Okmetic

Okmetic is a silicon wafer manufacturer founded in 1985 as a joint venture between Nokia and Outokumpu, headquartered in Vantaa, Finland, and owned by China’s National Silicon Industry Group (NSIG) since 2016. It supplies specialty wafers to semiconductor and MEMS manufacturers that need customized substrates rather than standard commodity silicon.

The company produces 150-200 mm wafers in-house, including high-resistivity RFSi wafers for RF applications, silicon-on-insulator (SOI) wafers, MEMS wafers, power device wafers, patterned and through-silicon-via (TSV) wafers, plus epitaxial wafers, and coordinates 300 mm wafer supply through manufacturing partners. Its customers are established semiconductor manufacturers producing MEMS, sensors, RF filters, power devices and mixed-signal ICs for consumer electronics, automotive, industrial and data center applications, supported by its expanded Vantaa fab.

1. High-resistivity RFSi wafers: Substrates optimized for RF filter and front-end module manufacturing.

2. Silicon-on-insulator (SOI) wafers: Substrates used for power, RF and mixed-signal chip designs.

3. MEMS wafers: Customized silicon for sensors and micro-electromechanical device production.

4. Through-silicon-via (TSV) and patterned wafers: Substrates supporting advanced packaging and sensor integration.

5. Power device wafers: Silicon tailored for power semiconductor manufacturing processes.

6. Vantaa fab capacity: In-house 150-200 mm wafer production recently expanded for volume supply.