1500W surge rating and protection window
The 1.5KE39CA-TP: Its 37.1V minimum breakdown voltage ensures the device starts conducting before the protected circuitry sees damaging overvoltage, while the 53.9V maximum clamping voltage limits the let-through energy during a surge event.
DO-201AE axial package and through-hole mounting
Housed in a DO-201AE axial-lead package, the 1.5KE39CA-TP mounts through a plated hole on the PCB. The axial form factor allows the body to sit above the board surface, improving convective cooling around the junction during repetitive surge events. The lead spacing matches standard 0.100-inch pitch layouts common in power-supply and telecom protection stages. The bidirectional configuration (single channel) means no polarity marking is needed — the device clamps equally on positive and negative transients, simplifying assembly verification.
Active lifecycle and sourcing posture
No pin-compatible second-source is recorded on this specific order code, but the 1.5KE39 family shares the same DO-201AE footprint and 1500W rating across manufacturers — cross-reference verification is straightforward.