600W peak pulse power in a DO-214AA footprint
The 8.89V minimum breakdown voltage ensures the device starts clamping before the protected circuitry sees damaging overvoltage, while the 13.6V maximum clamping voltage at 44.1A peak pulse current keeps the load voltage within safe limits.
With an 8V reverse standoff voltage, this diode will not conduct at normal 8V DC operation, so it does not leak current into the protected line. The 8.89V minimum breakdown is the threshold where avalanche conduction begins — any transient that pushes the rail above that value gets shunted. The 13.6V clamping voltage at 44.1A is the worst-case voltage the load sees during a 600W surge; if your downstream components have an absolute maximum rating below 13.6V, you need a lower-clamping part or a higher power rating.