Welcome to Semefab

Semefab is a Silicon wafer foundry operation manufacturing microelectronics and Micro Electro-Mechanical Systems (MEMS) in Glenrothes, Scotland.

Semefab operates a volume foundry business model and technology commercialisation business model and can therefore support its customers throughout the full technology cycle and their volume needs.

In addition to its fabrication capability, Semefab operates its own test floor supporting wafer test and package test.

Supporting an extensive process portfolio of MEMS; MOS; Bipolar; Opto-CMOS; ASIC and Discrete technologies, Semefab supplies Silicon wafers, die and packaged devices to the market.

As a global foundry, Semefab exports >74% of its fabricated product and ships more than 200 million die per year.

MEMS Foundry

Semefab's MEMS fab infrastructure is completely autonomous to both fab1 & fab3 with independent air handling and waste streams thus eliminating any risk of cross-contamination. Fab2 is an ISO9001 & ISO14001 accredited environment.


MOS/Bipolar Foundry

Semefab supports 6" & 4" MOS/Bipolar volume foundry utilising both its Fab 3 & Fab 1 respectively. With a diverse process portfolio and a long successful history, Semefab's MOS/Bipolar foundries are the industry's low-risk, long-term foundry partner.


MEMS Industry Group