Discrepant ESD-CDM Test System and Failure Yield Prediction between ESD Association and JEDEC Standards

CDM test system and verification method of ESDA and JEDEC standards have been studied. There are several different items. They can be categorized into 5 major items, which are charging system, discharging system, verification module, waveform verification, and classification level. Regarding waveform verifications at each stress level, ESDA system provides higher peak current whereas lower rise time and lower full width at half maximum, compared to JEDEC system. It implies that ESDA standard provides higher inductance in a discharge system and higher discharge energy, which make it more severe system. The current continuously increases with the stress level. The linear relationship of stress conditions by these standards can be obviously observed. The electrical failure yield of each standard system is then predicted by a stress condition of the other system.