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onsemi in Arizona

By Arizona AI · Profile reviewed · 51 sourced facts

At a glance

onsemi (ON Semiconductor Corporation), a maker of power and sensing chips, has its global headquarters in Scottsdale, Arizona. onsemi's 2025 annual report describes the leased Scottsdale building as roughly 200,000 square feet for the headquarters plus design-center and research-and-development operations, and lists no Arizona manufacturing site. onsemi said in July 2025 that it is working with NVIDIA on the transition to 800-volt direct-current power architectures for next-generation AI data centers.

Key facts

Arizona location
Headquarters
Scottsdale, Arizona
Ownership
Public company
Nasdaq: ON
Website
onsemi.com

Sources: onsemi, U.S. Securities and Exchange Commission · Addresses open Google Maps in a new tab

Jobs listed on Arizona AI

50 open Arizona positions See onsemi jobs

From onsemi’s own careers site, refreshed twice a day.

onsemi in Arizona: Key Developments

How does onsemi fit into AI?

Modern AI runs on physical silicon, and that silicon passes through several hands before it ever answers a question. Here is the path, and where onsemi sits on it. Stages not marked below are shown for context and are not claims about onsemi.

  1. Chip design (here today): Companies like Nvidia, Apple and AMD design the chips. onsemi's Scottsdale headquarters and design center. Chip designers decide what a chip does and hand the blueprint to a factory. The three companies whose designs matter most to AI - Nvidia, Apple and AMD - do that work elsewhere, then send the designs to fabs. None of them owns a fab of its own.
  2. Wafer fabrication (here today): Fabs print billions of transistors onto silicon wafers. Global manufacturing network; Arizona is headquarters and design/R&D rather than a current fab. A fab prints a design onto a polished disc of silicon called a wafer, layer by layer, until billions of transistors exist where there was blank material. It is the hardest and most expensive step in the chain, and the reason a single factory can cost tens of billions of dollars.
  3. Advanced packaging: Wafers are cut and assembled into finished chips. Packaging cuts a finished wafer into individual chips and assembles them, often stacking several pieces of silicon and memory into one component. For AI chips this step is nearly as demanding as fabrication, and a wafer is not a usable product until it is done.
  4. Servers and devices: Chips are built into AI servers, phones and PCs. Finished chips are assembled into the things people actually buy and deploy: data-center servers, phones, laptops. This is where a chip stops being a component and starts being a product.
  5. AI in use: Data centers and devices run AI models on that silicon. The end of the chain: models answering questions, generating images and driving software, running on the silicon every earlier step produced. Every AI service anyone uses is running on physical hardware somewhere, and that hardware started as a wafer.

onsemi: Chip design (here today)

  • Power technology for AI data centers (company-reported): onsemi supplies high-efficiency power conversion technology used across the path that delivers electricity to dense AI computing infrastructure. Source: onsemi
  • Expanded role in NVIDIA MGX (company-reported): onsemi says its technology supports power-supply, battery-backup and emerging 800 VDC distribution applications in the NVIDIA MGX ecosystem. Source: onsemi
  • Sensors for robotics and Physical AI: onsemi identifies robotics, humanoids and Industry 4.0 among the applications for its intelligent-sensing portfolio. Source: U.S. Securities and Exchange Commission

onsemi: Wafer fabrication (here today)

  • Silicon carbide is vertically integrated: The 2021 GT Advanced Technologies acquisition strengthened onsemi's silicon-carbide crystal-growth and supply capabilities for high-voltage power semiconductors. Source: onsemi
  • SiC JFET technology targets AI power efficiency: The $115 million Qorvo SiC JFET technology acquisition added devices onsemi specifically positions for high-efficiency AC-DC power supplies in AI data centers. Source: onsemi

About onsemi

What onsemi does

ON Semiconductor Corporation, doing business as onsemi, is a global semiconductor company headquartered in Scottsdale, Arizona, with roots that reach back through Motorola and Fairchild Semiconductor. The modern company was created in 1999 when Motorola spun off its standard-products semiconductor business as ON Semiconductor. It went public in 2000, acquired Fairchild Semiconductor in 2016, and rebranded as onsemi in 2021 as it concentrated its strategy around intelligent power and intelligent sensing. onsemi's core business sits deeper in the hardware stack than the GPUs and CPUs that receive most AI attention.

The company makes:

  • power semiconductors
  • analog and mixed-signal devices
  • image and other sensing technologies

Its products manage and convert electricity, sense the physical world, and help control machines. Those capabilities are used across vehicles, industrial equipment, energy infrastructure, data centers and increasingly robotics and other forms of Physical AI.

In Arizona

Scottsdale headquarters: In March 2023, onsemi moved its headquarters to 5701 N. Pima Road in Scottsdale, on the Salt River Pima-Maricopa Indian Community. Its 2025 annual report describes the leased Scottsdale building as roughly 200,000 square feet housing the corporate headquarters plus design-center and research-and-development operations. The current Scottsdale location is a headquarters and engineering site, not one of the manufacturing facilities listed in onsemi's 2025 Form 10-K.

Phoenix roots: onsemi says it and its predecessors operated from the 52nd Street and McDowell Road site in Phoenix from 1952 until the March 2023 move. That property served first as a manufacturing site and later as design and solution-engineering labs and the corporate headquarters.

For Arizona, onsemi adds a different layer to the state's semiconductor economy than Intel's and TSMC's large fabrication campuses. Arizona is the corporate and engineering home of a global supplier whose technologies reach automotive electrification, industrial automation, AI data-center power and intelligent sensing.

If the Synaptics transaction closes and the combined strategy works as planned, Scottsdale would also be the headquarters of a company with a much broader position in Edge AI and Physical AI. That makes onsemi important to Arizona's AI story even though its current Scottsdale operation is not a wafer fab.

Role in AI and chips

AI data centers have become a particularly important growth market. ON supplies power-conversion technology across the power path that feeds high-density computing hardware, and it is working with NVIDIA on the industry's transition toward 800-volt direct-current power architectures for next-generation AI data centers.

In May 2026, onsemi said its role in NVIDIA's MGX ecosystem spans power-supply, battery-backup and emerging 800 VDC power-distribution applications. By August 2026, CEO Hassane El-Khoury described AI data centers as onsemi's fastest-growing business and said the company expected that revenue to more than double during 2026.

Proposed Synaptics acquisition: The next strategic step could broaden ON far beyond power and sensing. In June 2026, onsemi agreed to acquire Synaptics in an all-stock transaction valued at about $7 billion. Under a revised agreement announced October 1, 2026, onsemi will instead pay $123 per Synaptics share in cash, an aggregate value of about $5.7 billion.

Synaptics would add:

  • Edge AI processors
  • neural processing capabilities
  • wireless connectivity
  • human-machine interfaces

onsemi describes the proposed combination as a move toward four connected pillars of Physical AI:

  • Power
  • Sense
  • Connected Compute
  • Control

The transaction is still pending and is expected to close in mid-2027, subject to Synaptics shareholder approval, regulatory approvals and other closing conditions. Until then, Synaptics remains a separate company.

Controversies and Issues

Shareholder class action, dismissed and on appeal: A putative securities class action filed in December 2023, and transferred to the U.S. District Court for the District of Arizona in March 2024, alleged that onsemi and certain of its officers made misleading statements about its silicon carbide business. The court dismissed the case with prejudice on July 23, 2026, and the plaintiff filed an appeal to the Ninth Circuit on August 24, 2026. Shareholder derivative suits making similar allegations in Arizona courts are on hold until that case is resolved. Status as of onsemi's November 2026 quarterly report: appeal pending.

2025 and 2026 workforce reductions, worldwide: onsemi began a company-wide restructuring in February 2025 to cut its global workforce by about 2,400 employees, and in January 2026 started a further reduction of about 650 employees. As of October 2, 2026, it had paid severance to about 600 employees terminated under the 2026 plan.

onsemi in Arizona: By the Numbers

Each figure is dated and linked to its source. Figures that are company-reported, announced, or projected rather than measured are labeled.

  • Scottsdale headquarters and R&D space: 200,000 sq ft
  • Scottsdale HQ collaboration capacity: Up to 1,000 people (company-reported)
  • Regular full-time employees worldwide: Approximately 22,600
  • Revenue, 2025: $6.0 billion
  • AI data-center revenue outlook: Expected to more than double in 2026 (projected)
  • Proposed Synaptics acquisition (revised terms): $123 per Synaptics share in cash, about $5.7 billion in aggregate value (announced)

The Arizona build-out, 1952 to 2026

  • 1952: Predecessor operations begin at Phoenix site
  • 1999: Motorola semiconductor spin-off creates ON Semiconductor
  • 2000: Initial public offering
  • 2016: Fairchild Semiconductor acquisition
  • 2021: ON Semiconductor rebrands as onsemi
  • 2023: Headquarters moves from Phoenix to Scottsdale
  • 2024: SWIR Vision Systems acquisition
  • 2025: Qorvo silicon-carbide JFET technology acquisition
  • 2026: Synaptics acquisition agreement announced

onsemi headquarters, Scottsdale, Arizona

MeasureValueAs ofBasisSource
Address5701 N. Pima Rd., Scottsdale, AZ 852502026-10-28verifiedonsemi
What it doesGlobal headquarters plus design-center and research-and-development operations2025-12-31verifiedU.S. Securities and Exchange Commission

Facilities

MeasureValueAs ofBasisSource
Current Arizona operating roleHeadquarters, design and R&D; Arizona is not listed among onsemi's current manufacturing facilities2025-12-31verifiedU.S. Securities and Exchange Commission
Scottsdale product focusPower management, signal management, discrete and logic2026-08-14company-reported From the company's own published information.onsemi
Headquarters energy reduction from move12.84 million kWh less annual energy use than the 2021 headquarters baseline2023-03-22company-reported From the company's own published information.onsemi
Headquarters moves from Phoenix to ScottsdaleMarch 20232023-03-01verifiedonsemi
Manufacturing centers worldwide192026-08-14company-reported From the company's own published information.onsemi
Design centers worldwide432026-08-14company-reported From the company's own published information.onsemi
Solution engineering centers worldwide82026-08-14company-reported From the company's own published information.onsemi

Investment

MeasureValueAs ofBasisSource
Revenue, 2023$8.3 billion2023-12-31verifiedU.S. Securities and Exchange Commission
Revenue, 2024$7.1 billion2024-12-31verifiedU.S. Securities and Exchange Commission
Net income attributable to onsemi, 2025$121 million2025-12-31verifiedU.S. Securities and Exchange Commission
Gross margin, 202533.1%, down from 45.4% in 20242025-12-31verifiedU.S. Securities and Exchange Commission
Research and development spending, 2025$584 million2025-12-31verifiedU.S. Securities and Exchange Commission
Restructuring, impairment and other charges, 2025$667 million2025-12-31verifiedU.S. Securities and Exchange Commission
Projected addressable market after Synaptics$243 billion by 2030, about $30 billion larger than onsemi's standalone estimate2026-06-25projected A forward-looking estimate, not a measured result.onsemi
Expected Synaptics closingMid-2027, subject to Synaptics shareholder approval, regulatory approvals and other closing conditions2026-06-25announced From a public announcement. Plans can change.onsemi

Workforce

MeasureValueAs ofBasisSource
Current company website workforce figureApproximately 26,0002026-08-14company-reported From the company's own published information.onsemi
Global workforce distributionAbout 15% U.S. and Canada, 12% Europe and Middle East, 73% Asia Pacific and Japan2025-12-31verifiedU.S. Securities and Exchange Commission
Global workforce reduction initiated in 2025Approximately 2,400 employees2025-02-24verifiedU.S. Securities and Exchange Commission
Additional global workforce reduction initiated in January 2026Approximately 650 employees2026-01-31verifiedU.S. Securities and Exchange Commission

Production

MeasureValueAs ofBasisSource
GT Advanced Technologies acquisition$415 million cash acquisition strengthened onsemi's vertically integrated silicon-carbide supply2021-11-01verifiedonsemi
SWIR Vision Systems acquisitionJuly 20242024-07-02verifiedonsemi
Qorvo silicon-carbide JFET technology acquisition$115 million acquisition completed January 20252025-01-15verifiedonsemi
Intelligent Power revenue, 2025$3.009 billion2025-12-31verifiedU.S. Securities and Exchange Commission
Intelligent Sensing revenue, 2025$1.164 billion2025-12-31verifiedU.S. Securities and Exchange Commission
2025 end-market mixAutomotive 51%; industrial 28%; other markets, including computing and AI data centers, 21%2025-12-31verifiedU.S. Securities and Exchange Commission
Manufacturing input costs from third-party contractors34% in 20252025-12-31verifiedU.S. Securities and Exchange Commission
Fab Right manufacturing optimizationDefinitive agreements announced to divest two manufacturing facilities as onsemi continued reshaping its global manufacturing footprint2026-07-07announced From a public announcement. Plans can change.onsemi
AI data-center business growth, Q1 2026More than 30% sequential growth2026-04-03company-reported From the company's own published information.onsemi
NVIDIA 800 VDC collaborationonsemi is working with NVIDIA on 800 VDC power architectures for next-generation AI data centers2025-07-29company-reported From the company's own published information.onsemi
NVIDIA MGX ecosystem roleonsemi says its power technology supports every stage of power conversion within the NVIDIA MGX ecosystem2026-05-29company-reported From the company's own published information.onsemi
What Synaptics would addEdge AI compute, human-machine interfaces, wireless connectivity and software, complementing onsemi's existing power and sensing portfolio2026-06-25announced From a public announcement. Plans can change.onsemi
Proposed Physical AI platformPower, Sense, Connected Compute and Control2026-06-25announced From a public announcement. Plans can change.onsemi

Other

MeasureValueAs ofBasisSource
Predecessor operations begin at Phoenix site19521952-01-01company-reported From the company's own published information.onsemi
Motorola semiconductor spin-off creates ON Semiconductor19991999-07-04verifiedonsemi
Initial public offeringApril 20002000-04-28verifiedonsemi
Fairchild Semiconductor acquisitionSeptember 20162016-09-19verifiedonsemi
ON Semiconductor rebrands as onsemiAugust 20212021-08-05verifiedonsemi
Synaptics acquisition agreement announcedJune 20262026-06-25announced From a public announcement. Plans can change.onsemi

Sources

onsemi Jobs in Arizona (50 open)

Arizona AI currently tracks 50 open onsemi roles in Arizona, the largest named category being business & corporate (13). Counts come from the Arizona AI job index, aggregated from the employer's own careers system and refreshed twice daily; they reflect published listings, not total employment.

onsemi Business & Corporate Jobs in Arizona (13)

onsemi Process & Equipment Engineering Jobs in Arizona (7)

onsemi Supply Chain & Procurement Jobs in Arizona (7)

onsemi Hardware & Design Engineering Jobs in Arizona (4)

onsemi Software, Data & AI Jobs in Arizona (3)

onsemi Internships & Early Career Jobs in Arizona (1)

onsemi IT, Security & Networking Jobs in Arizona (1)

onsemi Other Roles Jobs in Arizona (14)

onsemi in Arizona: Common Questions

How many jobs does onsemi have open in Arizona right now?

Arizona AI is currently tracking 50 open onsemi roles in Arizona, across Scottsdale, Phoenix and Tempe. The count updates automatically as onsemi adds and removes postings, and duplicate listings for the same role are merged.

What kinds of roles does onsemi hire for in Arizona?

The largest categories among current listings at onsemi in Arizona are business & corporate (13), process & equipment engineering (7), supply chain & procurement (7), hardware & design engineering (4). Categories are derived from job titles by Arizona AI.

Where in Arizona are onsemi jobs located?

onsemi lists Arizona roles in Scottsdale, Phoenix and Tempe. Locations are shown exactly as onsemi publishes them; the company's main Arizona site is Scottsdale, AZ. Employers sometimes label roles with the metropolitan area rather than the specific campus city.

How do I apply for a job at onsemi in Arizona?

Each listing on this page links through to onsemi's own application page. Arizona AI does not collect applications or charge job seekers, and roles are aggregated from the employer's official careers system rather than from third-party recruiters.

What does onsemi do?

onsemi designs and supplies semiconductors used to manage power, sense the physical world and control electronic systems. Its portfolio includes silicon and silicon-carbide power devices, analog and mixed-signal products, image and other sensing technologies, and related components for automotive, industrial, AI data-center and other applications.

How is onsemi involved in artificial intelligence?

onsemi is primarily an AI infrastructure and Physical AI enabler rather than a maker of general-purpose AI GPUs. Its power semiconductors help deliver electricity efficiently through AI data centers, while its sensing technologies support machines that need to perceive the physical world. onsemi is also working with NVIDIA on 800 VDC power architectures and supplies technology into the NVIDIA MGX ecosystem.

Does onsemi manufacture semiconductors in Arizona?

Not at its current Scottsdale site. onsemi's 2025 Form 10-K describes Scottsdale as its corporate headquarters plus design-center and R&D operations, and Arizona is not listed among the company's current manufacturing facilities. The company's predecessor Phoenix site did historically include manufacturing before later serving as engineering labs and headquarters.

What would the Synaptics acquisition change?

If the proposed acquisition closes, Synaptics would add Edge AI compute, wireless connectivity, human-machine interfaces and software to onsemi's existing power and sensing portfolio. onsemi says that would position the combined company across Power, Sense, Connected Compute and Control for Physical AI. The transaction remains pending and is expected to close in mid-2027 subject to shareholder, regulatory and other closing conditions.

How is onsemi different from TSMC?

TSMC is primarily a foundry that manufactures chips designed by customers. onsemi is an integrated semiconductor supplier that designs its own power, analog and sensing products and uses both its own global manufacturing network and outside manufacturing partners. In Arizona, TSMC's presence is centered on large wafer fabs in Phoenix, while onsemi's current Arizona presence is its Scottsdale global headquarters, design center and R&D operations.