PRINTED CIRCUIT BOARD WITH HEAT SINK

摘要

A printed circuit board includes a heat sink and a circuit board. The heat sink includes four magnetic poles extending from four corners of a bottom of the heat sink. The circuit board includes a heat-generating component and four magnetic holders corresponding to the magnetic poles. Each magnetic holder defines an inserting hole to receive a corresponding magnetic pole. The heat sink is fixed on the circuit board and the heat-generating component contacts to the bottom of the heat sink in response to the magnetic poles being inserted into the inserting holes of the magnetic holders.