Originally a subsidiary of Ferranti Semiconductor, Zetex took its name from Ferranti's ZTX series of bipolar transistors. It was sold to Plessey in 1988, then bought out by management in 1989 to become Zetex plc. At this point it owned two manufacturing sites in Oldham: Gem Mill and Lansdowne Road. It then became a subsidiary of Telemetrix plc, until in 2004 it changed its name to Zetex Semiconductors plc. In 2008 it was acquired by Dallas-based Diodes Incorporated.
London Stock Exchange symbol: ZTX
- Corporate overview Archived May 17, 2008, at the Wayback Machine., zetex.com
- "Zetex brings Oldham fabs together again", Electronics Times, July 27, 1998
- Another version of the corporate overview Archived July 5, 2008, at the Wayback Machine., zetex.com
- "Diodes Incorporated Closes Acquisition of Zetex plc"[permanent dead link], Zetex press release