Zener TVS for 17.1 V rail protection
Rated for 600 W peak pulse power per the 10/1000 µs waveform, it can absorb surge currents up to 22 A under the 8/20 µs condition. The 27.7 V clamping ceiling gives the downstream silicon a hard voltage limit during an event.
Onsemi lists the P6KE20AG as Obsolete. No last-time-buy window remains open from the factory. For BOM lines that still call this order code, supply comes through independent distribution and spot-market inventory — date codes vary, and screening for authenticity is the buyer's call against the Onsemi mark and package construction. The part is, not tape-and-reel, which means it ships in tubes or loose quantities — a detail for the pick-and-place feeder setup if you are running a reel-fed line.
Axial T-18 footprint and mounting
Through-hole axial package, supplier device package also listed as Axial. The body diameter and lead spacing match the standard P6KE series footprint — no board respin needed if you are replacing another P6KE variant. The axial leads require manual or wave-solder assembly; no reflow profile applies.