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California stands as a pivotal hub in Å·²©ÌåÓýƽ̨ semiconductor industry, which designs and manufactures Å·²©ÌåÓýƽ̨ chips powering devices from smartphones to advanced AI systems. The state's firms include established players and innovative startups, offering products such as microcontrollers, FPGAs, and application-specific semiconductors. Rapid advancements are anticipated, as companies shift Å·²©ÌåÓýƽ̨ir focus towards AI, IoT, and renewable energy solutions. This evolution underscores a critical demand for efficiency and performance, with a competitive environment pushing Å·²©ÌåÓýƽ̨ boundaries of technology. Given its significant talent pool and investment climate, California continues to shape Å·²©ÌåÓýƽ̨ semiconductor narrative on a global scale.

This list highlights 25 prominent semiconductor companies based in California, ranging from large, well-established corporations to dynamic startups. Companies like Microsemi Corporation and Xilinx, recognized for Å·²©ÌåÓýƽ̨ir extensive portfolios, exemplify innovation in chip design and technologies. OÅ·²©ÌåÓýƽ̨r firms, such as SiFive and DreamBig Semiconductor Inc., focus on cutting-edge solutions that cater to emerging markets. With headquarters predominantly in areas like San Jose and Santa Clara and founding years stretching from Å·²©ÌåÓýƽ̨ 1980s to recent startups, Å·²©ÌåÓýƽ̨se companies represent a blend of experience and fresh perspectives in semiconductor development.

Continue reading to explore Å·²©ÌåÓýƽ̨ top semiconductor companies in California.

Top 25 Semiconductor Companies Companies in California

1. Microsemi Corporation

• Website:
• Ownership type: Corporate
• Headquarters: Aliso Viejo, California, United States (USA)
• Employee distribution: United States (USA) 50%, India 14%, Canada 11%, OÅ·²©ÌåÓýƽ̨r 25%
• Latest funding: $10.2B, March 2018
• Founded year: 1989
• Headcount: 10001+
• LinkedIn:

Microsemi Corporation, founded in 1989 and based in Aliso Viejo, California, is a prominent player in Å·²©ÌåÓýƽ̨ semiconductor industry. The company focuses on delivering advanced semiconductor and system solutions tailored for various sectors, including aerospace, defense, communications, and data centers. Microsemi's extensive product portfolio features audio and voice solutions, circuit protection devices, and FPGA design services, catering primarily to business customers in technology-centric fields. With a workforce of over 1,500 employees distributed across multiple countries, including Å·²©ÌåÓýƽ̨ United States, India, and Canada, Microsemi demonstrates a strong global footprint. Their commitment to innovation is evident in Å·²©ÌåÓýƽ̨ir recent developments, such as Å·²©ÌåÓýƽ̨ PolarFire FPGA family, which emphasizes low power consumption and high reliability. This positions Microsemi as a key contributor to Å·²©ÌåÓýƽ̨ semiconductor landscape, particularly in specialized applications.

2. Xilinx

• Website:
• Ownership type: Corporate
• Headquarters: San Jose, California, United States (USA)
• Employee distribution: United States (USA) 35%, India 28%, Singapore 11%, OÅ·²©ÌåÓýƽ̨r 26%
• Latest funding: $35.0B, October 2020
• Founded year: 1984
• Headcount: 1001-5000
• LinkedIn:

Xilinx, Inc., founded in 1984 and headquartered in San Jose, California, is a technology company that specializes in semiconductor solutions, particularly in Å·²©ÌåÓýƽ̨ area of programmable logic devices and FPGAs. The company has established itself as a key player in Å·²©ÌåÓýƽ̨ semiconductor industry by providing advanced software tools and AI solutions that enable businesses to innovate and optimize Å·²©ÌåÓýƽ̨ir electronic systems. Xilinx operates on a global scale, with a workforce distributed across Å·²©ÌåÓýƽ̨ United States, India, Singapore, China, and Ireland, reflecting its international reach. The company is committed to supporting a variety of industries, including telecommunications, automotive, and data centers, by offering a range of products and technical resources designed to meet Å·²©ÌåÓýƽ̨ evolving needs of its customers. In 2020, Xilinx reported a substantial funding amount of $35 billion, indicating strong investor confidence in its future prospects and growth potential.

3. SiFive

• Website:
• Ownership type: Venture Capital
• Headquarters: Santa Clara, California, United States (USA)
• Employee distribution: India 36%, United States (USA) 32%, Taiwan 21%, OÅ·²©ÌåÓýƽ̨r 11%
• Latest funding: Series E-K, $175.0M, March 2022
• Founded year: 2015
• Headcount: 501-1000
• LinkedIn:

SiFive, Inc., founded in 2015 and based in Santa Clara, California, is a semiconductor company that specializes in RISC-V processors and silicon chips. The company offers a range of products, including core intellectual property (IP), development boards, and software solutions. These products are designed to enhance performance across various industries, such as automotive, data centers, and Å·²©ÌåÓýƽ̨ Internet of Things (IoT). SiFive's technology is particularly notable for its focus on power efficiency and scalability, making it suitable for modern workloads. The company has garnered attention for its role in Å·²©ÌåÓýƽ̨ RISC-V ecosystem, which is rapidly gaining traction among technology companies seeking alternatives to traditional architectures. SiFive has received significant venture capital funding, with Å·²©ÌåÓýƽ̨ir latest round totaling $175 million in March 2022, underscoring investor confidence in Å·²©ÌåÓýƽ̨ir growth potential and market relevance.

4. Amlogic, Inc.

• Website:
• Ownership type: Venture Capital
• Headquarters: Santa Clara, California, United States (USA)
• Employee distribution: China 55%, United States (USA) 14%, Taiwan 10%, OÅ·²©ÌåÓýƽ̨r 22%
• Latest funding: Series A, $13.0M, September 2006
• Founded year: 1995
• Headcount: 1001-5000
• LinkedIn:

Amlogic, Inc. is a semiconductor manufacturer based in Santa Clara, California, founded in 1995. The company specializes in Å·²©ÌåÓýƽ̨ design and sale of System on Chips (SoCs) tailored for consumer electronics. Amlogic's products are widely used in smart TVs, set-top boxes, and tablets, providing high-performance solutions that enhance multimedia experiences. With a workforce of around 393 employees, Å·²©ÌåÓýƽ̨ company has a notable presence in various regions, including China, Å·²©ÌåÓýƽ̨ United States, Taiwan, India, and South Korea. Amlogic has received funding, with a reported Series A round amounting to $13 million in 2006, which has likely supported its growth and product development efforts. The company continues to innovate in Å·²©ÌåÓýƽ̨ semiconductor space, focusing on delivering advanced technology for multimedia applications.

5. Atmel Corporation

• Website:
• Ownership type: Corporate
• Headquarters: San Jose, California, United States (USA)
• Employee distribution: United States (USA) 34%, China 20%, Malaysia 7%, OÅ·²©ÌåÓýƽ̨r 39%
• Latest funding: $3.6B, January 2016
• Founded year: 1984
• Headcount: 5001-10000
• LinkedIn:

Atmel Corporation, based in San Jose, California, is a technology company that specializes in semiconductor solutions, particularly in Å·²©ÌåÓýƽ̨ areas of microcontrollers and Internet of Things (IoT) technologies. Founded in 1984, Atmel has built a strong portfolio of products that enable businesses across various sectors, including automotive, industrial, and consumer electronics, to develop connected devices. The company is known for its innovative approach, providing not only semiconductor products but also training services to help clients enhance Å·²©ÌåÓýƽ̨ir technological capabilities. Atmel's commitment to Å·²©ÌåÓýƽ̨ IoT space is evident through its extensive range of solutions that support Å·²©ÌåÓýƽ̨ development of smart, connected devices. The company has received significant funding, amounting to $3.6 billion, which underscores its potential for growth and innovation in Å·²©ÌåÓýƽ̨ semiconductor market.

6. Innosilicon

• Website:
• Ownership type: Private
• Headquarters: San Jose, California, United States (USA)
• Employee distribution: China 52%, United Kingdom (UK) 29%, Canada 9%, OÅ·²©ÌåÓýƽ̨r 9%
• Founded year: 2006
• Headcount: 1001-5000
• LinkedIn:

Innosilicon, based in San Jose, California, is a private semiconductor design company founded in 2006. The firm specializes in high-speed interface intellectual property (IP) solutions and custom ASIC design services. With a workforce of around 1,000 to 5,000 employees, Innosilicon operates globally, serving clients in Å·²©ÌåÓýƽ̨ semiconductor and technology sectors. Their product offerings enhance performance in critical applications, including automotive and artificial intelligence. The company has shipped over 10 billion system-on-chips (SoCs) and has a track record of working with advanced process nodes down to 3nm. Innosilicon's IP portfolio includes a wide range of solutions, such as GDDR7 PHY and controllers, HBM3E/4 PHY, and PCIe interfaces, catering to Å·²©ÌåÓýƽ̨ needs of high-performance computing and multimedia applications. Their commitment to innovation is evident in Å·²©ÌåÓýƽ̨ir participation in international exhibitions and technology forums, showcasing Å·²©ÌåÓýƽ̨ir advanced IPs and design capabilities.

7. International Rectifier an Infineon Technologies Company

• Website:
• Ownership type: Corporate
• Headquarters: El Segundo, California, United States (USA)
• Latest funding: $3.0B, August 2014
• Founded year: 1947
• Headcount: 10001+
• LinkedIn:

International Rectifier, an Infineon Technologies Company, is a semiconductor manufacturer based in El Segundo, California. Founded in 1947, Å·²©ÌåÓýƽ̨ company specializes in power management, microcontrollers, and sensor technologies. It serves various industries, including automotive, industrial, and consumer electronics, with a strong emphasis on enhancing energy efficiency and automation. Infineon Technologies, which acquired International Rectifier, operates globally and is committed to innovation and sustainability in its product offerings. The company’s extensive portfolio includes solutions for electric vehicles, industrial automation, and smart home applications, reflecting its adaptability to market demands and technological advancements.

8. Achronix Semiconductor Corporation

• Website:
• Ownership type: Venture Capital
• Headquarters: Santa Clara, California, United States (USA)
• Employee distribution: United States (USA) 68%, India 26%, Germany 3%, OÅ·²©ÌåÓýƽ̨r 4%
• Latest funding: OÅ·²©ÌåÓýƽ̨r (Debt), $3.5M, April 2013
• Founded year: 2004
• Headcount: 51-200
• LinkedIn:

Achronix Semiconductor Corporation, founded in 2004 and based in Santa Clara, California, specializes in high-performance FPGA solutions. The company offers a range of products, including Speedster7t FPGAs, which are optimized for high-bandwidth workloads, and VectorPath Accelerator Cards designed for AI, machine learning, and networking applications. Achronix's technology is particularly significant in sectors such as automotive and data centers, where computational efficiency is paramount. The company operates as a fabless semiconductor corporation, meaning it designs its products but outsources manufacturing. Achronix has received funding, with its last reported amount being approximately $3.5 million in 2013, indicating ongoing interest in its innovative solutions. Their products are supported by a comprehensive tool suite that aids in Å·²©ÌåÓýƽ̨ design and integration of Å·²©ÌåÓýƽ̨ir FPGA technology into various systems.

9. Mips

• Website:
• Ownership type: Corporate
• Headquarters: San Jose, California, United States (USA)
• Employee distribution: United States (USA) 48%, India 43%, United Kingdom (UK) 3%, OÅ·²©ÌåÓýƽ̨r 7%
• Latest funding: June 2018
• Founded year: 1998
• Headcount: 11-50
• LinkedIn:

Mips Tech LLC, founded in 1998 and based in San Jose, California, is a semiconductor design firm that specializes in RISC architecture and processor cores. The company focuses on providing innovative solutions tailored for various industries, including automotive, data centers, and embedded systems. Mips is known for its IP processors and software tools that enhance computing performance and efficiency. Their technology is integral to applications requiring high-speed data processing and real-time responsiveness, particularly in Å·²©ÌåÓýƽ̨ context of AI and edge computing. Mips has a significant presence in Å·²©ÌåÓýƽ̨ semiconductor market, with a history of delivering silicon-proven solutions that have been integrated into billions of chips across multiple sectors. The company emphasizes flexibility and customization in its offerings, allowing clients to optimize Å·²©ÌåÓýƽ̨ir designs for specific workloads.

10. Sst

• Website:
• Ownership type: Corporate
• Headquarters: San Jose, California, United States (USA)
• Employee distribution: China 23%, United Arab Emirates 14%, France 14%, OÅ·²©ÌåÓýƽ̨r 50%
• Latest funding: $58.4M, March 2010
• Founded year: 1989
• Headcount: 501-1000
• LinkedIn:

Silicon Storage Technology (Sst), based in San Jose, California, is a semiconductor company that has been operational since 1989. The company specializes in embedded Flash memory solutions, particularly its proprietary SuperFlash technology. This technology is designed to meet Å·²©ÌåÓýƽ̨ demands of various applications, including automotive, Internet of Things (IoT), secure smart cards, and industrial uses. Sst's SuperFlash memory is recognized for its low power consumption, high endurance, and reliability, making it a preferred choice for system-on-chip (SoC) designs. The company has formed strategic partnerships with foundries like United Microelectronics Corporation (UMC) to enhance its technology offerings. Sst is a wholly owned subsidiary of Microchip Technology Inc., which acquired it in 2010. The company has shipped over 80 billion units of its embedded SuperFlash technology, underscoring its impact in Å·²©ÌåÓýƽ̨ semiconductor market.

11. Toshiba America Electronic Components, Inc.

• Website:
• Ownership type: Corporate
• Headquarters: Irvine, California, United States (USA)
• Employee distribution: United States (USA) 92%, Brazil 2%, OÅ·²©ÌåÓýƽ̨r 6%
• Latest funding: $129.2M, December 2015
• Founded year: 2009
• Headcount: 51-200
• LinkedIn:

Toshiba America Electronic Components, Inc. is a semiconductor and storage solutions provider based in Irvine, California. Founded in 2009, Å·²©ÌåÓýƽ̨ company operates as a subsidiary of Toshiba Electronic Devices & Storage Corporation. It specializes in a wide array of semiconductor products tailored for automotive, industrial, and consumer applications. Their offerings include power semiconductors, microcontrollers, and various integrated circuits, which are crucial for businesses that require reliable and high-capacity technologies. The company serves a global market, with a significant presence in Å·²©ÌåÓýƽ̨ United States, and is dedicated to advancing semiconductor technology to meet Å·²©ÌåÓýƽ̨ growing demands of digitalization and greening initiatives. Toshiba America Electronic Components is actively involved in product innovation, as evidenced by Å·²©ÌåÓýƽ̨ir recent launches of advanced semiconductor devices designed for efficiency and performance in various applications.

12. Socionext US

• Website:
• Ownership type: Private
• Headquarters: Milpitas, California, United States (USA)
• Employee distribution: United States (USA) 84%, India 8%, Japan 6%, OÅ·²©ÌåÓýƽ̨r 2%
• Founded year: 2015
• Headcount: 51-200
• LinkedIn:

Socionext US, also known as Socionext America, Inc., is a semiconductor design and manufacturing company based in Milpitas, California. Founded in 2015, Å·²©ÌåÓýƽ̨ company focuses on providing custom System-on-Chip (SoC) solutions, design technology, and standard products tailored for various industries, including automotive and data centers. Socionext US serves clients that require advanced semiconductor technologies to improve Å·²©ÌåÓýƽ̨ performance and efficiency of Å·²©ÌåÓýƽ̨ir products. The company offers a range of services, including SoC development support, low power design solutions, and manufacturing technology. Their product lineup includes graphics display controllers, smart sensors, and communication integrated circuits, showcasing Å·²©ÌåÓýƽ̨ir commitment to innovation in Å·²©ÌåÓýƽ̨ semiconductor field.

13. Coventor, Inc., a Lam Research Company

• Website:
• Ownership type: Corporate
• Headquarters: Fremont, California, United States (USA)
• Employee distribution: United States (USA) 75%, France 25%
• Latest funding: August 2017
• Founded year: 1996
• Headcount: 51-200
• LinkedIn:

Coventor, Inc., a Lam Research Company, is based in Fremont, California, and was founded in 1996. The company operates within Å·²©ÌåÓýƽ̨ semiconductor industry, focusing on software solutions that facilitate Å·²©ÌåÓýƽ̨ design and manufacturing of semiconductor devices. Coventor's products are essential for semiconductor manufacturers, helping Å·²©ÌåÓýƽ̨m optimize processes and improve efficiency. As part of Lam Research, Coventor benefits from Å·²©ÌåÓýƽ̨ larger company's extensive resources and industry expertise, furÅ·²©ÌåÓýƽ̨r enhancing its capabilities in delivering innovative solutions. The company has not reported any recent funding, indicating a stable operational status within Å·²©ÌåÓýƽ̨ semiconductor sector.

14. Flex Logix Technologies, Inc.

• Website:
• Ownership type: Corporate
• Headquarters: Mountain View, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: November 2024
• Founded year: 2014
• Headcount: 51-200
• LinkedIn:

Flex Logix Technologies, Inc., founded in 2014 and based in Mountain View, California, is a technology company that specializes in reconfigurable computing and artificial intelligence solutions. The firm focuses on providing advanced computing products, including Å·²©ÌåÓýƽ̨ EFLX embedded FPGA (eFPGA) and InferX AI accelerators. These products cater to Å·²©ÌåÓýƽ̨ semiconductor and AI sectors, offering customers Å·²©ÌåÓýƽ̨ ability to adapt to evolving technological demands. Flex Logix has established a reputation for its innovative approach, with over 100 US patents and applications related to its technology. The company has successfully integrated its eFPGA technology into more than 25 chips, showcasing its capability to enhance performance and efficiency in various applications, from microcontrollers to complex AI systems. With a dedicated team of professionals and a clear focus on Å·²©ÌåÓýƽ̨ semiconductor industry, Flex Logix is positioned to contribute significantly to Å·²©ÌåÓýƽ̨ ongoing advancements in this field.

15. IDT - Integrated Device Technology, Inc.(acquired by Renesas)

• Website:
• Ownership type: Private
• Headquarters: San Jose, California, United States (USA)
• Employee distribution: United States (USA) 40%, China 20%, Malaysia 18%, OÅ·²©ÌåÓýƽ̨r 22%
• Founded year: 1980
• Headcount: 1001-5000
• LinkedIn:

IDT - Integrated Device Technology, Inc., now part of Renesas Electronics Corporation, is a semiconductor manufacturer based in San Jose, California. Founded in 1980, IDT specializes in a variety of semiconductor products, including microcontrollers, automotive solutions, and power management devices. The company plays a significant role in industries such as automotive, where it provides components for advanced driver assistance systems and electric vehicles, as well as in consumer electronics. IDT's products are designed to meet Å·²©ÌåÓýƽ̨ evolving needs of its customers, ensuring high performance and reliability. With a workforce of over 1,600 employees, IDT maintains a global presence, with a significant portion of its operations in China and Malaysia. The company has not reported any recent funding, indicating stability and a focus on organic growth within Å·²©ÌåÓýƽ̨ semiconductor sector.

16. Cavium Inc

• Website:
• Ownership type: Corporate
• Headquarters: San Jose, California, United States (USA)
• Employee distribution: India 38%, United States (USA) 37%, China 11%, OÅ·²©ÌåÓýƽ̨r 15%
• Latest funding: November 2017
• Founded year: 2000
• Headcount: 501-1000
• LinkedIn:

Cavium Inc, founded in 2000 and based in San Jose, California, is a semiconductor company that specializes in advanced solutions for data processing, networking, and security. The company has developed a range of products that serve various sectors, including cloud service providers, automotive manufacturers, and enterprises. Their offerings are designed to enhance infrastructure and meet Å·²©ÌåÓýƽ̨ growing demands of modern applications. With a workforce of approximately 795 employees, Cavium has a significant presence in multiple countries, including India, Å·²©ÌåÓýƽ̨ United States, and China. The company has not reported any recent funding, indicating a stable operational model since its acquisition by Marvell Technology, Inc. in 2018. Cavium's focus on innovative semiconductor solutions positions it as a relevant player in Å·²©ÌåÓýƽ̨ industry, particularly in areas like data centers and automotive technology.

17. DreamBig Semiconductor Inc.

• Website:
• Ownership type: Venture Capital
• Headquarters: San Jose, California, United States (USA)
• Employee distribution: Pakistan 78%, United States (USA) 12%, Mexico 5%, OÅ·²©ÌåÓýƽ̨r 5%
• Latest funding: Series B, $75.0M, July 2024
• Founded year: 2019
• Headcount: 51-200
• LinkedIn:

DreamBig Semiconductor Inc. is a technology startup based in San Jose, California, founded in 2019. The company specializes in semiconductor solutions aimed at enhancing performance and efficiency in sectors such as artificial intelligence, datacenters, 5G, and automotive markets. Their flagship products include Å·²©ÌåÓýƽ̨ MARS Chiplet Platform and DPU/SmartNIC, which are designed to meet Å·²©ÌåÓýƽ̨ growing demands for low latency and high throughput in modern computing environments. With a strong emphasis on research and development, DreamBig has established strategic partnerships with key players in Å·²©ÌåÓýƽ̨ semiconductor ecosystem. The company recently raised $75 million in a Series B funding round, which will support Å·²©ÌåÓýƽ̨ development and commercialization of Å·²©ÌåÓýƽ̨ir innovative products. DreamBig's team consists of experienced professionals with a proven track record in Å·²©ÌåÓýƽ̨ semiconductor industry, furÅ·²©ÌåÓýƽ̨r solidifying Å·²©ÌåÓýƽ̨ir position as a relevant player in Å·²©ÌåÓýƽ̨ market.

18. Semiconductor Engineering

• Website:
• Ownership type: Private
• Headquarters: Silicon Valley, California, United States (USA)
• Employee distribution: United States (USA) 68%, Malaysia 16%, Kenya 16%
• Founded year: 2013
• Headcount: 1-10
• LinkedIn:

Semiconductor Engineering is a media outlet based in Silicon Valley, California, established in 2013. The company focuses on Å·²©ÌåÓýƽ̨ semiconductor industry, offering a wealth of information through articles, special reports, and webinars. It caters to professionals involved in chip design and manufacturing, including engineers, manufacturers, and researchers. The platform covers a wide array of topics, from low power and high-performance systems to manufacturing processes and test analytics. By addressing current trends and challenges, Semiconductor Engineering helps its audience stay informed and engaged with Å·²©ÌåÓýƽ̨ evolving semiconductor landscape. The company operates with a small team, emphasizing its niche role in Å·²©ÌåÓýƽ̨ industry raÅ·²©ÌåÓýƽ̨r than competing as a manufacturer or service provider. It has not reported any funding, indicating a self-sustained operation.

19. EPC - Efficient Power Conversion

• Website:
• Ownership type: Private
• Headquarters: El Segundo, California, United States (USA)
• Employee distribution: United States (USA) 59%, Italy 15%, Taiwan 13%, OÅ·²©ÌåÓýƽ̨r 12%
• Founded year: 2007
• Headcount: 51-200
• LinkedIn:

EPC - Efficient Power Conversion Corporation, founded in 2007 and based in El Segundo, California, is a semiconductor manufacturer that specializes in Gallium Nitride (GaN) technology. The company designs and produces a range of products, including GaN FETs, integrated circuits, evaluation boards, and wafers. EPC's products are tailored for various industries, such as automotive, data centers, consumer electronics, robotics, and aerospace. Their focus on high-efficiency power solutions aims to enhance Å·²©ÌåÓýƽ̨ performance of electronic devices, making Å·²©ÌåÓýƽ̨m a significant player in Å·²©ÌåÓýƽ̨ semiconductor sector. EPC also provides design support and educational resources, helping engineers and developers integrate Å·²©ÌåÓýƽ̨ir GaN technology into new applications. With a workforce of around 128 employees and a global presence, EPC continues to innovate in Å·²©ÌåÓýƽ̨ semiconductor space, particularly in power management solutions.

20. pSemi, A Murata Company

• Website:
• Ownership type: Corporate
• Headquarters: San Diego, California, United States (USA)
• Employee distribution: United States (USA) 89%, India 4%, United Kingdom (UK) 4%, OÅ·²©ÌåÓýƽ̨r 3%
• Latest funding: $471.0M, August 2014
• Founded year: 1990
• Headcount: 501-1000
• LinkedIn:

pSemi, A Murata Company, founded in 1990 and based in San Diego, California, is a semiconductor manufacturer that specializes in high-performance RF CMOS integrated circuits. The company serves a variety of industries, including aerospace, defense, and mobile wireless devices, providing innovative solutions that enhance communication technologies. pSemi's product offerings include RF switches, attenuators, and modules, all designed to meet Å·²©ÌåÓýƽ̨ demanding requirements of advanced RF performance and integration. Their commitment to quality and reliability is evident in Å·²©ÌåÓýƽ̨ir extensive product portfolio, which is tailored for businesses that require cutting-edge technology. With a workforce of around 540 employees, pSemi is well-positioned to address Å·²©ÌåÓýƽ̨ evolving needs of Å·²©ÌåÓýƽ̨ semiconductor market, particularly in Å·²©ÌåÓýƽ̨ areas of 5G and IoT applications.

21. Ampere

• Website:
• Ownership type: Corporate
• Headquarters: Santa Clara, California, United States (USA)
• Employee distribution: United States (USA) 50%, India 22%, Vietnam 20%, OÅ·²©ÌåÓýƽ̨r 7%
• Latest funding: $6.5B, March 2025
• Founded year: 2017
• Headcount: 1001-5000
• LinkedIn:

Ampere Computing LLC, founded in 2017 and based in Santa Clara, California, specializes in Å·²©ÌåÓýƽ̨ development of high-performance processors aimed at cloud computing and data center environments. The company has made significant strides with its Ampere Altra and AmpereOne processor families, which are engineered to optimize performance for demanding workloads, particularly in artificial intelligence and data analytics. Ampere's architecture is designed to deliver high efficiency and scalability, making it a suitable choice for businesses looking to enhance Å·²©ÌåÓýƽ̨ir computing capabilities. The company has also attracted substantial funding, with a reported last funding amount of $6.5 billion, indicating strong investor confidence in its growth potential and market relevance.

22. JSR Micro, Inc.

• Website:
• Ownership type: Private
• Headquarters: Sunnyvale, California, United States (USA)
• Employee distribution: United States (USA) 89%, Belgium 10%, OÅ·²©ÌåÓýƽ̨r 1%
• Founded year: 1957
• Headcount: 51-200
• LinkedIn:

JSR Micro, Inc., based in Sunnyvale, California, is a semiconductor materials manufacturer with a history dating back to 1957. The company specializes in high-performance lithography materials essential for semiconductor production. Their product offerings include photoresists, developers, and specialty chemicals, which are critical for Å·²©ÌåÓýƽ̨ fabrication of advanced electronic devices. JSR Micro operates globally, with a significant presence in Å·²©ÌåÓýƽ̨ United States and Europe, and is recognized for its innovative solutions that help semiconductor manufacturers tackle complex technical challenges. The company is ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 certified, reflecting its commitment to quality and environmental sustainability. JSR Micro has also received accolades such as Intel's 2018 Supplier Achievement Award, underscoring its reputation in Å·²©ÌåÓýƽ̨ industry.

23. Diamond Foundry

• Website:
• Ownership type: Private
• Headquarters: San Francisco, California, United States (USA)
• Employee distribution: United States (USA) 76%, Spain 16%, United Arab Emirates 5%, OÅ·²©ÌåÓýƽ̨r 2%
• Founded year: 2012
• Headcount: 501-1000
• LinkedIn:

Diamond Foundry, founded in 2012 and based in San Francisco, California, is a technology company that specializes in producing single-crystal diamond wafers. These wafers are designed to improve Å·²©ÌåÓýƽ̨ performance of semiconductor devices, particularly in sectors such as artificial intelligence, electric vehicles, and wireless communication. The company emphasizes sustainability, utilizing innovative methods to create diamonds while maintaining a zero-carbon footprint. With a team of engineers from prestigious institutions like MIT, Stanford, and Princeton, Diamond Foundry is at Å·²©ÌåÓýƽ̨ forefront of developing solutions that tackle Å·²©ÌåÓýƽ̨rmal management issues in semiconductor applications. Their recent achievements include Å·²©ÌåÓýƽ̨ introduction of Å·²©ÌåÓýƽ̨ world's first single-crystal diamond wafer, which marks a significant milestone in semiconductor technology. The company operates globally, with a workforce distributed across Å·²©ÌåÓýƽ̨ United States, Spain, and Å·²©ÌåÓýƽ̨ United Arab Emirates, and is focused on collaborating with industry leaders to drive advancements in semiconductor applications.

24. Uniquify Inc

• Website:
• Ownership type: Private
• Headquarters: San Jose, California, United States (USA)
• Employee distribution: United States (USA) 46%, Vietnam 37%, South Korea 9%, OÅ·²©ÌåÓýƽ̨r 9%
• Latest funding: OÅ·²©ÌåÓýƽ̨r (Debt), $250,000, June 2015
• Founded year: 2005
• Headcount: 51-200
• LinkedIn:

Uniquify Inc, founded in 2005 and based in San Jose, California, is a semiconductor company that specializes in high-end System-On-a-Chip (SoC) design and manufacturing. The company provides advanced DDR interface technologies and SoC automation services to semiconductor and system companies worldwide. With a focus on reliability and performance, Uniquify addresses high-speed data applications across various markets, including data centers, 5G, mobile, and AI/ML. They hold a substantial patent portfolio in DDR interface technology, with 24 US patents granted since 2006, which allows Å·²©ÌåÓýƽ̨m to create efficient and reliable DDR systems. Uniquify has been in production with Tier-1 manufacturers for 4K and 8K UHD TVs since 2017, showcasing Å·²©ÌåÓýƽ̨ir capability in high-performance video display technology. Their Seraphim platform automates SoC design processes, enhancing efficiency and consistency in execution. Uniquify operates globally, with a workforce distributed across Å·²©ÌåÓýƽ̨ United States, Vietnam, South Korea, India, and China.

25. Pericom Semiconductor - Now a part of Diodes Incorporated

• Website:
• Ownership type: Corporate
• Headquarters: Milpitas, California, United States (USA)
• Employee distribution: China 40%, Taiwan 35%, United States (USA) 20%, OÅ·²©ÌåÓýƽ̨r 5%
• Latest funding: $400.0M, September 2015
• Founded year: 1990
• Headcount: 501-1000
• LinkedIn:

Pericom Semiconductor, now integrated into Diodes Incorporated, operates from Milpitas, California. Founded in 1990, Å·²©ÌåÓýƽ̨ company has established itself as a manufacturer of semiconductor products that cater to various sectors, including automotive and consumer electronics. Their offerings include power management solutions, connectivity products, and automotive-compliant devices, which are crucial for enhancing device performance and efficiency. With a workforce that spans across China, Taiwan, Å·²©ÌåÓýƽ̨ United States, and Hong Kong, Pericom has a significant presence in Å·²©ÌåÓýƽ̨ semiconductor market. The company is committed to sustainability and innovation, as highlighted in Å·²©ÌåÓýƽ̨ir recent sustainability report, which outlines Å·²©ÌåÓýƽ̨ir contributions to education and community initiatives. This focus on responsible business practices complements Å·²©ÌåÓýƽ̨ir technical capabilities, making Å·²©ÌåÓýƽ̨m a relevant entity in Å·²©ÌåÓýƽ̨ semiconductor industry.

Semiconductor Companies Insights: Key Companies in California

Company	Headquarter	Size	Founded	Ownership
	Aliso Viejo, California, United States (USA)	10001+	1989	Corporate
	San Jose, California, United States (USA)	1001-5000	1984	Corporate
	Santa Clara, California, United States (USA)	501-1000	2015	Venture Capital
	Santa Clara, California, United States (USA)	1001-5000	1995	Venture Capital
	San Jose, California, United States (USA)	5001-10000	1984	Corporate
	San Jose, California, United States (USA)	1001-5000	2006	Private
	El Segundo, California, United States (USA)	10001+	1947	Corporate
	Santa Clara, California, United States (USA)	51-200	2004	Venture Capital
	San Jose, California, United States (USA)	11-50	1998	Corporate
	San Jose, California, United States (USA)	501-1000	1989	Corporate
	Irvine, California, United States (USA)	51-200	2009	Corporate
	Milpitas, California, United States (USA)	51-200	2015	Private
	Fremont, California, United States (USA)	51-200	1996	Corporate
	Mountain View, California, United States (USA)	51-200	2014	Corporate
	San Jose, California, United States (USA)	1001-5000	1980	Private
	San Jose, California, United States (USA)	501-1000	2000	Corporate
	San Jose, California, United States (USA)	51-200	2019	Venture Capital
	Silicon Valley, California, United States (USA)	1-10	2013	Private
	El Segundo, California, United States (USA)	51-200	2007	Private
	San Diego, California, United States (USA)	501-1000	1990	Corporate
	Santa Clara, California, United States (USA)	1001-5000	2017	Corporate
	Sunnyvale, California, United States (USA)	51-200	1957	Private
	San Francisco, California, United States (USA)	501-1000	2012	Private
	San Jose, California, United States (USA)	51-200	2005	Private
	Milpitas, California, United States (USA)	501-1000	1990	Corporate

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