Distributed gate thyristors   Extra fast diodes   Fast recovery diode capsules   Fast recovery diode studs   Soft recovery diodes   Fast turn-off thyristor capsules   Fast turn-off thyristor studs       Asymmetric thyristors NEW     High Power Sonic FRD's NEW      Westcode Semiconductors, Langley Park Way, Langley Park, Chippenham, UK SN15 1GE