Patent ID: 6894524

Claim:
A method for testing an integrated circuit package having a plurality of daisy chain loops, each daisy chain connected to a pair of package pads, wherein adjacent daisy chain loops are oppositely biased, the method comprising: (a) forming a first plurality of gangs of electrically coupled daisy chain loops having a first bias; (b) forming a second plurality of gangs of electrically coupled daisy chain loops having a second bias; (c) individually coupling each one of the first plurality of gangs to an electrical measurement device; (d) electrically coupling the second plurality of gangs in common, forming a common gang, and coupling the common gang to the electrical measurement device; and (e) using the electrical measurement device to indicate whether there is any leakage between one or more of the first plurality of gangs and the common gang, thereby eliminating the need to use an ATE tester and device under test (DUT) circuit board to perform reliability tests.