Package and board integration — DO-214AB (SMC)
The 1.5SMC43CAHM3_A/H comes in the DO-214AB (SMC) surface-mount package, a standard footprint for 1500 W-class TVS diodes.
Clamping performance and what it means for the rail
With a 36.8 V reverse standoff voltage, this bidirectional Zener-type TVS protects a nominal 36 V rail — typical for 24 V automotive systems with load-dump transients or telecom 48 V battery feeds. That 59.3 V clamp ceiling means downstream components rated for 60 V or higher survive the surge without secondary protection.
Automotive qualification and deployment context
This part carries AEC-Q101 qualification, the automotive-grade stress and reliability standard for discrete semiconductors. The TransZorb series is Vishay's branded TVS platform, optimized for fast response to transients in automotive and telecom applications.