Abstract

Wire Bond Shear (WBS) test is a method for evaluating the strength of a ball bond, to complement wire pull test. In foundry, wafer-level (WLR) WBS provides a quick way to demonstrate the integrity of metal bond pad, backend scheme as well as bond or via design. This is a big challenge for WLR WBS outsourcing as many of the factors affecting shear strength lying on the wire bonding parameters and shear test setup. This paper presents the outsourcing experiences of WBS tests and good shear strength was achieved from the outsource laboratory.

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