The 1.5KE16CA R0G: Its 13.6 V reverse standoff voltage means it clamps transients on a 12 V nominal rail without conducting during normal operation. Breakdown occurs at 15.2 V minimum, and the clamping voltage is held to 22.5 V at the rated 70 A peak pulse current — this keeps the protected node below the typical 30 V abs-max of downstream 12 V logic and power devices.
DO-201 axial package, through-hole mounting
Housed in a DO-201AA (DO-27) axial-lead package, the 1.5KE16CA R0G mounts through-hole on a PCB or terminal block. The DO-201 body handles the 1500 W pulse without secondary breakdown when the lead length is kept short to minimise inductance. The wide temp range means derating for high ambient is straightforward — at 125 °C the peak pulse power is roughly 60 % of the 25 °C rating.