The 1.5KE100: Housed in a DO-201AA axial-lead through-hole package (also known as DO-27), it clamps transients at a maximum of 143.85 V when hit with an 11.1 A pulse. The 85.5 V reverse standoff voltage means it sits across a nominal 85 V rail and stays out of the way until a surge pushes it above the 90 V minimum breakdown threshold.
Lifecycle reality — obsolete, sourced to order
No stock-holding claim — sourced per request.
Key ratings and what they mean for your board
No power line protection rating — this is a signal-rail or low-voltage bus clamp, not designed for AC mains primary-side suppression.