About Us

We are a global leader in test handling, thermal subsystems, package inspection, contactors and MEMS test solutions used by the semiconductor industry. We provide our customers with outstanding products and services that reflect our commitment to operational excellence, innovation and market leadership.

Delta Design's engineering and manufacturing plant

Cohu, Inc. was founded in 1957 and is comprised of three business units, Delta Design, Rasco and Ismeca. 

Delta Design has been part of Cohu since 1967 and pioneered pick-and-place handler technology in the 1980s. The company rapidly grew to become the industry leader by the early 1990s. In early 2000, Delta Design developed the first solution for actively controlling temperature during test of power dissipative ICs, thus solving a critical yield problem when testing high-end microprocessors. 

The acquisitions of Rasco in 2008 and Ismeca in 2012 extended the product portfolio to include gravity, strip and turret handling equipment and added new critical technologies to the company in contactors, MEMS and LED test, and vision inspection. Today, the company offers the broadest portfolio of enabling technologies in the industry that can be integrated in any of its handler platforms to optimize semiconductor test and solve some of the most challenging customer requirements.