1500W peak pulse in a DO-201 axial package
The 1.5KE13AH is a 1500W (1.5kW) peak pulse power TVS diode from the 1.5KE series, built for clamping transients on 12V nominal rails in automotive and industrial systems. Its 11.1V reverse standoff voltage means it stays off the circuit during normal operation, then clamps at 18.2V maximum when a surge hits — protecting downstream silicon from overvoltage. Rated for 86A peak pulse current (10/1000µs waveform), this part handles high-energy events like load-dump or alternator field decay without failing short. The DO-201 axial package (DO-27 equivalent) is a through-hole form factor that solders into a standard 0.100-inch pitch board hole — no special footprint needed.
Automotive-grade reliability with AEC-Q101
Qualified to AEC-Q101, the 1.5KE13AH meets the stress and lifetime tests required for automotive electronics — temperature cycling, high-temperature reverse bias, and ESD robustness. The operating junction temperature range spans -55°C to 175°C, covering under-hood and engine-bay thermal profiles without derating at the hot end.
Breakdown and clamping window
Breakdown voltage minimum is 12.4V, ensuring the device triggers before the protected circuit's absolute maximum rating. The 11.1V reverse standoff (working voltage) gives headroom for 12V system tolerances — a nominal 12V bus that sags to 11.5V during cranking stays below the standoff threshold. Unidirectional design with one channel means the cathode band on the DO-201 body indicates the protected rail side; the anode connects to ground. Power line protection is not supported — this is a signal or low-power rail protector, not a mains transient suppressor.