The ILQ55 is a type of power field effect transistor (PFET) manufactured by Vishay Intertechnology. It is a N-Channel Enhancement Mode MOSFET with a high density, surface-mount package, designed for switching and linear applications. It has a maximum, drain-source voltage rating of 55 volts, a maximum drain current of 11 amperes and a low gate-source threshold voltage. Its ruggedness and simple gate drive requirement make it a suitable device for use in many applications, such as power switching circuits, power radios, and DC-to-DC converters.