Protection window and surge rating
The 1.5KE82CA-B: The 70.1V reverse standoff voltage means the device stays transparent below that rail level; it starts clamping once the transient pushes above the 77.9V minimum breakdown threshold. The 113V maximum clamping voltage at 13.3A peak pulse current defines the voltage the downstream circuitry must survive. Bidirectional construction — a single device protects both polarities, which suits AC signal lines or DC rails where the return path can swing negative relative to ground.
Obsolete — sourcing through independent channels
Diodes Incorporated has marked the 1.5KE82CA-B as Obsolete. Sourcing now runs through independent distribution and surplus inventory channels — each lot is verified for traceability and authenticity before it enters the BOM. A cross-reference search against the full 1.5KE family is the practical next step for a BOM that needs a drop-in.