WS Series Wirewound Resistors Bourns WS Series Wirewound Resistors are axial leaded and designed to withstand greater power surge. The resistors range from 1W to 8W and have a resistance range of 15Ω to 3.3KΩ. This new series has been designed to operate at extreme temperatures from -55ºC to +200ºC. It has been designed to withstand the surge from the 1.2/50µs voltage waveform described in IEC 61000-4-5.Learn More