A heat dissipating apparatus (10) for dissipating heat from a heat-generating electronic component includes a heat sink (14), a resilient clipping member (162), and an operating member (164). The heat sink contacts with the heat-generating electronic component, and includes a fin assembly (144) which defines a channel (146) therein. The resilient clipping member is received in the channel of the heat sink for mounting the heat sink on the heat-generating electronic component. The operating member is pivotally mounted to the clipping member. At least one portion of the operating member is mounted between the fin assembly and the clipping member. The at least one portion can move from an unlock position to a lock position to support the clipping member away from the heat-generating electronic component.