This paper presents the success story of the learning process by reporting four cases using four different failure analysis techniques. The cases covered are IDDQ leakage, power short, scan chain hard failure, and register soft failure. Hardware involved in the cases discussed are Meridian WS-DP, a wafer-level electrical failure analysis (EFA) system from DCG Systems, V9300 tester from Advantest, and a custom cable interface integrating WSDP and V9300 with the adaption of direct-probe platform that is widely deployed for SoC CP test. Four debug cases are reported in which various EFA techniques are proven powerful and effective, including photon emission, OBIRCH, Thermal Frequency Imaging, LVI, LVP, and dynamic laser stimulation.

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