrated circuit design, manufacturing, and testing services along with intellectual property licensing for chip production.


15. ABC Assembly, Inc

ABC Assembly Inc. is an Electronic Contract Manufacturing company that offers printed circuit board (PCB) assembly services. They provide a range of services from PCB prototyping to complete system integration with a focus on quality and on-time delivery.


16. AnDAPT

  • Website: andapt.com
  • Headquarters: San Jose, California, United States
  • Founded: 2014
  • Headcount: 11-50
  • Latest funding type: Series B
  • LinkedIn

AnDAPT is a technology company specializing in power management integrated circuits (PMIC) and power solutions. They offer advanced programmable PMICs and power components for a variety of applications.


17. Harvey King Inc

  • Website: harveyking.com
  • Headquarters: San Diego, California, United States
  • Founded: 1973
  • Headcount: 11-50
  • LinkedIn

Harvey King, Inc. is a San Diego-based company established in 1994. They specialize in offering sales engineer services for semiconductor products to various industries.


18. MonolithIC 3D Inc.

Monolithic3D specializes in innovative 3D integration technology to bridge the gap between computer processing speed and memory access, enabling a 1,000 x improvement in computer systems. Its solutions target the logic and memory technologies, providing significant benefits for cost, power, and operating speed.


19. Maxim Integrated

  • Website: maximintegrated.com
  • Headquarters: San Jose, California, United States
  • Founded: 1983
  • Headcount: 5001-10000
  • Latest funding type: Acquired
  • LinkedIn

Maxim Integrated is a company that offers innovative analog and mixed-signal solutions for a wide range of applications. They provide high-performance semiconductors that enable their customers to design and manufacture advanced electronic devices.


20. Adept Chip Services Pvt Ltd

  • Website: adeptchips.com
  • Headquarters: San Jose, California, United States
  • Founded: 2011
  • Headcount: 501-1000
  • Latest funding type: Acquired
  • LinkedIn

Adept Chips is a semiconductor company that offers solutions and services in industrial automation, consumer electronics, and telecommunications. They specialize in product design and development, offering turnkey projects and testing services. With a global presence in the United States, China, and India, Adept Chips aims to lead the modern communication revolution through the power of IoT.


21. Career Technologies

  • Website: careertech-usa.com
  • Headquarters: Chatsworth, California, United States
  • Founded: 1998
  • Headcount: 10001+
  • Latest funding type: Acquired
  • LinkedIn

CareerTech is a company that provides turnkey solutions for electronics. They offer board-level assemblies, including flex and rigid flex, as well as printed board fabrication, programming/testing, ultrasonic welding, and integration into enclosure. They also provide services such as conformal coating, potting, plastic injection molding, and thermoformed solutions. They focus on exploring and developing next-generation technology while offering opportunities for advancement.


22. Roswell Biotechnologies

  • Website: roswellbiotech.com
  • Headquarters: San Diego, California, United States
  • Founded: 2015
  • Headcount: 51-200
  • Latest funding type: Series A
  • LinkedIn

Roswell Biotechnologies Inc. is a company that specializes in molecular electronics and sensor technology. Their flagship product, the Roswell Molecular Electronics Chip™, is a miniaturized sensor that is compatible with standard microchips. With this chip, they offer advanced biosensing capabilities and unlock new possibilities in molecular activity analysis. They cater to various markets, including basic research, diagnostics, genome sequencing, and environmental surveillance.


23. Ges

  • Website: geservs.com
  • Headquarters: San Jose, California, United States
  • Founded: 2005
  • Headcount: 501-1000
  • Latest funding type: Acquired
  • LinkedIn

GES is among the global leaders in automation, test and measurement. Our technical expertise combined with our high volume/low cost manufacturing in Asia make us a great partner for your engineering challenges. GES has its headquarters in San Jose, California and many satellite operations throughout Asia to support customers worldwide. GES was acquired by Kimball Electronics on 01 Oct 2018.


24. Easev Semiconductor LTD

  • Website: easev.net
  • Headquarters: Oceanside, California, United States
  • Founded: 1999
  • Headcount: 51-200
  • LinkedIn

Easev Semiconductor is a stock inventory interface in Shenzhen, China. They offer specialized ICs, power management devices, audio solutions, and memory products from top manufacturers. They sell to worldwide manufacturers and offer online payment for orders, as well as certification services.


Want to find more semiconductor manufacturing companies?


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