Transient protection with a 1500 W punch
The 1.5SMC130AS_R1_00001: The 8.4 A peak pulse current at that waveform tells you the diode can handle a sustained surge, not just a single spike.
What the breakdown and clamping numbers mean for your rail
Reverse standoff voltage is 111 V (typ) — this is the DC bus voltage the diode will not conduct at. Breakdown occurs at a minimum of 124 V, and clamping is guaranteed at 179 V maximum when the full 8.4 A peak pulse current flows. That 179 V ceiling is the voltage your downstream ICs see during a surge; if that exceeds the absolute max of the protected part, you need a higher-power or lower-clamping TVS. The 1500 W rating is for a 10/1000 µs exponential waveform — the standard telecom surge. For shorter pulses (8/20 µs), the peak power capability is higher; the datasheet derating curve is the reference for non-standard waveforms. This part does not include power-line protection (: No) — it is intended for signal, data, or low-voltage DC bus protection, not mains AC.
Package and board-fit — DO-214AB (SMC)
Housed in a DO-214AB (SMC) surface-mount package, the diode occupies a standard footprint with the cathode band marking polarity. The tape-and-reel packaging (Cut Tape also available) suits high-volume pick-and-place assembly.