Transient suppressor for 20.6V rails
Its 20.6V reverse standoff voltage makes it a direct fit for 24V nominal DC buses that see surge transients — think industrial control panels, telecom rectifiers, and military power supplies where the -55°C to 175°C junction range covers the thermal extremes.
Breakdown and clamping margins
Minimum breakdown voltage is 25.7V, giving a 5.1V guard band above the 20.6V standoff — enough headroom to avoid nuisance triggering on normal rail ripple while still clamping hard at 37.4V. The 1500W peak pulse rating at 25°C derates linearly above that; for a 85°C ambient the effective pulse power drops to about 1000W, so size the protection margin accordingly.
Microchip lists the 1N6152A as Active. No end-of-life notice, no successor designated. The through-hole Axial package (B, Axial) keeps it in the same footprint as legacy 1N6xxx series parts, so a BOM swap-in from an older 1N6152 (non-A) is a straight drop — the 'A' suffix denotes a tighter breakdown tolerance band, not a pinout change.