Company profile

IXYS UK Westcode

Chippenham designer and manufacturer of high-power diodes, thyristors and press-pack IGBTs within Littelfuse.

Company overview

IXYS UK Westcode Ltd designs and manufactures discrete power semiconductors and silicon assemblies at Chippenham, Wiltshire, continuing a British power-semiconductor lineage that stretches back to the Westcode business established in the early twentieth century. Its certified scope at Chippenham covers the design and manufacture of semiconductors, and its product literature specifies high-power rectifier and fast-recovery diodes, phase-control and other thyristors, and press-pack IGBTs. These devices are used in industrial power conversion, traction, energy transmission and other high-power applications where robustness and long service life are essential. The business operates within Littelfuse's power-semiconductor portfolio following the acquisition of IXYS, and the Chippenham site remains one of the UK's few volume manufacturers of high-power discrete semiconductor devices.

Semiconductor activity

Primary capability: Power Semiconductors.

Technologies and capabilities

High-power diodes
Thyristors
Press-pack IGBTs
Power semiconductor fabrication

Rectifier diodes; Fast-recovery diodes; Phase-control thyristors; Press-pack IGBTs; Silicon assemblies

Markets served

Industrial power conversion
Traction
Energy transmission
Power supplies

UK presence

Chippenham, South West. Part of the Bristol / South West cluster.

Sources and verification

Last verified: 2026-11-02