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

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


AEI Semiconductors

The BTH name was replaced by Associated Electrical Industries Ltd (AEI) on their products.


Marconi Electronic Devices

Marconi Electronic Systems (MES), or GEC-Marconi, was the defence arm of The General Electric Company (GEC). The factory at Doddington Road had 2 divisions, Microwave(including Hybrid) and Integrated circuits with a Lincoln design centre capable of semi-custom design for large scale integration.


GEC Plessey Semiconductors Ltd.

As a result of various mergers and acquisitions in the electrical engineering industry, the business continued to operate under the name of GEC Plessey Semiconductors.


Mitel Semiconductors

Mitel acquires 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 assets of Mitel Semiconductors.


Dynex Semiconductor Ltd.

Following the acquisition, Dynex Power’s operations in Canada were closed down and all operations of the Dynex Group 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 has just completed manufacturing one of the largest known inverter assemblies to be used as part of a tokamak fusion magnetic confinement system in Oxford, United Kingdom.  

Dynex Fact 3

Dynex Fact 3

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.