1500W peak pulse — what the ratings mean for the rail
The 1.5SMC100CA R7G: The 85.5 V reverse standoff voltage means it holds off a nominal 85 V rail without conducting leakage; the 95 V minimum breakdown voltage is the threshold where the device starts to avalanche. For a 72 V or 85 V DC bus — common in telecom rectifiers or industrial power supplies — this part sits just above the rail so it doesn't clip normal operation but catches surges before they reach downstream silicon.
Bidirectional single-channel — polarity agnostic
A single bidirectional channel protects the line against both positive and negative transients — no need to orient the part or use two back-to-back unidirectional devices. This simplifies the PCB layout for AC-coupled signals or bipolar supply rails where the polarity can reverse during a fault.
DO-214AB SMC — standard high-power TVS footprint
The DO-214AB (SMC) surface-mount package is the industry-standard outline for 1500 W TVS diodes. It mates with the same land pattern as other SMC-packaged devices from Vishay, Littelfuse, and ST, so a second-source swap on the same PCB is straightforward if the BOM needs a hedge.