1500 W peak pulse — the clamp that protects 185 V rails
The 1.5SMC220CAHE3/57T: AEC-Q101 qualification means this part is screened for automotive-grade reliability — temperature cycling, high-temperature reverse bias, and ESD robustness per the automotive discrete semiconductor standard.
The SMC body (also known as SMCJ) is larger than the SMA/SMB siblings — the extra copper area on the cathode tab (the backside of the package) lowers the thermal resistance to the board, which matters when the 1500 W pulse raises the junction temperature in a single event. Supplied on Tape & Reel (TR), it is pick-and-place ready for high-volume assembly.
The base product number 1.5SMC220 covers the full family of unidirectional and bidirectional variants at this voltage. The HE3 suffix indicates AEC-Q101 automotive qualification; the /57T designates the 7-inch reel tape-and-reel packaging.