Skip to content

Cohu is a leading supplier of test handling, burn-in and thermal solutions used by the global semiconductor industry, microwave communications and closed-circuit television equipment.

Delta Design's engineering and manufacturing plant Cohu, Inc. is the result of an evolution from a tiny laboratory partnership created in 1945. This partnership was incorporated as Kalbfell Laboratories, Inc., in 1947. In September 1954 the corporate name was changed to Kay Lab.

In June of 1956 the company issued 400,000 additional shares in its first public financing. In 1957 Kay Lab was liquidated and all of the assets and liabilities of Kay Lab were acquired by Cohu Electronics, Inc., a Delaware corporation. In 1972, the name Cohu Electronics, Inc. was changed to Cohu, Inc.

Company Business

Cohu's business can be separated into three categories: Semiconductor Equipment, Microwave Communications and Television Cameras

Cohu SEG

The leading supplier of test handling, burn-in, thermal subsystems and MEMS test solutions used by the global semiconductor industry.

Learn More


Broadcast Microwave Services (BMS) manufactures microwave communication equipment and support items.

Learn More


The leading designer and manufacturer of closed circuit television (CCTV) cameras and systems for more than 40 years.

Learn More