1500 W peak pulse — what it means for your rail
The 1.5SMC11AHM3_A/I is a 1500 W (1.5 kW) peak pulse power TVS diode from Vishay's TransZorb® series, rated for a 10/1000 µs waveform. That 1500 W rating means it can clamp a 96.2 A surge down to 15.6 V, protecting a 9.4 V nominal rail from transients like load dump or inductive kickback in automotive and telecom equipment.
AEC-Q101 — automotive-grade transient protection
AEC-Q101 qualification means this diode passed the automotive stress tests: temperature cycling, high-temperature reverse bias, and ESD robustness per the standard. It operates from -65°C to 150°C junction temperature, covering under-hood and cabin environments without derating concerns at the top end. The DO-214AB (SMC) package is a standard surface-mount footprint for high-power TVS diodes. The copper tab on the bottom side conducts heat to the PCB pad — a generous copper pour under the part improves thermal performance during repetitive surge events.