1500 W clamping — what the ratings mean on the bench
The 1.5KE36AG: That 1500 W figure is the energy it can absorb in a single surge — a 30 A peak current gets clamped to 49.9 V max, which keeps the downstream silicon below its breakdown threshold. Reverse standoff voltage is 30.8 V, so it sits across a 24 V or 28 V rail without conducting in normal operation. Breakdown starts at 34.2 V minimum, meaning the device stays off until the line rises about 11% above the standoff — that gap is the guard band against nuisance triggering on ripple. Operating temperature spans -65°C to 175°C junction — the upper end covers hot spots inside a sealed enclosure or near a heatsink. The DO-201AD axial body is through-hole, so it takes a soldering iron well for rework or repair.