Last-buy window — what it means for your BOM
The 1.5KE62A-E3/51: Vishay has flagged the 1.5KE62A-/51 as Last Buy — the manufacturer's final production run is in progress or closed, and remaining stock is the last available through authorized channels. For a BOM that already carries this order code, the decision is whether to secure lifetime buy quantities now or plan a qualification to a replacement part before the existing inventory runs out.
Protection envelope — 1500W axial TVS
The 1.5KE62A-/51 is a 1500W peak pulse power (1.5kW) Zener TVS diode from Vishay's TransZorb® series, designed to clamp transients on DC power rails, signal lines, and low-voltage secondary circuits in industrial and general-purpose equipment. The 85V clamp means a 48V nominal rail sees the transient held below 85V — well within the typical 100V MOSFET breakdown margin on the downstream converter.
Package and mounting — through-hole axial
Housed in a DO-201AA / DO-27 axial-lead package, the 1.5KE62A-/51 is a through-hole part — the leads are soldered into plated through-holes on the PCB, which provides a stronger mechanical anchor than surface-mount for high-reliability or high-vibration environments.