Device identity and key parametrics
It protects a 70V nominal rail and can handle 600W peak pulse power (10/1000 µs waveform) with a clamping voltage of 113V at the rated 5.5A peak pulse current.
The minimum breakdown voltage is 77.8V, which gives a guard band above the 70V reverse standoff. The 113V maximum clamping voltage tells you the highest voltage the protected circuit will see during a pulse — ensure downstream components (caps, ICs) have a voltage rating above that level. The 5.5A peak pulse current rating (10/1000 µs) is the current the diode can sink while clamping; paired with the 600W peak pulse power, this defines the surge capability. For longer or higher-energy events, you may need to parallel devices or step up to a higher-power series.