The 1.5KE62A/B: That 1500W number tells you the device can absorb a 17.9A surge before the junction temperature climbs out of the SOA — the clamping voltage at that current is 85V. The 53V reverse standoff means the part stays transparent on a nominal 48V or 52V rail and only starts conducting when the transient pushes past the 58.9V minimum breakdown threshold. The DO-201AA (DO-27) axial package is a through-hole form factor — the leads take the heat out to the board copper, so the effective surge rating depends on the pad size and trace cross-section. No power line protection here; this is a secondary-side transient clamp, not a primary mains suppressor.
Temperature range and deployment context
At 150°C the leakage current rises, but the clamping action still holds — the derating curve typically starts above 25°C, so at 85°C ambient you budget roughly 80% of the rated 1500W peak pulse. General-purpose application tag means it is not qualified to AEC-Q101 or a specific automotive grade, but the -55°C low end suits outdoor telecom cabinets, base stations, and industrial control panels where the ambient sees winter extremes.