Applied Power Systems produced this high voltage solid state switch by integrating standard / off-the-shelf products, including the BAP-1289 HV SCR Gate Driver Board, high voltage SCR semiconductor stack assembly and HV clamping system that minimizes both electrical and thermal resistance while ensuring the semiconductor maintains intimate contact with the heatsink and bus bars to achieve maximum performance from the devices. The unit is capable of switching 10,000 amps at 18,000V in pulsed operation and has been used in applications ranging from pulsing lasers to firing plasma injectors.