1500W bidirectional TVS for 30.8V automotive rails
The 1.5KE36CAH: The 30.8V reverse standoff voltage means it sits across a 24V nominal or 28V regulated bus without conducting leakage current under normal operation. Clamping triggers at 34.2V minimum breakdown and hard-limits transients to 49.9V maximum at the 31A peak pulse current. This 19.1V clamping window protects downstream ECUs, sensors, and communication interfaces from load-dump and inductive kickback events.
DO-201 axial package and through-hole mounting
The DO-201AA (DO-27) axial-lead package is the through-hole form factor that handles the 1500W pulse without the package-crack risk that can occur with SMD packages under repetitive surge events. The leads are tin-plated copper for solderability and current-carrying capacity. The body is molded epoxy with a flammability rating per UL 94 V-0. For PCB integration, the lead spacing and body diameter match the standard DO-201 footprint. The axial leads allow either vertical or horizontal mounting — horizontal mounting with the body against the board improves heat sinking to the copper plane.
Bidirectional channel for symmetrical signal protection
This makes it suitable for differential signal pairs (CAN, CAN FD, RS-485, FlexRay) where the common-mode voltage can swing above or below ground. Power line protection is not intended — the device is designed for signal and data-line applications, not AC mains suppression. The 31A peak pulse current rating at the 10/1000µs waveform means the device can absorb a single surge of that magnitude. For repetitive surge events, derate the peak pulse power according to the pulse repetition rate and ambient temperature — the thermal impedance of the DO-201 package limits the average power dissipation to well below 1500W.