Power Assemblies and Controllers

Circuit Protection


GD Rectifiers is the UK's largest independent distributor of semiconductors, they have been servicing engineers, buyers and procurement specialists in the power electronics industry for over 50 years.

As an official distributor for some of the industry's largest semiconductor brands, they offer an extensive range of diodes, thyristors, rectifiers, MOSFETs and IGBTs with over 170,000 semiconductor components in stock from the world's leading manufacturers, including IXYS, IXYS UK Westcode, Semikron, Electronic Devices Inc and Dynex Semiconductors. 

Semiconductors by GD Rectifiers

They specialise in sourcing both everyday semiconductors and obsolete and hard to find semiconductor components. They offer modern day alternatives to obsolete semiconductors and they also manufacture a number of flat base conversion kits used to replace obsolete flat based diodes and thyristors.

GD Rectifiers constantly update their product range so that buyers, procurement specialists and electronic design engineers can purchase stock easily, quickly and at competitive prices. Alongside semiconductors they can support you in a variety of design and build aspects, including heatsinks, power assemblies, capacitors, high voltage diodes and obsolete semiconductors. 


IXYS Corporation is a global supplier of power management semiconductors, their range of IGBTs, MOSFETs, rectifiers, diodes and thyristors provide improved efficiency and reduced energy costs in a wide range of power system applications. 

IXYS Modules by GD Rectifiers




Rectifier Bridges 

Silicon Carbide Power MOSFETs

Silicon Carbide Schottky Diodes

Switchable Current Regulators


AC Controlled Thyristors

Thyristor Module Accessories


IXYS UK Westcode  

GD Rectifiers is an official distributor for IXYS UK Westcode, formerly known as Westcode until IXYS Corporation acquired the company back in 2002. IXYS UK Westcode specialise in the design and manufacture of industry-leading power semiconductors including an extensive range of diodes, thryistors and press pack IGBTs.

IXYS UK Westcode by GD Rectifiers


Distributed Gate Thyristors

Fast Turn-off Thyristors


GTO Thyristors

Medium Voltage Thyristors



Semikron is a global manufacturer of power semiconductor components with their headquarters situated in Nuremberg, Germany. GD Rectifiers has been an official distributor for Semikron for over 50 years, providing customers with short lead times, access to the complete Semikron product range and competitive pricing across all products.

 Semikron Product range by GD Rectifiers




Rectifier Bridges

Silicon Carbide Power Modules

Silicon Carbide Power Modules (Hybrid) 


Thyristor Diode Modules


Electronic Devices Inc  

Electronic Devices Inc offer an extensive selection of bridges, rectifiers and high voltage fast recovery diodes. Based in New York,  their engineering and manufacturing experience has enabled them to create many new and patented designs. EDI's range features high thermal efficiency packaging, more efficient junction avalanche characteristics and 200°C operation capability. Over the years Electronic Devices Inc has developed ultrasonically cut round chips that reduce corona leakage, increasing reliability.

Electronic Devices Inc products by GD Rectifiers





Dynex has a rich history in the design, development and production of high power semiconductors and offer a robust range of high power IGBTs and FRD Modules designed to suit a wide range of applications. Throughout the years, Dynex's semiconductors have been applied to traction, power quality renewable energy and science projects. Their semiconductor operations is located in Lincoln (UK) specialising and bringing customers the latest technology in semiconductors, power assemblies and electric vehicle vehicle systems, and the company has recently celebrated their 60th anniversary.

Dynex Semiconductors by GD Rectifiers

FRD Modules

High Power IGBT Modules


For further information on semiconductors please call: 01444 243 452 or email: .(JavaScript must be enabled to view this email address) 

GD Rectifiers Ltd

GD Rectifiers design and manufacture Selenium and Silicon Rectifiers, Suppressors, Converters, Inverters and Regulator Products for industrial power control applications.

They are the UK's leading Distributor of power electronic components and hold extensive stock of Diodes, Thyristors, IGBTs and MOSFETs from the world's leading semiconductor manufacturers.

Further information:

You can find further information on GD Rectifiers Ltd using the following links:

Tel: 01444 243 452

Fax: 01444 870 722

Email: enquiries@gdrectifiers.co.uk