Power Assemblies and Controllers

IXYS UK Westcode

GD Rectifiers is IXYS UK Westcode’s official UK distributor. We stock a wide range of their components, heatsinks and hardware. For a quote or any technical assistance, please call the office on 01444 243452 or email at .(JavaScript must be enabled to view this email address).




IXYS UK Westcode Ltd. offers a broad range of diodes products including rectifier diodes, fast recovery, soft recovery, extra fast recovery, and high power Sonic FRD’s.
Rectifier Stud:            428Amps to 735Amps, 1200-3200V
Rectifier Capsule:         507Amps to 9830Amps, 200-5600V
Fast Recovery Capsules:        588Amps to 3770Amps, 200-4500V
Soft Recovery Stud:         130Amps to 336Amps, 1200-2500V
Soft Recovery Capsules:     225Amps to

2413Amps, 800-6000V
Extra Fast Recovery Capsules:    240Amps to 1346Amps, 800-5500V
High Power Sonic FRD Capsules:    208Amps to 4080Amps, 1400-4800V    


IXYS UK Westcode Ltd. offers a board range of thyristor products to suit your application. These include phase control, fast turn-off, distributed gate, medium voltage and asymmetric thyristors. This range include the new WESPACK outline for phase control thyristors, with voltage ratings up to 2.2kV, giving maximum power rating for weight and volume, without compromising on quality and reliability.
Phase control Studs:        131Ams to 416Amp, 400-1600V
Phase control Capsules:        255Amps to 6974Amps, 800-4500V
Fast Turn-Off Studs:        128Amps to 431Amps, 400-1200V – 10 to 30uS
Fast Turn-Off Capsules:        295Amps to 1007Amp, 400-1200V – 10 to 30uS
Distributed Gate Capsule:      472Amps to 4001Amps, 800-4500V – 10 to 300uS
Medium Voltage Capsules:    349Amps to 3503Amps, 3000-6500V
Asymmetric  Capsules:        516Amps and 1237Amps, 2400-2800V



IXYS UK Westcode Ltd. offers a range of thyristor/diode modules for isolated heatsink applications and has UL Certification for most modules. They offer the standard circuits, duel diode, duel thyristor, single thyristor or diode, common cathode, common cathode, and water cooled versions.
Duel Thyristor modules:     327Amps to 719Amps, 1200-3600V
Duel Diode Modules:         600Amps to 1080Amps, 1400-3600V
Thyristor Diode Modules:     327Amps to 719Amps, 1200-3600V
Single Thyristor Modules:     765Amps to 830Amps, 1400-2200V
Single Diode Modules:         1520Amps, 1400-2200V


IXYS UK Westcode Ltd. is also a pioneer of press-pack IGBT technology, offing class leading devices with voltage ratings of 2.5kV (1.25kV DC Link) and 4.5kV (2.8kV DC link) and now has also just introduced its first 6.5kV press-pack IGBT. The construction of these devices is totally free from wire and solder bond which all but eliminates the problems of mechanical fatigue associated with conventional IGBT modules.
Details on ratings available on request.


If you want to email your enquiry, please click here or call the office on 01444 243452.

IXYS UK Westcode

IXYS UK Westcode, formally Westcode Semiconductors has been at the forefront of power semiconductor design. Supporting a truly worldwide and incredibly diverse market place, IXYS UK Westcode has evolved into one of the worlds leading manufacturers of high power semiconductors. 

Further information:

You can find further information on IXYS UK Westcode using the following links:

IXYS UK Westcode Website