Patent ID: 9070671
Filing Date: 2015-06-30
Classification: H01L

Abstract:
1. A method for fabricating a semiconductor assembly, comprising: forming an attachment area and a non-attachment area on a lead finger of a lead frame, the attachment area being more wettable to an electrical coupler than the non-attachment area during reflow, wherein the electrical coupler includes a solder material; contacting an electrical coupler carried by a semiconductor die with the attachment area of the lead finger; reflowing the electrical coupler while the electrical coupler is in contact with the attachment area of the lead finger; and controllably collapsing the electrical coupler to establish an electrical connection between the semiconductor die and the lead finger of the lead frame; and wherein the method further includes attaching the electrical coupler to a contact pad of the semiconductor die; forming the attachment area and the non-attachment area includes: controllably collapsing includes: the method further includes at least partially encapsulating the semiconductor die, the electrical coupler, and the lead finger with an encapsulant.