Last-buy status — what it means for your BOM
The 1.5KE18A-E3/51: Vishay has placed the 1.5KE18A-/51 on last-time-buy status — the official lifecycle record shows Last Buy. This is a heads-up for any BOM that uses this order code: the window for factory orders is closing, and once the remaining inventory clears, new supply will come only from surplus or broker channels.
Clamping performance and fit check
For a 12 V rail that sees transients above the normal operating level, the 15.3 V standoff gives headroom while the 25.2 V clamp keeps the spike within the downstream device's abs-max rating — provided the trace inductance and the TVS's own response time are accounted for in the layout.
Housed in a DO-201AA (DO-27) axial-lead package, through-hole mounted. The axial leads suit point-to-point wiring or PCB through-holes; the body length and lead diameter match standard 1.5KE-series footprints.