Transient suppression rating and what it means for your rail
The 1.5KE160A: That power rating means it can clamp a 6.9A transient to 219V maximum — the voltage the load sees during the surge event. The reverse standoff voltage is 136V, so the diode stays transparent on a nominal 120V DC or AC rail — it will not conduct or leak significantly below that threshold. The breakdown voltage range starts at 152V minimum, giving a guard band before the clamping kicks in.
Housed in a DO-201AA (DO-27) axial leaded package, the 1.5KE160A mounts through-hole. The DO-201 footprint is common across the 1.5KE series; the axial leads suit point-to-point wiring or PCB insertion with standard 1.27mm pitch holes.