onsemi
onsemi is a US semiconductor supplier focused on intelligent power and sensing technologies for automotive, industrial, and other electronic systems.
Last updated August 31, 2026
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Overview
onsemi, formally ON Semiconductor Corporation, is an American semiconductor company headquartered in Scottsdale, Arizona. The company was established in 1999 through the spin-off of Motorola's Semiconductor Components Group and became a public company through an initial public offering in April 2000. It continued to manufacture Motorola-originated discrete, standard analog, and standard logic devices while building a broader portfolio through internal development and acquisitions. The company supplies power-management, analog, signal-management, logic, discrete, custom, and sensing products. Its offerings include power transistors, diodes, rectifiers, insulated-gate bipolar transistors, field-effect transistors, silicon-carbide devices, voltage regulators, controllers, drivers, amplifiers, comparators, interfaces, microcontrollers, image sensors, optical sensors, and application-specific integrated circuits. These products are components rather than finished consumer goods and are generally designed into larger systems. Automotive and industrial applications are central to the company's current positioning. In automotive, onsemi supplies technologies for vehicle electrification, charging, powertrain management, advanced driver-assistance systems, vehicle imaging, cabin sensing, and energy-efficient power conversion. In industrial markets, its products support renewable-energy systems, motor drives, factory automation, power supplies, medical equipment, and infrastructure. The company also serves communications, computing, consumer electronics, LED lighting, aerospace, and defense customers. The business expanded significantly through acquisitions. Notable transactions included Cherry Semiconductor, AMI Semiconductor, SANYO Semiconductor, Aptina Imaging, Fairchild Semiconductor, SensL Technologies, Quantenna Communications, GT Advanced Technologies, and SWIR Vision Systems. Fairchild strengthened the company's power-semiconductor position, while imaging and sensing acquisitions broadened its capabilities in automotive and industrial vision. The company later closed or divested selected activities, including the Quantenna business and certain legacy product lines. In 2021, the corporation adopted the onsemi brand to present itself as a broader technology company rather than a supplier identified primarily with standard semiconductor components. Its business is organized around analog and mixed-signal, intelligent sensing, and power solutions activities. Manufacturing, packaging, design, and engineering operations span North America, Europe, and Asia. onsemi remains listed on the Nasdaq under the symbol ON and continues to focus its portfolio on energy efficiency, electrification, automation, and intelligent sensing.
History
onsemi was created in 1999 when Motorola separated its Semiconductor Components Group into an independent company. The new business inherited established lines in discrete semiconductors, standard analog devices, and standard logic, as well as manufacturing and engineering capabilities associated with Motorola's semiconductor operations. Its initial headquarters were in the Phoenix area of Arizona. The company completed an initial public offering on April 28, 2000. During the 2000s, onsemi broadened beyond its inherited product base through a series of acquisitions. Cherry Semiconductor added automotive and power-management expertise. Purchases and integrations involving TESLA SEZAM and TEROSIL expanded operations in the Czech Republic, while the acquisition of an LSI Logic facility added manufacturing capacity. The company also purchased a CPU-voltage and PC-thermal-monitoring business from Analog Devices, Catalyst Semiconductor, AMI Semiconductor, PulseCore Semiconductor, and California Micro Devices. These transactions increased its exposure to analog, timing, power, interface, and application-specific products. The company continued its expansion in the following decade. It acquired SANYO Semiconductor in 2011 and obtained imaging-related assets from Cypress Semiconductor. Truesense Imaging, Aptina Imaging, and Axsem strengthened image sensing and embedded connectivity capabilities. In 2015, onsemi announced an agreement to acquire Fairchild Semiconductor; the deal closed in 2016 and significantly increased the combined company's scale and power-semiconductor portfolio. Some activities were subsequently divested, including selected ignition IGBT, transient-voltage-suppression diode, and switching-thyristor product lines sold to Littelfuse. In 2017, the company acquired and licensed millimeter-wave technology developed by IBM's research organization for automotive radar. It acquired SensL Technologies in 2018, adding single-photon and advanced sensing expertise. In 2019, onsemi acquired Quantenna Communications, a fabless supplier associated with Wi-Fi technology. The company later discontinued the Quantenna division after efforts to sell the assets did not produce a buyer. Also in 2019, onsemi signed the United Nations Global Compact and agreed to acquire a 300-millimeter wafer fabrication facility in East Fishkill, New York, from GlobalFoundries; that transaction was completed in 2023. Leadership changed in 2020 when Keith Jackson retired and Hassane El-Khoury became chief executive. In 2021, the company changed its public brand from ON Semiconductor to onsemi. The rebrand communicated a strategy centered on intelligent power and sensing, electrification, automation, and high-value automotive and industrial applications. The company also agreed to acquire GT Advanced Technologies, a producer of silicon-carbide materials and technology, supporting its efforts in wide-bandgap power semiconductors. In the 2020s, onsemi continued to emphasize silicon carbide, imaging, and advanced sensing. It completed the acquisition of SWIR Vision Systems in 2024, broadening short-wave infrared capabilities, and announced an agreement to acquire Qorvo's silicon-carbide junction field-effect transistor business, including the United Silicon Carbide subsidiary. Its global footprint includes design centers, solution-engineering centers, and manufacturing operations across the Americas, Europe, and Asia. The company currently operates through activities commonly described as the Analog and Mixed-Signal Group, Intelligent Sensing Group, and Power Solutions Group, serving a worldwide customer base while remaining listed on Nasdaq under ON.
- 2024
SWIR Vision Systems acquisition completed
[1]The acquisition expanded the company's short-wave infrared sensing and imaging capabilities.
- 2023
East Fishkill facility acquisition completed
[1]onsemi completed the purchase of GlobalFoundries' 300-millimeter wafer facility in East Fishkill, New York.
- 2021
onsemi rebrand
[1]ON Semiconductor adopted the onsemi brand to reflect its broader power, sensing, and technology portfolio.
- 2020
Chief executive succession
[1]Hassane El-Khoury succeeded Keith Jackson as chief executive officer.
- 2019
UN Global Compact participation
[1]The company signed the United Nations Global Compact as part of its corporate-responsibility activities.
- 2016
Fairchild Semiconductor acquisition completed
[1]The completed transaction strengthened onsemi's position in power and analog semiconductors.
- 2011
SANYO Semiconductor acquisition
[1]The acquisition expanded manufacturing, analog, power, and discrete-semiconductor capabilities.
- 2000
Initial public offering
[1]The company completed its IPO and began trading as a public semiconductor company.
- 1999
Company established through Motorola spin-off
[1]Motorola separated its Semiconductor Components Group into the independent company that became ON Semiconductor.
Products and positioning
A differentiated semiconductor supplier focused on intelligent power, electrification, energy efficiency, and sensing, with particular strength in automotive and industrial applications.
Power semiconductors
Power solutions
This portfolio includes AC/DC controllers, DC/DC converters and regulators, gate drivers, voltage and current-management devices, thermal-management components, and power modules. It is used in electric vehicles, charging infrastructure, renewable-energy systems, industrial equipment, servers, and consumer power supplies. Silicon-carbide products are particularly important to the company's electrification and high-efficiency strategy.
Discrete devices
Discrete semiconductors
onsemi supplies bipolar transistors, diodes, rectifiers, IGBTs, MOSFETs, FETs, thyristors, and silicon-carbide devices. These components perform switching, rectification, protection, amplification, and power-conversion functions in automotive, industrial, communications, computing, and consumer systems.
Sensors and imaging
Intelligent sensing
The sensing portfolio includes CMOS image sensors, optical sensors, image-processing components, touch sensors, and short-wave infrared technologies. Applications include automotive cameras, advanced driver-assistance systems, industrial inspection, medical imaging, robotics, security, and other machine-vision systems.
Analog and mixed-signal ICs
Analog and signal management
Products include amplifiers, comparators, analog switches, digital potentiometers, audio and video application-specific devices, EMI/RFI filters, and interface components. These devices condition, route, protect, and interpret signals inside automotive electronics, industrial controls, communications equipment, and consumer products.
Logic and custom semiconductors
Logic and custom devices
The company offers clock-generation and clock-distribution products, memory, microcontrollers, standard logic, ASICs, custom foundry services, custom ultra-low-power memory, custom CMOS image sensors, and integrated passive devices. These products allow customers to implement application-specific functionality and system control.
Marketing campaigns
- 2021onsemi brand transformation
Global
The company introduced the onsemi identity and positioned the business around intelligent power and sensing rather than a broad catalog of commodity components.
Outcome. The rebrand became the company's continuing public identity.
Brand decisions
2024
Acquire SWIR Vision SystemsM&ABackground
onsemi pursued additional short-wave infrared capabilities for industrial and machine-vision applications.
Action taken
The company completed the acquisition of SWIR Vision Systems.
Aftermath
Short-wave infrared imaging became part of the company's expanded sensing portfolio.
2021
Adopt the onsemi brandStrategyBackground
Management wanted the corporate identity to reflect a broader portfolio and increased emphasis on differentiated power and sensing technologies.
Action taken
ON Semiconductor changed its public brand to onsemi.
Aftermath
The company continued to organize its strategy around automotive and industrial electrification, intelligent sensing, and energy efficiency.
2021
Acquire GT Advanced TechnologiesM&ABackground
The transaction supported onsemi's expansion in silicon-carbide materials and wide-bandgap power technology.
Action taken
onsemi agreed to acquire GT Advanced Technologies.
Aftermath
The deal reinforced the company's silicon-carbide supply and technology ambitions.
2015
Acquire Fairchild SemiconductorM&ABackground
onsemi sought greater scale and a stronger position in power and analog semiconductors.
Action taken
The company announced an approximately $2.4 billion acquisition and completed it in 2016.
Aftermath
Fairchild's product and manufacturing capabilities were integrated into the expanded onsemi business.
Recent events
onsemi completes acquisition of GTAT[3]
Reported:
onsemi announced that it completed its acquisition of silicon carbide producer GT Advanced Technologies (GTAT), strengthening its ability to secure and increase SiC supply.
onsemi announces acquisition of GT Advanced Technologies[4]
Reported:
onsemi announced it would acquire GT Advanced Technologies for $415 million. The transaction still required regulatory approval and was not expected to close until the first half of 2022.
Sierra Wireless selects ON Semiconductor Wi-Fi chipsets for XR routers[5]
Reported:
Sierra Wireless selected ON Semiconductor QCS-AX Wi-Fi 6 chipsets to power Wi-Fi functionality in its XR Series routers; the announcement described the collaboration between the companies.
FabExchange completes acquisition of ON Semiconductor's Rochester site[6]
Reported:
FabExchange completed its acquisition of ON Semiconductor’s Rochester, New York, site on December 15, 2020.
ON Semiconductor makes QCS-AX2 chipset samples available[7]
Reported:
ON Semiconductor announced that samples of its new QCS-AX2 chipset series, which supports the 6 GHz band based on the enhanced Wi-Fi 6E standard, were available to customers.
ON Semiconductor introduces 900V and 1200V SiC MOSFET families[8]
ON Semiconductor introduced two additional families of silicon carbide MOSFETs, rated at 900V and 1200V, for applications including solar inverters, electric-vehicle charging and server power supplies.
ON Semiconductor launches automotive LED drivers and controllers[9]
Reported:
ON Semiconductor launched a family of four devices for automotive exterior and interior lighting: two LED drivers, NCV7683 and NCV7685, and two current controllers, NCV7691 and NCV7692.
ON Semiconductor and SOS LAB sign LiDAR collaboration MOU[10]
ON Semiconductor and SOS LAB signed a collaboration memorandum of understanding to jointly use their technologies to accelerate development and commercialization of LiDAR systems for automotive and smart factory markets.
ON Semiconductor’s RSL10 platform wins LEAP Award silver[11]
Reported:
ON Semiconductor announced that its RSL10 Solar Cell Multi-Sensor Platform received the LEAP Award silver in the Connectivity category in 2019.
UTAC receives ON Semiconductor's 2019 Pinnacle Supplier Award[12]
Reported:
UTAC announced that it received the 2019 Pinnacle Supplier Award from ON Semiconductor, recognizing suppliers for extraordinary support in achieving ON Semiconductor’s performance and service objectives.
Sources19 sources
- 1Onsemien.wikipedia.org
- 2onsemi official websiteonsemi.com
- 3安森美完成收购GTATchinatimes.com
- 4onsemi宣布收购GT Advanced Technologiesnhbr.com
- 5Sierra Wireless为XR路由器选用ON Semiconductor Wi-Fi芯片组eejournal.com
- 6FabExchange 完成对 ON Semiconductor 罗切斯特厂址的收购iconnect007.com
- 7安森美半导体提供QCS-AX2芯片组系列样品tech.sina.com.cn
- 8ON Semiconductor推出900V及1200V碳化矽MOSFET系列semiconductor-today.com
- 9ON Semiconductor推出汽车LED驱动器和控制器ai-online.com
- 10安森美与SOS LAB签署激光雷达合作谅解备忘录semiconductor-today.com
- 11ON Semiconductor的RSL10平台获LEAP奖银奖3blmedia.com
- 12UTAC 获得 ON Semiconductor 颁发的 2019 年 Pinnacle Supplier Awardcieonline.co.uk
- 13安森美半导体推出创新的USB-C™ PD 3.0控制器，具先进功能集和更高能效tech.sina.com.cn
- 14安森美半导体推出汽车LED驱动器和控制器,用于先进的汽车照明应用tech.sina.com.cn
- 15安森美半导体推出新的900 V和 1200 V SiC MOSFET用于高要求的应用tech.sina.com.cn
- 16安森美半導體推出新的SiC MOSFET - 財經chinatimes.com
- 17安森美宣布推出全新650 V碳化矽MOSFET - 財經chinatimes.com
- 18ON Semiconductor Introduces High-Performance CMOS Global Shutter Image Sensor for Machine Vision and Mixed Reality Applicationseejournal.com
- 19ON Semiconductor launches World’s First Automotive Qualified SiPM Array Product for LiDAR Applicationseejournal.com
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