Patent ID: 8574961

Claim:
A method of making a semiconductor device, comprising: providing a semiconductor die having first and second opposed surfaces, wherein the semiconductor die has a solderable metal layer formed overlying the second surface; providing a tape having an adhesive surface and a hole extending completely through the tape; mounting the semiconductor die on the adhesive surface of the tape, wherein the semiconductor die covers the hole and a portion of the solderable metal layer is exposed through the hole; drawing a vacuum through the hole to secure the semiconductor die; attaching a wirebond to the first surface of the semiconductor die and to a lead disposed on the tape while drawing the vacuum; forming an encapsulating layer overlying the wirebond, at least a portion of the lead and at least a portion of the semiconductor die while the tape is attached to the solderable metal layer; and removing the tape so that surfaces of the lead and the solderable metal layer are exposed to provide package leads, wherein the exposed solderable metal layer provides an electrical contact for the semiconductor device when the semiconductor device is mounted to an electronic system.