The story
The company was founded in 1999. It was originally a spinoff of Motorola's Semiconductor Components Group headquartered in Phoenix, Arizona. It continues to manufacture Motorola's discrete, standard analog, and standard logic devices. On April 28, 2000, Onsemi launched its initial public offering (IPO).
Steve Hanson was the first president and chief executive officer of the company until 2002. Keith Jackson from Fairchild Semiconductor replaced Hanson as the second leader for the next 20 years. Major acquisitions added SANYO Semiconductor in 2011 and Fairchild Semiconductor in 2016, with total workforce over 30,000 and expanded its product portfolio.
In April 2019, the company signed the UN Global Compact. In September 2020, chief executive officer Keith Jackson announced his retirement from the company. In December 2020, Hassane El-Khoury, previously the president and chief executive officer of Cypress Semiconductor, succeeded Jackson. In August 2021, to better reflect its broad technology portfolio, differentiated product lines, and market leadership, ON Semiconductor rebranded itself as onsemi. In February 2022, it was announced that BelGaN Group BV had completed the acquisition of all shares of ON Semiconductor Belgium BV from the onsemi group.
2000s
In April 2000, onsemi completed the acquisition of Cherry Semiconductor Corp. (CSC) for $250 million. CSC was founded in 1972 as Micro Components Corporation (MCC). CSC was headquartered in East Greenwich, Rhode Island, USA.
In 2003, onsemi acquired TESLA SEZAM (manufacturer of semiconductor chips) and TEROSIL (production of silicon) in the Czech Republic. Both of these companies were the successors of the former state-owned company TESLA.
In May 2006, onsemi completed the acquisition of LSI Logic Gresham, Oregon Design & Manufacturing Facility.
In January 2008, onsemi completed the acquisition of the CPU Voltage and PC Thermal Monitoring Business from Analog Devices, Inc., for $184 million.
In December 2008, onsemi completed the acquisition of AMI Semiconductor (previously known as American Microsystems) for $915 million.
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On July 17, 2008, onsemi and Catalyst Semiconductor, Inc. announced the acquisition of Catalyst Semiconductor, Inc. by onsemi for $115 million. On October 9, 2008, Catalyst Semiconductor, Inc. announced the approval of the acquisition. On October 10, 2008, onsemi announced the completion of the acquisition.
In November 2009, onsemi completed the acquisition of PulseCore Semiconductor for $17 million.
In December 2009, onsemi announced the acquisition of California Micro Devices.
2010s
In June 2010, onsemi completed the acquisition of Sound Design Technologies, Ltd., for $22 million.
In January 2011, onsemi completed the acquisition of SANYO Semiconductor.
In February 2011, onsemi completed the acquisition of the CMOS Image Sensor Business Unit from Cypress Semiconductor, for $31.4 million.
In May 2014, onsemi completed the acquisition of Truesense Imaging, Inc.
In June 2014, onsemi announced a $400 million deal to acquire California-based Aptina Imaging Corp.
In July 2014, onsemi and Fujitsu Semiconductor announced Strategic Partnership (including foundry services agreement and the definitive agreement pursuant to which onsemi will become a 10% shareholder of Fujitsu's 8-inch wafer fab in Aizuwakamatsu, Japan)
In July 2015, onsemi completed the acquisition of Axsem AG.
In November 2015, onsemi announced the acquisition of Fairchild Semiconductor for $2.4 billion.
In August 2016, onsemi has entered into a definitive agreement with respect to the divestiture of the ignition IGBT business to Littelfuse and has also entered into a separate definitive agreement with Littelfuse to sell its transient voltage suppression diode and switching thyristor product lines, for a combined $104 million in cash.
In September 2016, onsemi completed the acquisition of Fairchild Semiconductor.
In March 2017, onsemi announced that it would acquire and license mmWave technology for automotive radar applications developed by IBM's Haifa, Israel, research team. It included staff, equipment, research facilities and intellectual property.
In May 2018, onsemi acquired Ireland-based company, SensL Technologies Ltd.
In June 2019, onsemi acquired Quantenna Communications, a fabless semiconductor company which was headquartered in Fremont, California with offices in India, Europe, America and Taipei, for about $1 billion. In October 2021, Bloomberg News reported that onsemi was looking to sell off Quantenna's assets. After failing to find a buyer, onsemi shut down the division in 2022.
In April 2019, onsemi agreed to acquire GlobalFoundries 300mm wafer fabrication facility in East Fishkill, New York. In February 2023, it was announced the acquisition had been completed.
2020s
In August 2021 onsemi agreed to acquire GT Advanced Technologies.
In July 2024 onsemi completed the acquisition of SWIR Vision Systems.
In December 2024 onsemi announced to acquire Qorvo's Silicon Carbide JFET Business, including United Silicon Carbide Subsidiary
In October 2025 onsemi announced it has completed the acquisition of rights to Vcore power technologies, including associated intellectual property (IP) licenses, from Aura Semiconductor.
In June 2026, Onsemi announced plans to acquire Synaptics in a $7 billion all-stock deal.
From Wikipedia’s article on Onsemi, shared under CC BY-SA 4.0.6