GW13B is a type of Shunt Resistor (SR) Passives. These components are passive resistors which have been designed to be used as a current regulating device in power systems. They are typically used to control the current in a circuit and can be used as a bypass resistor, inrush limiter, or as a current limiting device. SR passives are highly reliable, low thermal resistance and offer very low resistance values compared to other types of resistors available. As such, these components are commonly used in power systems, dc power converters and various other applications.