Intelligent Technology. Better Future.

We are building a better future through intelligent technology. For over 60 years, onsemi and its ancestors have been leading the world’s greatest technology advancements.

About onsemi

Phoenix, Arizona, USA


Employees worldwide


Design Centers in 19 countries


Manufacturing Sites in 10 countries


Solution Engineering Centers in 5 countries

Our Mission

We push innovation to create intelligent power and sensing technologies that solve the most challenging customer problems. Our employees are inspired each day to increase stakeholder value through high-quality and high-value products and services.

onsemi Mission


Learn more about our executive team and the board of directors.

Meet Them
Hassane El-Khoury

Our Markets

As a leading semiconductor manufacturer with over 80,000 different parts and a global supply chain onsemi serves tens of thousands of customers across hundreds of markets.

5G & Cloud
Internet of Things
& Defense

Our History

Through both acquisition and robust internal development, onsemi has achieved leadership positions in several markets and technologies that fuel its growth, including automotive, industrial, and cloud power. In 2021, to better reflect its broad technology portfolio, differentiated product lines, and market leadership, ON Semiconductor rebranded itself as onsemi.

July 4, 1999

Spin-Off from Motorola

April 28, 2000

Initial Public Offering (IPO)

September 19, 2016

Fairchild Semiconductor Acquisition

Though there is a new look and feel, the company’s roots are foundational. In 1999, Motorola spun off its standard products semiconductor business into an independent company called ON Semiconductor. Motorola had been a pioneer in transistors, especially for commercial applications. In fact, a Motorola transponder relayed the first words from the moon to Earth in July 1969. Motorola also pioneered the automotive electronics industry, from the first mobile radios in police cars in the 1940s to automotive electric controls and semiconductors in the 1970s.

Fairchild Semiconductor

However, Motorola wasn’t the only industry pioneer to provide the foundation for the modern-day onsemi. In 2016, onsemi acquired Fairchild Semiconductor to become a top semiconductor manufacturer. Fairchild was founded in 1957 to build transistors out of silicon rather than the more common germanium. It also pioneered the planar process, making transistors more easily, at a lower cost, and with higher performance and reliability. This planar process led Fairchild to develop the first commercially viable integrated circuit in 1960, which became the foundation for many of the innovations we enjoy today.

The "Traitorous Eight" Develop a Method of Mass Producing Silicon Transistors
Monolithic Integrated Circuit Patented

Industry’s first integrated circuit available as a monolithic chip

The US Patent Office Issues Robert Noyce a Patent

April 25, 1961, Noyce Awarded Patent For "Integrated Circuit"

onsemi and our ancestors have been changing the world for the last 60 years, and our intelligent technologies will continue to build a better, more sustainable future.

Our Acquisitions

Fairchild and Motorola served as the foundation for the technology industry that we know today. Almost every technology company currently in existence can trace its roots back to one of these pioneers. However, not only does onsemi combine the heritage of industry giants Motorola and Fairchild, but also Cherry Semiconductor, AMI Semiconductor, SANYO Semiconductor, Aptina Imaging Corporation, SensL Technologies and many others.

  • 2000

    Cherry Semiconductor


    LSI Logic Design and Manufacturing Facility Gresham, Oregon


    ADI Voltage Regulation and Thermal Management Group

  • 2008

    AMI Semiconductor


    Catalyst Semiconductor


    Pulsecore Semiconductor


    California Micro Devices


    Sound Design Technologies

  • 2011

    SANYO Semiconductor


    Cypress Image Sensor Business Unit

  • 2014

    Aptina Imaging Corporation


    Truesense Imaging, INC.



  • 2016

    Fairchild Semiconductor


    IBM mmWAVE Advanced Sensor Design Center

  • 2018

    SensL Technologies



Our Commitment

onsemi’s commitment to ethical, environmentally sustainable, and responsible business practices is unmatched, but don’t just take our word for it. Here are only a few of the latest awards that we have received for our efforts:

World Finance awarded onsemi its Most Sustainable Company in 2020 and 2021 in the semiconductor industry.

Visit World Finance

Ethisphere’s has recognized onsemi with World’s Most Ethical Companies® for six years in a row.

Visit Ethisphere

In 2020, EcoVadis awarded onsemi with its highest level of recognition, platinum.

Visit EcoVadis

In December of 2020, onsemi was named to Dow Jones Sustainability Index for the third year in a row.

Visit Dow Jones Index

onsemi was recognized on Barron’s 100 “Most Sustainable Companies” for four years in a row.

Visit Barron’s

onsemi is a full member of the Responsible Business Alliance.

Visit Responsible Business Alliance

Contact Us

  • 5701 North Pima Road
  • Scottsdale, AZ 85250 USA
Phone number
  • +1 (602)-244-6600
Product Inquiries
  • +1 (888)-743-7826

Our Global Locations

onsemi has design, solution engineering (SEC), manufacturing, sales, and support locations in countries worldwide. Learn more about our facilities and the cities our employees call home.

All Locations