Last Buy — what it means for your BOM
The 1.5KE8.2A-E3/51: Vishay lists the 1.5KE8.2A-/51 as Last Buy, meaning this is the final production run. Once the remaining inventory is consumed, the only channel will be independent surplus or broker stock. For a BOM that depends on this specific TVS, the procurement decision is time-sensitive: secure the last-time-buy quantity now, or plan a board spin to a currently active TVS with similar clamping characteristics.
Package and mounting — axial-lead integration
The DO-201AA (DO-27) axial-lead package is a through-hole form factor that solders into a 1.1 mm diameter hole on a standard PCB or can be wired point-to-point in a terminal block. The lead spacing and body diameter are consistent with the 1.5KE family footprint, so a replacement from the same series drops in without layout changes.