That 1500 W rating means it can clamp a 32.5 V peak voltage while absorbing 308 A of surge current (8/20 µs pulse), making it a solid choice for protecting 15 V rails in industrial and general-purpose power supplies.
15 V standoff — the rail it guards
The reverse standoff voltage is 15 V, so this TVS sits across a 15 V DC bus and stays out of the circuit until a transient exceeds the 16.7 V minimum breakdown threshold. The clamping voltage maxes at 32.5 V, which keeps downstream silicon within safe limits for most 15 V-rated ICs.
DO-214AB (SMC) — rework and footprint
Housed in a DO-214AB (SMC) package, this part is surface-mount with a standard footprint that reflows cleanly under a hot-air station. The SMC body has enough thermal mass to handle the 1500 W pulse without lifting pads, and the unidirectional marking (cathode band) is clear enough to orient by eye under magnification.