What We Do


Dynex designs and manufactures high power semiconductors for customers around the world including the European, US and the rapidly growing Far Eastern markets. The Power Semiconductor operation is located in Lincoln, England, manufacturing a range of high power Module and Bipolar discrete products that include insulated gate bipolar transistor (IGBT) and diode modules, IGBT/FRD die, fast diodes, fast thyristors, gate turn-off thyristors, rectifier diodes, phase control thyristors and transistors.


Offering high power IGBT modules and bipolar products Dynex manufacture highly robust and reliable modules that are in service in over 60 different countries around the world.

Power Assemblies

Power Assemblies

Providing support for customers requiring more than the basic semiconductor by utilising the skills of our power electronics, mechanical and electronic engineers. The Dynex team have direct access to the company’s application, test and product design personnel to produce the optimum solution for your requirements.

Electric Vehicle Systems

Electric Vehicle Systems

Efficient electric drive train solutions with the ability to provide standard and custom inverter and charging systems in 60 & 85kW configuration. Manufacturing optimised IGBT modules designed for efficient operation with a fully integrated cooling loop to enhance performance.

Our Journey

Celebrating its 60th anniversary in 2017, Dynex has a long and proud history of manufacturing and providing semiconductor products to the world. 


British Thomson-Houston Company Limited ("BTH")

A power semiconductor business was opened in Lincoln by BTH in 1956 manufacturing some of the first silicon-based semiconductor components in the world.


AEI Semiconductors Ltd

BTH was acquired by Associated Electrical Industries Ltd (AEI). The Lincoln subsidiary business of AEI was called, AEI Semiconductor Ltd. AEI was subsequently acquired by the General Electronic Company ("GEC").


Marconi Electronic Devices Ltd

The power semiconductor business AEI Semiconductor Ltd was merged with GEC's other electronic component manufacturing businesses and named Marconi Electronic Devices Ltd.


GEC Plessey Semiconductors

As a result of GEC acquiring the Plessey Company, the business operated under the name of GEC Plessey Semiconductors.


Mitel Semiconductor Ltd

Mitel acquired the GEC Plessey Semiconductor Group. The combined semiconductor business ranks Mitel among the top ten networking companies in the world and provides the ability to produce bipolar, Complementary Metal Oxide Semiconductor (CMOS) and optoelectronic components.


Dynex Power Inc.

In 2000, Dynex Power Inc, a small, publicly quoted Canadian company, formed Dynex Semiconductor Ltd to purchase the Lincoln Business Unit assets of Mitel Semiconductor Ltd.


Dynex Semiconductor Ltd.

Following the acquisition, Dynex Power’s operations in Canada were closed down and all operations of Dynex Power Inc were carried out in Lincoln as part of Dynex Semiconductor Ltd.


Zhuzhou CSR Times Electric Co. Ltd

In 2008, Zhuzhou CSR Times Electric Co. Ltd, a company based in the Hunan Province of The People’s Republic of China bought 75% of the share capital of Dynex Power Inc. CSR would later rebrand as CRRC Times Electric and is quoted in Hong Kong but is majority owned by the CRRC Group also based in Hunan Province in The People’s Republic of China.


The Dynex Vision

Dynex, in partnership with CRRC Times Electric, will be a leading international, top three high power semiconductor business.

Global Reach

Dynex now provides our high power semiconductor devices and assemblies into over 60 countries around the world. 

Dynex Fact 1

Dynex Fact 1

In 2016, Dynex invested over £1 million GBP to create a purpose-built electric vehicle systems design centre, development, and test laboratory. 

Dynex Fact 2

Dynex Fact 2

Dynex products throughout the years have been applied in projects that vary from Traction, Power Quality through HVDC, Renewable Energy production, to helping science advance.