50 Years of History

Our semiconductor operations were first established in 1956 when our first owners, British Thomson Houston Ltd (BTH) purchased land and buildings in Lincoln. BTH was a subsidiary of the Associated Electrical Industries Group and operated world leading semiconductor research and manufacturing units in the heart of England at Rugby and Leicester. Following the successful development of new silicon semiconductor power device technologies, and responding to a growing market demand for power electronic equipment, BTH had decided to move to new premises in order to expand its production, and selected Lincoln UK, for its main production location.

Throughout the past 50 years our operations at Lincoln have remained the centre for silicon high power semiconductor devices, and subsequently silicon on sapphire, product design, development and manufacture. Beginning with the transfer of know how from BTH, the Lincoln operation has acted as a magnet capturing the best in power semiconductor technology from other well known groups including AEI, GEC, Marconi, and SGS-Thomson.

1956 BTH established a semiconductor manufacturing facility at Lincoln
1957 Production commenced in Lincoln
1963 First UK fully diffused thyristors produced at Lincoln.
1963 Name changed to Associated Electrical Industries (AEI)
1966 Transfer of semiconductor research team from AEI Rugby
1975 Transfer of semiconductor activities from the GEC Central Research facility to Lincoln
1979 First HVDC thyristors in production (56mm)
1980 Name changed to Marconi Electronic Devices Ltd
1981 Second facility opened at Doddington Road, Lincoln
1983 First GTO thyristors in production on 75mm silicon
1984 First HVDC thyristors in production on 100mm silicon
1985 Silicon-on sapphire IC products in production
1989 Acquired the high power semiconductor activity of SGS-Thomson, France
1990 Name changed to GEC Plessey Semiconductors
1996 New Power semiconductor wafer fabrication facilities established at Doddington Road
2000 Lincoln Business acquired by Dynex Power Inc of Canada
2007 50th year of semiconductor production in Lincoln

Today as Dynex Semiconductor Ltd, a wholly owned subsidiary of Dynex Power Inc., we are proud to have maintained and continued to develop our operations in Lincoln as an independent supplier of specialist high power semiconductor, silicon-on-sapphire, and power electronic products. From our base in Lincoln we have designed, developed and manufactured products for use in every corner of the world and beyond.

We have found Lincoln a very successful location, have benefited from many years of local service from our highly experienced local work force, and from the support of a strong group of local suppliers.

If you are new to Dynex I would invite you to join the growing number of customers that we have served, over the past 50 years, and benefit from the depth and breadth of experience and knowledge that our products will bring to your business.

For our existing customers we thank you for using Dynex. We are pleased to continue to serve you and hope that you may grow and prosper with Dynex in the future.

With my very best regards

Paul Taylor
Chief Executive Officer
Dynex Semiconductor Ltd


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