Electrostatic discharge (ESD) testing for human body model tests is an essential part of the reliability evaluation of electronic/electrical devices and components.However, global environmental concerns have called for the need to replace the mercury-wetted relay switches, which have been used in ESD testers.Therefore, herein, we propose an ESD tester using metal oxide semiconductor-controlled cashel tail bag thyristor (MCT) devices with a significantly higher rising rate of anode current (di/dt) characteristics.These MCTs, which have a breakdown voltage beyond 3000 V, were developed through an in-house foundry.
As a replacement for the existing mercury relays, the proposed ESD tester with the developed MCT satisfies all the requirements stipulated in the JS-001 standard for conditions at or below 2000 V.Moreover, unlike traditional princess polly dresses long sleeve relays, the proposed ESD tester does not generate resonance; therefore, no additional circuitry is required for resonant removal.To the best of our knowledge, the proposed ESD tester is the first study to meet the JS-001 specification by applying a new switch instead of an existing mercury-wetted relay.