Active production, 1500 W bidirectional clamp
The 1.5KE22CA/B: Its 18.8 V reverse standoff voltage and 30.6 V clamping point make it a direct fit for protecting 18 VDC rails against transients up to 49.7 A peak pulse current.
Clamping voltage and breakdown window
The minimum breakdown voltage is 20.9 V, so the device begins conducting before the rail exceeds that threshold. The clamping voltage of 30.6 V at 49.7 A peak pulse current defines the maximum voltage the protected circuitry sees during a surge event — a 30.6 V clamp on an 18.8 V rail absorbs a 62 % overvoltage before the TVS limits further rise. This is a single bidirectional channel — a single DO-201 axial package clamps both polarities, eliminating the need for two series diodes in AC or bipolar signal protection.
DO-201 axial package and temperature range
Housed in a DO-201AA / DO-27 axial leaded package, the 1.5KE22CA/B mounts through-hole on a PCB or terminal block. The junction operates from -55 °C to 150 °C, covering industrial and automotive under-hood ambient conditions without derating at the upper end. The part is not rated for power line protection — it targets signal and DC rail transient suppression where the 1500 W peak pulse capability handles ESD, inductive kickback, and surge events per IEC 61000-4-5.