POWER TRANSISTOR HEAT-SINK SECURING OPERATIONAL STABILITY USING PCB

摘要

PURPOSE: A power transistor heat-sink securing an operational stability using a PCB(Printed Circuit Board) is provided to simply fix lead wires of a transistor and a fuse thereby achieving a safe operation. CONSTITUTION: Lead wires of a power transistor(20) is fixed apart from a power transistor heat-sink(10) at a predetermined distance. A temperature sensing fuse(50) is attached closely to a power transistor heat-sink(10) by a PCB(60). A seating groove(14) for receiving a part of the temperature sensing fuse(50) is formed at the power transistor heat-sink(10). The heat-sink(10) is coupled to the PCB(60) while spaced apart therefrom. The heat-sink(10) is closely fixed to the power transistor(20). The lower terminal of the temperature sensing fuse(50) is fixed to the PCB(60). The upper terminal of the fuse(50) is fixedly connected to a fuse terminal(53) which is closely fixed to the power transistor heat-sink(10).