Peak pulse handling — what the 14.8 A rating means
The 1.5SMC75A: The 1500 W peak pulse power rating follows from this: 14.8 A × 103 V clamping = 1524 W, consistent with the listed 1500 W (1.5 kW) figure. When selecting a TVS for a power supply bus or motor drive input, the 10/1000 µs rating is the governing surge-survivability number, not a raw power figure.
How the standoff and clamping voltages set protection headroom
The reverse standoff of 64.1 V defines the continuous working voltage the diode blocks in normal operation. The breakdown minimum of 71.3 V is where conduction begins, and the clamping maximum of 103 V at 14.8 A is where the device limits voltage under a full-rated surge event — a 31.7 V clamping margin above the standoff. For a 72 V nominal bus this gives roughly 40% headroom above the working voltage before the TVS enters conduction.
Temperature grade and the DO-214AB package
The DO-214AB (SMCJ) package is the standard SMC footprint for this power class — compatible with standard solder profiles and reflow-capable board assembly. Surface-mount termination supports automated pick-and-place.