1500 W peak pulse — the surge-handling ceiling
The 1.5SMC43CAH: The 36.8 V reverse standoff means it sits across a 36 V rail or a 24 V battery line without leaking appreciably; the 40.9 V minimum breakdown ensures the avalanche triggers before the protected circuitry sees damaging overvoltage.
AEC-Q101 and the -55 to 150°C operating range
Automotive-grade qualification (AEC-Q101) means this TVS is screened for the reliability stresses an under-hood or chassis-mounted ECU sees — temperature cycling, high-temperature reverse bias, and ESD robustness.
Bidirectional single channel — fits AC or bipolar signal lines
A single bidirectional channel clamps both polarities of a transient, which suits AC signal lines, differential pairs, or any rail that swings through zero.