based manufacturer of discrete semiconductor devices such as diodes and transistors . corporate history edit originally a subsidiary of ferranti semiconductor 1 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 . 2 it then became a subsidiary of telemetrix plc until in 2004 it changed its name to zetex semiconductors plc. 3 in 2008 it was acquired by dallas based diodes incorporated . 4 london stock exchange symbol ztx references edit 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 external links edit official website retrieved from https en.wikipedia.org w index.php title zetex semiconductors & oldid 730843259 categories electronics companies of the united kingdomcompanies based in oldham boroughhidden categories articles with wayback machine linksall articles with dead external linksarticles with dead external links from july 2016articles with permanently dead external links navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages add links this page was last modified on 21 july 2016 at 11 57 . text is available under the creative commons attribution sharealike license ; additional terms may apply . by using this site you agree to the terms of use and privacy policy . wikipedia is a registered trademark of the wikimedia foundation inc. a non profit organization . privacy policy about wikipedia disclaimers contact wikipedia developers cookie statement mobile view