Active production, AEC-Q101 qualified — the BOM-fit baseline
The 1.5KE51CAHE3_A/C: AEC-Q101 qualification (the automotive discrete semiconductor reliability standard) confirms the device meets the temperature cycling, ESD, and moisture-resistance tests required for under-hood and chassis-mounted electronics.
1500W peak pulse — sizing the transient protection
The reverse standoff voltage of 43.6 V means the device draws negligible leakage below that rail level; breakdown starts at 48.5 V minimum, so a nominal 48 V bus sees no loading during normal operation. Bidirectional configuration — one channel, symmetrical breakdown in both directions — suits AC signal lines or DC rails where reverse-polarity connection is possible, eliminating the need for a series diode.
Through-hole DO-201AA — mounting and thermal path
Housed in a DO-201AA (DO-27) axial-lead package, the part is intended for through-hole PCB mounting or point-to-point wiring in high-reliability assemblies; the leaded body conducts heat to the board copper more effectively than a surface-mount equivalent at the same power level.