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ON Semiconductor Corporation (stylized and doing business as onsemi) is an American semiconductor supplier company, based in Scottsdale, Arizona. Products include power and signal management, logic, discrete, and custom devices for automotive, communications, computing, consumer, industrial, LED lighting, medical, military/aerospace and power applications. onsemi runs a network of manufacturing facilities, sales offices and design centers in North America, Europe, and the Asia Pacific regions. Based on its 2016 revenues of $3.907 billion,[2] onsemi ranked among the worldwide top 20 semiconductor sales leaders,[3] and was ranked No. 483 on the 2022 Fortune 500 based on its 2021 sales.[4][5]

Key Information

History

[edit]

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).[6]

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.[7][8]

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.[9]

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.

As of March 1, 2023, onsemi's headquarters was located in Scottsdale, Arizona.[10]

Acquisitions

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2000s

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  • 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.[11]
  • 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 March 2008, onsemi completed the acquisition of AMI Semiconductor for $915 million.[12]
  • On July 17, 2008, onsemi and Catalyst Semiconductor, Inc. announced the acquisition of Catalyst Semiconductor, Inc. by onsemi for $115 million.[13] On October 9, 2008, Catalyst Semiconductor, Inc. announced the approval of the acquisition.[14][15] On October 10, 2008, onsemi announced the completion of the acquisition.[16]
  • In November 2009, onsemi completed the acquisition of PulseCore Semiconductor for $17 million.
  • In December 2009, onsemi announced the acquisition of California Micro Devices.[17]

2010s

[edit]
  • 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.[18]
  • In June 2014, onsemi announced a $400 million deal to acquire California-based Aptina Imaging Corp.[19]
  • 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)[20]
  • In July 2015, onsemi completed the acquisition of Axsem AG.[21]
  • In November 2015, onsemi announced the acquisition of Fairchild Semiconductor for $2.4 billion.[22][23]
  • 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.[24]
  • In September 2016, onsemi completed the acquisition of Fairchild Semiconductor.[25]
  • 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.[26]
  • In May 2018, onsemi acquired Ireland-based company, SensL Technologies Ltd.[27]
  • In June 2019, onsemi acquired Quantenna Communications,[28] a fabless semiconductor company which was headquartered in Fremont, California with offices in India, Europe, America and Taipei,[29] for about $1 billion.[28] In October 2021, Bloomberg News reported that onsemi was looking to sell off Quantenna's assets.[30] After failing to find a buyer, onsemi shut down the division in 2022.[31]
  • In April 2019, onsemi agreed to acquire GlobalFoundries 300mm wafer fabrication facility in East Fishkill, New York.[32][33] In February 2023, it was announced the acquisition had been completed.[34]

2020s

[edit]
  • In August 2021 onsemi agreed to acquire GT Advanced Technologies.[35]
  • 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 [36]
  • 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.

Products

[edit]
2 PNP silicon epitaxial transistors BCP53−16T1G (device marking AH-16)

onsemi manufactures products in the following areas:

  • Custom: ASICs;[37] Custom Foundry Services; Custom ULP Memory; Custom CMOS Image Sensors;[38] Integrated passive devices
  • Discrete: Bipolar Transistors; Diodes & Rectifiers;[39] IGBTs & FETs;[40] Thyristors;[41] 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;[42] Standard Logic
  • Signal Management: Amplifiers & Comparators; Analog Switches; Audio/Video ASSP; Digital Potentiometers; EMI/RFI Filters; Interfaces; Optical, Image, & Touch Sensors

In 2013, the company introduced the industry's highest resolution optical image stabilization (OIS) integrated circuit (IC) for smartphone camera modules.[43]

Corporate responsibility

[edit]

Onsemi plans to achieve net-zero emissions by 2040. The industrial and automotive sectors, which are among the company's most important end markets, are responsible for more than 65% of global greenhouse gas emissions. This highlights the need for climate initiatives.[44]

In May 2024, the company's ESG risk rating was at 20.8%.[45]

Operations

[edit]

The company has three segments:

  • Analog and Mixed-Signal Group (AMG)
  • Intelligent Sensing Group (ISG)
  • Power Solutions Group (PSG)[46]

Facilities

[edit]
Manufacturing facility in Carmona, Philippines

There are several Solution Engineering Centers (SEC) and Design Centers around the world.[47] The company established the "onsemi Silicon Carbide Crystal Center" at the Penn State's Materials Research Institute in 2023.[48]

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

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

The company has manufacturing facilities in Canada, the United States, the Czech Republic, China, Japan, Malaysia, South Korea, the Philippines, and Vietnam.

Awards

[edit]
  • In 2000, onsemi won the Forbes Advertising Excellence best in category Industrial Machinery/Electrical Components.
  • onsemi won the Hot 100 Electronic products of 2009 and 2012 by EDN magazine.[49]
  • In 2012, onsemi won the IR Magazine U.S. Awards in three fields, Best IR by a CEO or chairman for mid cap; No. 56 best company in the U.S. in terms of Investor Relations; No. 3 in Best Investor Relations in technology sector for mid/small cap companies.[50]
  • In 2012 the company won the "Large Company of the Year Award" from the IEEE.[51]
  • In 2016, 2017, 2018, 2019, 2020, 2021 and 2022, onsemi was named[52] in World's Most Ethical Companies by Ethisphere Institute.

The company's subsidiary AMI Semiconductor (AMIS) has also won many awards, such as President's Award and Preferred Supplier from Rockwell Collins, Strategic Supplier Award from Emerson Rosemount, Inc., Outstanding Technical Support in New Product Development from Alliant Techsystems.[51]

See also

[edit]

References

[edit]
[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia

Onsemi

View on Grokipedia
from Grokipedia
onsemi is an American multinational company specializing in the design, manufacture, and sale of intelligent power and sensing solutions for applications in automotive, industrial, cloud power, and other markets. Headquartered in , it employs approximately 26,000 people worldwide and reported $7.1 billion in revenue for 2024. Founded as a spin-off from on July 4, 1999, the company initially operated as ON Semiconductor before rebranding to onsemi in to better reflect its focus on advanced technology leadership. It went public via an on April 28, 2000, and has since expanded through key acquisitions, including in 2016, which bolstered its portfolio in power and analog solutions, as well as earlier purchases of companies like AMI Semiconductor, Semiconductor, and Imaging. These moves have positioned onsemi as a major player in , with roots tracing back to 's pioneering work in transistors and since the mid-20th century. The company's global operations include 19 manufacturing sites across 9 countries, 43 design centers in 19 countries, and 8 solution engineering centers in 5 countries, enabling it to serve diverse end-markets. In 2024, automotive applications accounted for 60% of revenue, industrial for 24%, and other segments—including cloud power and —for the remaining 16%. onsemi's product lineup encompasses analog and mixed-signal integrated circuits, devices, discrete semiconductors, and image sensors, with a strong emphasis on wide-bandgap semiconductor technologies for automotive electrification. The company offers cost-optimized components for electric vehicles (EVs) primarily through its EliteSiC silicon carbide (SiC) MOSFETs and gate drivers, as well as emerging gallium nitride (GaN) power devices. These technologies enable higher efficiency, faster switching, reduced component count, smaller size, and lower system costs in EV applications such as traction inverters, onboard chargers (OBC), DC-DC converters, and fast charging systems. EliteSiC SiC MOSFETs and modules achieve high efficiency, reduced losses, and compact designs, while a 2025 collaboration with Innoscience aims to scale high-volume, cost-optimized GaN manufacturing, providing benefits including optimized packaging, fewer components, simplified thermal management, and lower total system costs for power applications including EVs. These advancements support partnerships with automakers including Volkswagen and Schaeffler for efficient EV powertrains. These products support innovations in vehicle electrification, systems, and infrastructure. Committed to environmental responsibility, onsemi is a signatory to the and has pledged to achieve net-zero by 2040, aligning its operations with broader goals in the .

Corporate overview

Founding and rebranding

ON Semiconductor was established on July 4, 1999, as a spin-off from 's Components Group through a $1.6 billion led by Pacific Group and other investors. The new entity focused initially on manufacturing and selling legacy Motorola products, particularly standard discrete, analog, and integrated circuits used in automotive, communications, , consumer, industrial, and military applications. Following its independence, ON Semiconductor pursued an on April 28, 2000, listing 30 million shares on the exchange under the ONNN at $16 per share, raising approximately $480 million. This move provided capital to support operations but occurred amid a volatile market environment. In the early , the company faced significant financial pressures stemming from the substantial incurred during the 1999 buyout, totaling around $1.14 billion in financing, which strained cash flows and led to efforts, including amendments to senior bank facilities in 2003 to manage repayment obligations. To align with its evolving portfolio in intelligent power and sensing technologies, ON Semiconductor rebranded to onsemi on , , introducing a refreshed , the "onsemi," and the "Intelligent Technology. Better Future." The rebranding emphasized , with a commitment to achieve net-zero emissions by 2040, while highlighting leadership in automotive , industrial automation, and energy-efficient solutions.

Headquarters and leadership

onsemi's corporate headquarters is located at 5701 North Pima Road in , following a relocation from Phoenix in 2022 to a Gold-certified building on the Salt River Pima-Maricopa Indian Community. The move supports the company's focus on and , accommodating approximately 700 administrative, research, and development employees in the area. Hassane El-Khoury has served as president, chief executive officer, and a member of the since December 7, 2020. Prior to joining onsemi, El-Khoury was president and chief executive officer of Corporation from 2016 until its acquisition by in 2020, and he held various roles in unit , product development, and applications at starting in 2007; earlier, he worked as a senior design engineer at Continental Automotive Systems. Key executives include Thad Trent, who has been executive and since February 2021, overseeing financial strategy with nearly 30 years of experience in the technology sector from prior roles at companies like . Other senior leaders encompass Sudhir Gopalswamy as group president of the Intelligent Sensing and Analog and Mixed-Signal Group and Paul Dutton as senior and chief legal officer. The board of directors, chaired by Alan Campbell since 2021, consists of eight members including El-Khoury, Susan K. Carter ( chair), Thomas L. Deitrich, Bruce E. Kiddoo, Paul A. Mascarenas, Gregory L. Waters, and Christine Y. Yan; Campbell announced his intention to retire after the 2026 annual meeting. The board's composition emphasizes diversity of perspectives, industry expertise in semiconductors and technology, and regular assessments to ensure balanced viewpoints. As of late , following a restructuring that reduced headcount by approximately 2,400, onsemi employs approximately 24,000 people worldwide, with a strategic emphasis on global talent acquisition to support innovation in power and sensing technologies across its network of facilities.

Key competitors

onsemi operates in a highly competitive analog and power semiconductors market. Key competitors include Analog Devices (ADI), Texas Instruments (TXN), NXP Semiconductors (NXPI), STMicroelectronics (STM), and Microchip Technology (MCHP).

Historical development

Origins and early growth

Following its spin-off from on July 4, 1999, ON Semiconductor operated as an independent entity focused on standard products, including discrete semiconductors and analog integrated circuits (ICs), while leveraging legacy assets from Motorola's and divisions. The 's early primarily derived from the automotive and industrial sectors, where for reliable power and signal components supported applications in vehicles and manufacturing equipment. This strategic emphasis on mature, high-volume markets allowed ON Semiconductor to establish a stable foundation amid the volatile of the early 2000s. To enhance cost efficiencies and tap into growing regional demand, ON Semiconductor expanded its manufacturing footprint into , with its , facility—originally established as a in 1995 during the era—serving as the first dedicated site. In 2002, the company announced an approximately $100 million investment to expand production at Leshan Phoenix Semiconductor Co. Ltd., a where ON Semiconductor held a 51% stake, planning to quadruple capacity for discrete and analog ICs by the end of 2002 while reducing operational costs through proximity to Asian supply chains and labor markets. This move not only mitigated rising expenses in the U.S. but also positioned the company to better serve expanding automotive and industrial customers in the region. The global of challenged ON Semiconductor, as demand plummeted industry-wide, yet the company achieved financial recovery by 2010 through targeted operational enhancements. attributable to ON Semiconductor rose to $290.5 million in 2010 from $61.0 million in 2009, compared to a net loss of $33.9 million in , driven by optimizations that improved inventory management, vendor consolidation, and manufacturing efficiencies. These efforts, including streamlined logistics and cost-control measures, restored profitability and supported revenue growth of 31% year-over-year. (Note: Financial figures sourced from consolidated statements in SEC Form filings.) Aligning with emerging global trends in , ON Semiconductor entered the LED and markets around 2012, introducing specialized drivers and controllers to enable efficient solid-state illumination systems. This expansion built on the company's core expertise, targeting applications in commercial and residential where LED adoption promised reduced and longer lifespans compared to traditional bulbs. By integrating these solutions, ON Semiconductor captured a share of the burgeoning market for energy-efficient , further diversifying beyond automotive and industrial bases.

Major acquisitions and expansions

In 2008, onsemi acquired AMI Semiconductor for approximately $915 million in an all-stock transaction, which significantly expanded its capabilities in mixed-signal and sensor technologies, particularly for automotive and industrial applications. This move integrated AMI's expertise in analog and mixed-signal semiconductors, enhancing onsemi's portfolio in and signal conditioning solutions. In 2010, onsemi announced the acquisition of SANYO Semiconductor from SANYO Electric Co., Ltd., completed in early 2011 for an enterprise value of approximately $366 million, including $144 million in cash and the assumption of debt. The deal strengthened onsemi's position in power discrete devices, such as MOSFETs and IGBTs, and provided a manufacturing foothold in , broadening its and market reach in . onsemi further advanced its imaging capabilities with the 2014 acquisition of Aptina Imaging for about $400 million in cash. Aptina's image sensor technology bolstered onsemi's expertise in high-performance imaging for automotive, consumer, and industrial uses, enabling innovations in and advanced driver-assistance systems. A landmark expansion occurred in 2016 when onsemi acquired for $2.4 billion in cash, creating a leading power provider with combined annual revenues exceeding $5 billion. This buyout significantly broadened onsemi's portfolio, including discretes, modules, and integrated circuits for automotive, industrial, and applications, while adding manufacturing sites and R&D resources. In February 2023, onsemi completed the acquisition of ' 300 mm East Fishkill fabrication facility in New York for $430 million, establishing its largest U.S. manufacturing site and enhancing capacity for advanced power and sensing solutions. In July 2024, onsemi acquired SWIR Vision Systems, a developer of colloidal quantum dot-based short-wave infrared (SWIR) imaging technology, for an undisclosed amount. The acquisition advanced onsemi's sensing technologies for applications in industrial inspection, defense, and , integrating SWIR's low-cost, high-resolution sensors into its intelligent sensing group. In January 2025, onsemi acquired Qorvo's silicon carbide (SiC) junction field-effect transistor (JFET) technology portfolio, including UnitedSiC subsidiary, for $115 million, bolstering its SiC power device offerings for electric vehicles and AI data centers. Most recently, in October 2025, onsemi completed the acquisition of rights to Vcore power technologies, including intellectual property licenses, from Aura Semiconductor for an undisclosed sum. This deal reinforced onsemi's leadership in AI data center power solutions, enhancing efficiency in voltage regulation and power delivery systems for high-performance computing.

Products and technologies

Power management solutions

onsemi's power management solutions encompass a broad portfolio of discrete devices and integrated circuits optimized for efficient power conversion and control in demanding applications. Central to this lineup are metal-oxide-semiconductor field-effect transistors (MOSFETs), insulated-gate bipolar transistors (IGBTs), and gate drivers, which facilitate high-performance switching in power supplies, converters, and inverters. These components enable reduced energy losses and enhanced system reliability, supporting scalability from low-voltage to high-power industrial systems. A key offering in this domain includes intelligent power modules (IPMs) designed specifically for (EV) charging infrastructure and motor control systems. These modules integrate power switches, drivers, and protection features into compact packages, leveraging up to 1200V silicon carbide (SiC), a wide-bandgap semiconductor material enabling high-efficiency power devices for high-voltage and high-temperature applications, devices to achieve superior efficiency, thermal management, and . onsemi's leadership in SiC technologies, highlighted by its EliteSiC portfolio, has positioned it as a premier supplier in efficient power solutions. For example, the EliteSiC SPM 31 series, launched in March 2025, delivers up to 30% lower energy consumption compared to traditional silicon-based alternatives, making it ideal for next-generation EV traction inverters and onboard chargers. onsemi offers cost-optimized components for electric vehicles (EVs), primarily through its EliteSiC silicon carbide (SiC) MOSFETs, gate drivers, and modules, as well as emerging gallium nitride (GaN) power devices. These technologies enable higher efficiency, faster switching, reduced losses, reduced component count, smaller size, and lower system costs in EV applications such as traction inverters, onboard chargers (OBC), DC-DC converters, and fast charging systems. These technologies support partnerships with automakers such as Volkswagen, where onsemi supplies EliteSiC-based power box solutions for next-generation traction inverters under a multi-year agreement, and Schaeffler, with whom onsemi has expanded collaboration to use EliteSiC in plug-in hybrid electric vehicle traction inverters for enhanced efficiency and reliability. In a significant advancement, onsemi unveiled vertical (GaN), a wide-bandgap semiconductor for high-frequency and high-power electronics, semiconductors in October 2025, built on proprietary GaN-on-GaN technology. This vertical architecture allows current to flow through the full thickness of the GaN layer, enabling operation at higher voltages and frequencies while reducing conduction and switching losses by nearly 50% relative to lateral GaN or counterparts. Targeted at AI data centers for efficient power supplies and broader efforts, including EV and renewable systems, these devices promise up to 2x higher power density, facilitating smaller form factors and lower cooling requirements. onsemi further pursues emerging gallium nitride power devices via collaborations, such as a December 2025 memorandum of understanding with Innoscience, to scale high-volume, cost-optimized manufacturing of GaN power devices. This collaboration delivers benefits including optimized packaging, fewer components, simplified thermal management, and lower total system costs for power applications including EVs. These solutions play a pivotal role in inverters, where SiC MOSFETs and IGBTs enable high-efficiency conversion in solar and systems, minimizing losses in grid-tied applications. In industrial automation, they power motor drives and with precise control and robustness against harsh environments. The power management segment, encompassing these products, accounted for approximately 47% of onsemi's revenue through the first three quarters of 2025 (as of Q3 2025), underscoring its strategic importance amid rising demand for and energy efficiency. The portfolio's depth has been bolstered by acquisitions, such as the 2016 integration of , which added advanced power ICs and expanded capabilities in high-voltage conversion.

Sensing and imaging technologies

onsemi's sensing and imaging technologies encompass a range of advanced sensors and detectors designed for high-performance applications in automotive, industrial, and sectors, emphasizing low-power operation and integration for . These technologies enable precise , enhanced visibility in challenging conditions, and processing at the edge, supporting the growth of autonomous vehicles, smart infrastructure, and IoT ecosystems. In automotive applications, onsemi provides image sensors critical for advanced driver-assistance systems (ADAS) and light detection and ranging () setups. The company's automotive-grade complementary metal-oxide-semiconductor () image sensors deliver and low-light performance, powering features like surround-view cameras and pedestrian detection in the majority of ADAS implementations. This expertise stems from the 2014 acquisition of Aptina Imaging, which bolstered onsemi's portfolio with specialized sensors for automotive vision systems. For , onsemi's silicon photomultipliers (SiPMs) and single-photon avalanche diodes (SPADs) serve as core detection elements, offering high sensitivity for 3D mapping and obstacle avoidance, as demonstrated in collaborations like the InnovizOne sensor. onsemi's environmental sensors address key parameters such as air quality, , and , facilitating applications in smart buildings and electric vehicles (EVs). Electrochemical sensor analog front-ends (AFEs) enable accurate detection of gases for air quality monitoring, integrated into systems for indoor environmental control and industrial safety. sensing solutions, including tire pressure monitoring systems (TPMS) and inductive position sensors, support EV battery management and structural integrity assessments by providing real-time data on inflation and . sensors, ranging from discrete devices to system-level monitors, ensure thermal regulation in smart building HVAC systems and EV powertrains, optimizing energy efficiency and preventing overheating. These sensors are often deployed in low-power configurations to extend battery life in distributed networks. The 2024 acquisition of SWIR Vision Systems expanded onsemi's capabilities in short-wave infrared (SWIR) detectors, introducing colloidal quantum-dot (CQD)-based sensors for enhanced imaging beyond the . These detectors excel in penetrating dense materials, gases, fabrics, and plastics, enabling applications like for security and surveillance, where they provide clear imagery in low-light or fog conditions. In industrial settings, SWIR technology supports material sorting and inspection, such as identifying defects in , sorting produce by ripeness, and verifying printed circuit boards (PCBs) without contact. The integration of these low-cost, high-resolution SWIR sensors into onsemi's portfolio advances 3D imaging and for and . To complement these sensors, onsemi develops custom application-specific integrated circuits () and signal conditioners tailored for edge AI processing in low-power IoT devices. These ASICs integrate analog-to-digital conversion and signal amplification with minimal energy use, enabling on-device inference for tasks like in sensor data streams. ICs optimize noise reduction and data fidelity, supporting AI algorithms in resource-constrained environments such as wearable health monitors and industrial . By focusing on system-on-chip (SoC) designs, onsemi achieves power efficiencies that allow continuous operation in battery-powered IoT nodes, enhancing real-time decision-making without cloud dependency. Power integration within these sensor modules ensures seamless for prolonged deployment.

Operations and facilities

Research and development centers

onsemi maintains an extensive global R&D comprising 43 centers and 8 solution centers worldwide, supporting in , sensing, and advanced materials. These facilities employ thousands of engineers and scientists focused on developing next-generation technologies for automotive, industrial, and AI applications, with a particular emphasis on wide bandgap semiconductors. In the United States, key R&D hubs include the company's headquarters in , near Phoenix, where efforts center on wide bandgap materials such as (SiC) and () to enable efficient power solutions. Similarly, facilities in New York, including Syracuse, drive advancements in GaN-based technologies; for instance, onsemi's vertical GaN platform, which reduces energy losses by nearly 50% in high-power systems, was developed by the Syracuse R&D team and leverages over 130 patents in process and device architecture. This work targets breakthroughs in AI data centers and , aligning with the company's broader strategy to enhance and . A notable recent underscores onsemi's commitment to SiC for clean energy: in July 2025, the company announced an $8 million contribution to a $20 million public-private partnership with and Empire State Development, establishing a dedicated wide bandgap materials on the university's . The facility will focus on , processing, and for higher-quality SiC substrates, involving university researchers, postdocs, and students to accelerate applications in electric vehicles and infrastructure. onsemi's annual R&D expenditure reached approximately $605 million for the trailing twelve months ending September 30, 2025, reflecting sustained investment in these priority areas amid a global network of centers distributed across North America, Europe, and Asia.

Manufacturing and global sites

onsemi maintains a global manufacturing footprint comprising 19 active sites, including wafer fabrication facilities (fabs), assembly, and test operations, strategically distributed across North America, Europe, and Asia Pacific to support its focus on power and sensing semiconductors. These sites enable high-volume production of technologies such as silicon carbide (SiC) devices, image sensors, and analog/mixed-signal integrated circuits, with an emphasis on operational efficiency and supply chain resilience. The company's fab-lite strategy prioritizes external foundry partnerships alongside select in-house capabilities to optimize capacity utilization, which stood at targeted levels of 100-120 days of inventory in 2025. In 2025, onsemi announced a restructuring plan including approximately 2,400 layoffs across business units and halted further investments in its Bucheon, South Korea SiC facility due to slowdowns in electric vehicle demand. In the United States, onsemi's major facilities include the site, its largest chip manufacturing plant, which features a 300mm fab acquired from in 2023 for $430 million, with a committed $1.3 billion investment, and supports advanced production alongside power devices. Other key U.S. operations are located in (assembly and test for discrete and integrated components), ( fab specializing in 0.11 µm to 0.5 µm , BCD, and processes), Mountain Top, Pennsylvania (high-volume assembly and test), and Hudson, New Hampshire (packaging and testing for power modules). Additionally, a new 66,000-square-foot facility in , began GaN production in 2025, focusing on proprietary vertical GaN-on-GaN devices using 200mm s to enable high-efficiency, high-volume applications in AI data centers and electrification. European manufacturing is centered at the Rožnov pod Radhoštěm facility in the Czech Republic, a high-volume wafer fab and epitaxy site spanning 16 acres, producing bipolar and analog circuits with plans for a $2 billion expansion into end-to-end SiC manufacturing to serve automotive and industrial markets. In Asia Pacific, onsemi operates multiple sites, including wafer fabs in Leshan, Shenzhen, and Suzhou, China; Bucheon, South Korea (world's largest SiC fab, expanded in 2023 for elite silicon carbide devices); Aizu-Wakamatsu, Japan; and assembly/test facilities in Seremban, Malaysia; Bình Dương and Đồng Nai, Vietnam; and Carmona, Cebu, and Tarlac City, Philippines. Shanghai, China, supports design and distribution but not core manufacturing. Historically, onsemi has streamlined its operations through divestitures under its fab-lite approach, closing or selling several sites to reduce fixed costs and enhance flexibility. Notable transactions in included the sale of the 200mm fab to LA Semiconductor for continued pure-play foundry use; the facility to ; the , fab; and the Niigata, Japan site to JS Foundry K.K. These moves eliminated redundant capacity while preserving geographic diversity.

Corporate responsibility

Sustainability and environmental efforts

onsemi has committed to achieving net-zero across Scopes 1, 2, and 3 by 2040, with near-term science-based targets validated by the (SBTi) including a 58.8% reduction in Scope 1 and 2 emissions by 2034 from a 2022 baseline. The company has achieved a 15% reduction in combined Scope 1 and 2 emissions as of 2024 from the 2022 baseline, totaling 1,467,300 metric tons of CO2 equivalent. These efforts involve process optimizations, energy efficiency improvements, and abatement technologies to address direct emissions from operations. To support its emissions goals, onsemi is transitioning to sources, targeting 50% by 2030 and 100% overall by 2040. The company has implemented installations at its Rožnov pod Radhoštěm site in the and has a solar installation in progress at the East Fishkill (EFK) facility , contributing to broader renewable procurement strategies that include power purchase agreements. These initiatives aim to reduce reliance on fossil fuel-based electricity, which constitutes a significant portion of Scope 2 emissions. onsemi maintains strict restrictions on hazardous substances in its products and , ensuring full compliance with the European Union's REACH and RoHS regulations through internal governance documents such as the Process Chemical Brochure and Product Chemical Content Brochure. Additionally, the company conducts annual audits for conflict minerals using the Responsible Minerals Initiative's Conflict Minerals Reporting Template (CMRT), achieving 100% conformant smelters and refiners for three consecutive years and adhering to Guidance, including for . These measures mitigate environmental and ethical risks in sourcing. Water conservation is a key focus in onsemi's manufacturing operations, with programs designed to minimize withdrawal and maximize reuse. In 2024, the company recycled 48% of its wastewater, totaling 7,524 megaliters out of 15,759 megaliters withdrawn, through on-site treatment and recycling systems. Notable examples include the Bucheon site in South Korea, where wastewater sludge is repurposed into construction blocks, supporting resource efficiency across high-water-use facilities.

Social impact and governance

onsemi demonstrates a strong commitment to social impact through targeted and ethical governance practices that prioritize and integrity. The company supports underrepresented communities via the ON Semiconductor Foundation, which in 2025 awarded $1.35 million in STEAM education grants to 37 global projects aimed at fostering innovation and access in science, technology, engineering, arts, and mathematics for underserved youth. These initiatives emphasize equitable , aligning with broader efforts to bridge opportunity gaps in host regions. In terms of diversity and inclusion, onsemi is committed to enhancing representation and fostering a culture of inclusion across the organization. Ethical governance is upheld through the Code of Business Conduct, enforced since 2000, which mandates comprehensive training for all employees to ensure compliance with global standards and prevent unethical practices. Complementing this, the "Giving Now" community giving program concentrates on and outcomes in countries where onsemi operates, thereby reinforcing corporate responsibility toward local societal needs.

Recognition

Industry awards

onsemi has received several industry awards recognizing its innovations in semiconductor technologies, particularly in automotive and power management applications. In 2023, onsemi won gold in the Leadership in Engineering Achievement Program (LEAP) Awards for its M3S EliteSiC devices, praised for advancements in for electric vehicles. The company was named the 2023 Featured Solutions Supplier at the EE Awards . In 2024, onsemi received the Automotive Electronics Solutions Supplier Award at the EE Awards Asia. onsemi has also received supplier excellence awards from automotive customers, including the 2025 Stellantis Supplier Award in the Innovation category for operational excellence and performance in 2024.

ESG and corporate rankings

onsemi has been recognized for its environmental, social, and governance (ESG) performance through inclusion in several prominent corporate sustainability indices and rankings. In October 2024, the company was named to the 100 Best Corporate Citizens list by Corporate Knights in partnership with 3BL Media, an evaluation of over 700 U.S. public companies based on more than 180 ESG factors across pillars such as clean revenue, sustainable investment, and sustainable taxes. The company has maintained membership in the Sustainability Index (DJSI) North America since 2018, achieving inclusion for the seventh consecutive year in December 2024. This index, managed by , assesses companies on economic, environmental, and social criteria through the Corporate Sustainability Assessment, with onsemi evaluated among semiconductor peers for its emissions management and governance practices. In February 2024, onsemi received an "A" ESG rating from for the sixth consecutive year, placing it among industry leaders for its exposure to ESG risks and opportunities, including strategies and diversity initiatives. This rating reflects the company's progress in areas like and inclusion, as detailed in its disclosures. Additional ESG evaluations underscore onsemi's corporate standing, including a Gold rating from EcoVadis in November 2024 (scoring 75/100, in the 96th percentile for its sector) and a "Prime" status from ISS ESG in the same period, recognizing superior management of risks. These rankings highlight onsemi's commitment to ethical supply chains and environmental stewardship within the .

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