1500 W peak pulse in a DO-201AA axial package
The 1.5KE47-E3/73: The 38.1 V reverse standoff voltage means it stays transparent on a nominal 36 V or 38 V rail, only conducting when the line exceeds that threshold. Breakdown occurs between 42.3 V (minimum) and the clamping ceiling — this window protects downstream silicon rated for 50–60 V without nuisance triggering on normal rail ripple.
Through-hole fit and temperature range
Unidirectional (single-channel) polarity — cathode band marks the anode for DC line protection. The part is not rated for power line protection (no bidirectional option), so it is intended for signal or DC bus transient suppression.