Package and board-fit for the DO-214AB (SMC) footprint
The 1.5SMC220AHE3/57T: This is a standard JEDEC footprint shared across the 1.5SMC series, so the copper land pattern is consistent whether you are sourcing the AEC-Q101 automotive grade or the commercial variant. The 185 V reverse standoff voltage means this device starts conducting above that DC bias — it protects a 150–180 V rail from transients without loading it during normal operation.
The 1.5SMC220AHE3/57T is listed as Active by Vishay.
