Transient protection for 150V rails
Its 600W peak pulse power rating means it can absorb a single high-energy surge without failing, making it a common choice for telecom rectifiers, industrial power supplies, and motor-drive DC links where the operating voltage sits near 150V.
The minimum breakdown voltage is 167V, which gives a guard band above the 150V standoff — the diode does not conduct at the nominal rail voltage.
