The 1.5SMC16AHM3_A/H is a 1500 W Zener TVS diode from Vishay's automotive-grade 1.5SMC TransZorb series, rated for a 13.6 V reverse standoff and clamping at 22.5 V with a 66.7 A peak pulse current (10/1000 µs waveform). That 1500 W rating means it absorbs a single 1.5 kW transient without failing — enough to clamp a 24 V load-dump spike on an automotive CAN bus or a telecom line card before the downstream IC sees overvoltage.
AEC-Q101 — the under-hood reliability gate
AEC-Q101 qualification means this TVS passed the automotive stress suite: high-temperature reverse bias, temperature cycling, and ESD robustness per the standard. The -65°C to 150°C junction range covers engine-bay and cabin electronics. Single unidirectional channel in a DO-214AB (SMC) package — the large copper tab on the cathode side sinks heat into the PCB pad, so the 1500 W pulse derating follows the junction temperature curve.
Active lifecycle — no last-time-buy scramble
Listed as Active in production — no NRND or EOL flag.