1500 W peak pulse — what it means for the BOM
The 1.5SMC220AHE3_A/H: That 1500 W rating is the maximum power the device can absorb during a transient without failing — it sets the surge-handling capability for the protection stage. For a 24 V automotive bus with a 185 V standoff, this part clamps at 328 V max, passing 4.6 A peak pulse current.
Package and board-fit: DO-214AB (SMC)
The package is a standard JEDEC outline for 1500 W TVS diodes — the same footprint used across the 1.5SMC series, so a single PCB land pattern serves the whole family. Tape & Reel packaging suits automated pick-and-place assembly.