Last-buy status — plan the BOM migration now
The 1.5KE82A-E3/51: Vishay lists the 1.5KE82A-/51 as Last Buy, meaning the manufacturer has stopped accepting new orders for this part and is fulfilling final shipments only. Once that inventory is exhausted, no further production runs are planned. For a BOM line that depends on this TVS, the window to secure last-time-buy quantities is closing. Sourcing through independent distribution is the fallback — availability and pricing are confirmed at RFQ, not from a stock counter.
TransZorb clamping — what the ratings mean for the rail
The 70.1 V reverse standoff voltage defines the maximum DC rail it can protect without conducting — a 48 V or 60 V bus is within that margin. That 113 V ceiling is what the downstream circuitry must survive; if the load's abs-max rating is below that, a secondary clamp or a higher-energy TVS is needed.
Through-hole package — board integration
Housed in a DO-201AA / DO-27 axial-lead package, the 1.5KE82A-/51 is a through-hole part. The axial leads suit point-to-point wiring or PCB through-holes; the package body is the same as the 1.5KE series footprint. Supplied in Bulk — no tape-and-reel, so manual or tube-fed insertion is the assembly method.