What the 1500W peak pulse rating means on the bench
The 1.5KE150-E3/73: That 1500W figure is the device's ability to clamp a transient without self-destructing — the actual energy it absorbs depends on the pulse duration and the clamping voltage it hits. The 136V minimum breakdown voltage means it starts conducting before the rail sees destructive overvoltage.
Package and rework reality — DO-201AA axial
Housed in a DO-201AA (DO-27) axial leaded package, this is a through-hole part. The axial leads are robust enough for hand insertion and wave solder, and the body is large enough to read the marking without magnification — pin 1 is the cathode band, clearly marked.
Lifecycle status and sourcing
Available through independent surplus and broker channels. Quantities are lot-specific; we source and quote to order against an RFQ.