Device identity and key parametrics
The 1.5KE400CAH: The breakdown voltage range starts at 380V minimum, and the device handles a peak pulse current of 2.8A under the standard 10/1000µs pulse condition.
Mounted in a DO-201AA axial leaded package (DO-27 equivalent), the through-hole form factor suits high-reliability power and automotive boards where surface-mount TVS devices may lack the surge energy handling. The axial leads allow direct insertion into plated through-holes; the DO-201 body handles the 1500W pulse without package cracking when the PCB copper area provides adequate heat sinking for repetitive events.