1500 W peak pulse, 7 V standoff rail
The SMCJ7.0A-13: It clamps a 7 V nominal rail at 12 V maximum, shunting up to 125 A of surge current away from the protected circuit.
Clamping voltage and breakdown margin
Reverse standoff voltage is 7 V, with a minimum breakdown of 7.78 V — the device starts conducting just above the normal operating rail, leaving the line undisturbed during steady-state conditions. The 12 V maximum clamp at 125 A Ipp sets the voltage stress the downstream components must survive during a transient event. The DO-214AB (SMC) body handles the 1500 W pulse without package cracking, provided the PCB copper area matches the datasheet's recommended footprint for thermal dissipation.