These MOSFET switches are designed for general high voltage switching applications such as pockels cell drivers, detection and acceleration grid drivers, piezo drivers, MCP/SEV pulsers and DC/DC converters. The switching modules incorporate all features of the well known HTS switch family: Easy handling, high reliability, low jitter and precise switching. In contrast to conventional high voltage switches like spark gaps, electron tubes, gas discharge tubes and mechanical switches, HTS transistor switches show very stable switching characteristics independent of temperature and age. The mean time between failures (MTBF) is by several orders of magnitude higher than that of the classical HV switches.