What the 1500W peak pulse rating means for your protection design
The 1.5KE22CA-HF: For a 49.02 A peak pulse current, the clamping voltage holds at 30.6 V max, so the protected rail sees no more than that during the surge. The reverse standoff voltage is 18.8 V, meaning the diode stays off below that level and does not leak into the circuit during normal operation. Breakdown starts at 20.9 V minimum, so there is a 2.1 V window between the rail voltage and the clamping threshold — enough margin for most 12 V or 15 V rails without nuisance triggering.
Package and rework reality — DO-201 axial through-hole
The DO-201AA / DO-27 axial package is a through-hole part with a single bidirectional channel — no polarity marking to worry about, which simplifies hand assembly and rework. The leads are thick enough to survive a couple of hot-air cycles without lifting the pad, and the body is large enough to read the marking without a loupe.
Lifecycle and sourcing — still in active production
The Tape & Box packaging suits both hand-insertion and automated axial feed machines.