The 1.5KE16A-E3/51: Vishay has placed the 1.5KE16A-/51 into Last Buy status, meaning the manufacturer has announced end-of-life and is accepting final orders before production ceases.
1500 W peak pulse — clamping the 13.6 V rail
The 15.2 V minimum breakdown voltage ensures the diode remains non-conductive during normal operation on a 13.6 V bus, while the 22.5 V clamp keeps the protected downstream circuitry within a safe voltage envelope during a surge event.
Through-hole axial — DO-201AA footprint
Housed in the DO-201AA (DO-27) axial-lead package, this is a through-hole component that inserts into plated through-holes on the PCB — the lead bend radius and hole diameter follow standard JEDEC guidelines for this body size.