Key ratings and what they mean for circuit protection
The 1.5KE15A: Reverse standoff voltage is 12.8 V typical, meaning the diode draws negligible leakage below this level and the protected rail stays within normal operating range. Breakdown starts at 14.3 V minimum.
Lifecycle reality — obsolete, sourced through independent channels
Board layout is fixed; a replacement in a different package would require a board spin.
