Zener TVS clamp for 48V rails
The 1.5SMC56AHM3/H: Its 47.8V reverse standoff voltage protects nominal 48V rails, with a 53.2V minimum breakdown ensuring the avalanche triggers before the line sees damaging overvoltage.
Automotive-grade screening and temperature range
AEC-Q101 qualification means this part passed the automotive stress suite: high-temperature reverse bias, temperature cycling, and ESD robustness per the standard. The copper pad area under the cathode tab sets the thermal impedance; a 1-ounce copper pour matching the tab area keeps the junction-to-board thermal resistance low enough to absorb repeated pulses without derating.