Zener TVS for automotive 77.8V rail protection
The 1.5KE91AH: Its 86.5V minimum breakdown voltage and 125V maximum clamping at 12.6A peak pulse current (10/1000µs waveform) define the protection envelope for 12V, 24V, and 48V automotive systems where the steady-state voltage stays below 77.8V. AEC-Q101 qualification confirms the part meets automotive-grade stress tests: temperature cycling, high-temperature reverse bias, and ESD robustness.
Package and board-fit for DO-201 axial mounting
The 1.5KE91AH ships in tape and reel, suitable for automated insertion or hand-solder rework. The axial leads require a 0.036-inch (0.9 mm) diameter hole on a 0.400-inch (10.16 mm) lead spacing — confirm the PCB layout matches before committing the BOM line.