Onsemi

ON Semiconductor Corporation
	File:Onsemi logo.svg Logo used since rebranding to onsemi in August 2021
Company type	Public
Industry	Semiconductor
Founded	1999; 27 years ago
Headquarters	Scottsdale, Arizona, United States
Area served	Worldwide
Key people	Hassane El-Khoury (CEO)
Products	Power and signal management components, logic devices, discrete parts, customized solutions
Number of employees	30,000+ (2020s)
Website	www.onsemi.com

Adapted from the English Wikipedia article Onsemi, available under CC BY-SA 4.0Updated 28 November 2025

ON Semiconductor Corporation (branded as onsemi) is a U.S.-based supplier of semiconductor products, with its main office located in Scottsdale, Arizona. Its range of offerings encompasses power and signal management components, logic devices, discrete parts, and customized solutions that cater to industries such as automotive, communications, computing, consumer electronics, industrial applications, LED lighting, healthcare, military/aerospace, and power management. onsemi maintains manufacturing plants, sales branches, and design hubs throughout North America, Europe, and the Asia-Pacific region. Reporting revenues of $3.907 billion in 2016, onsemi was ranked among the top 20 semiconductor companies worldwide and placed 483rd on the 2022 Fortune 500 list based on 2021 revenue figures.

History

The company was established in 1999 as a spin-off from Motorola’s Semiconductor Components Group located in Phoenix, Arizona. It continues to produce Motorola’s discrete, analog, and standard logic products. onsemi went public with an initial public offering (IPO) on April 28, 2000.

Steve Hanson held the roles of president and CEO until 2002, after which Keith Jackson—formerly of Fairchild Semiconductor—assumed leadership for two decades.

Strategic acquisitions have significantly increased the workforce to over 30,000 employees and broadened the product lineup. Notable purchases include SANYO Semiconductor in 2011 and Fairchild Semiconductor in 2016.

In April 2019, onsemi became a participant in the United Nations Global Compact, underscoring its dedication to sustainability.

Keith Jackson stepped down as CEO in September 2020; Hassane El-Khoury, previously CEO at Cypress Semiconductor, succeeded him in December 2020.

To better reflect its extensive technology scope and market position, ON Semiconductor rebranded itself as onsemi in August 2021.

In February 2022, BelGaN Group BV acquired all shares of ON Semiconductor Belgium BV from onsemi.

As of March 1, 2023, the company’s headquarters remain situated in Scottsdale, Arizona.

2000s

April 2000: Purchased Cherry Semiconductor Corp. (CSC) for $250 million; CSC originated as Micro Components Corporation in 1972.
2003: Acquired TESLA SEZAM and TEROSIL in the Czech Republic—entities succeeding the former state-owned TESLA.
May 2006: Bought LSI Logic's design and manufacturing site in Gresham, Oregon.
January 2008: Acquired CPU Voltage and PC Thermal Monitoring Business from Analog Devices for $184 million.
December 2008: Completed acquisition of AMI Semiconductor for $915 million.
July–October 2008: Took over Catalyst Semiconductor, Inc. for $115 million.
November 2009: Finalized purchase of PulseCore Semiconductor for $17 million.
December 2009: Acquired California Micro Devices.

2010s

June 2010: onsemi acquired Sound Design Technologies, Ltd., investing $22 million.
January 2011: Completed acquisition of SANYO Semiconductor.
February 2011: Purchased the CMOS Image Sensor Business Unit from Cypress Semiconductor for $31.4 million.
May 2014: Acquired Truesense Imaging, Inc.
June 2014: Announced a $400 million deal to acquire California-based Aptina Imaging Corp.
July 2014: Established a Strategic Partnership with Fujitsu Semiconductor, including foundry services and acquiring a 10% stake in Fujitsu's Aizuwakamatsu-based 8-inch wafer fab in Japan.
July 2015: Acquired Axsem AG.
November 2015: Announced the $2.4 billion acquisition of Fairchild Semiconductor.
August 2016: Agreed to divest its ignition IGBT business and sell transient voltage suppression diode and switching thyristor product lines to Littelfuse for $104 million.
September 2016: Completed acquisition of Fairchild Semiconductor.
March 2017: Acquired automotive radar mmWave technology from IBM’s Haifa research group including personnel and intellectual property rights.
May 2018: Purchased Ireland-based SensL Technologies Ltd., specializing in SiPM, SPAD, and LiDAR sensor technologies.
June 2019: Acquired fabless semiconductor firm Quantenna Communications for approximately $1 billion; after unsuccessful attempts to divest Quantenna’s business unit, onsemi closed it down in 2022.
April 2019: Agreed to purchase GlobalFoundries’s East Fishkill, New York-based 300mm wafer fabrication plant; transaction completed by February 2023.

2020s

In August 2021, onsemi finalized an agreement to acquire GT Advanced Technologies.
By July 2024, onsemi had completed the purchase of SWIR Vision Systems.
In December 2024, onsemi revealed its acquisition of Qorvo's Silicon Carbide JFET Business, which includes the United Silicon Carbide subsidiary.
October 2025 saw onsemi finalize the acquisition of rights and related intellectual property for Vcore power technologies from Aura Semiconductor.

Products

The range of products offered by onsemi encompasses:

Custom: ASICs; Custom Foundry Services; Custom ULP Memory; Custom CMOS Image Sensors; Integrated passive devices
Discrete: Bipolar Transistors; Diodes & Rectifiers; IGBTs & FETs; Thyristors; Silicon Carbide (SiC)
Power Management: AC/DC Controllers & Regulators; DC/DC Controllers, Converters & Regulators; Drivers; Thermal Management; Voltage & Current Management
Logic: Clock Generation; Clock & Data Distribution; Memory; Microcontrollers; Standard Logic
Signal Management: Amplifiers & Comparators; Analog Switches; Audio/Video ASSP; Digital Potentiometers; EMI/RFI Filters; Interfaces; Optical, Image & Touch Sensors

In 2013, onsemi launched the industry's highest resolution optical image stabilization integrated circuit designed specifically for smartphone camera modules.

Corporate responsibility

Onsemi is committed to reaching net-zero carbon emissions by 2040. Given that over 65% of global greenhouse gas emissions originate from its primary markets—industrial and automotive—this goal highlights the significance of its environmental efforts.

As of May 2024, the company's ESG risk score was recorded at 20.8%.

Operations

Onsemi's business is organized into three main segments:

Analog and Mixed-Signal Group (AMG)
Intelligent Sensing Group (ISG)
Power Solutions Group (PSG)

Facilities

The company operates multiple Solution Engineering Centers (SEC) and Design Centers worldwide. In 2023, it inaugurated the "onsemi Silicon Carbide Crystal Center" at Penn State's Materials Research Institute to support advanced silicon carbide material development.

Solution Engineering Centers are situated in the United States, Germany, South Korea, China, Taiwan, Japan, Slovakia, and Sweden.

Design Centers are located across the United States, Canada, Belgium, Czech Republic, Germany, Ireland, Romania, Slovakia, Sweden, Switzerland, India, Israel, Italy, Japan, South Korea, and Taiwan.

Manufacturing plants are distributed throughout Canada, the United States, the Czech Republic, China, Japan, Malaysia, South Korea, the Philippines, and Vietnam.

Awards

In 2000, onsemi received the Forbes Advertising Excellence Award in the Industrial Machinery/Electrical Components category.
Featured in EDN magazine's Hot 100 Electronic Products list in both 2009 and 2012.
Awarded three IR Magazine U.S. accolades in 2012 including Best IR by a CEO or Chairman (mid cap), ranked No. 56 among best U.S. companies for Investor Relations, and placed No. 3 in technology sector IR for mid/small caps.
Honored as IEEE's "Large Company of the Year" in 2012.
Recognized as one of the World's Most Ethical Companies by the Ethisphere Institute consecutively from 2016 through 2022.

Subsidiary AMI Semiconductor has been distinguished with numerous honors such as Rockwell Collins' President's Award and Preferred Supplier designation, Emerson Rosemount Inc.'s Strategic Supplier Award, and Alliant Techsystems' Outstanding Technical Support in New Product Development award.

External links