Automotive AEC-Q101 transient suppressor for 30.8V rails
The 1.5KE36CAHE3_A/D: It protects a 30.8V continuous DC rail (reverse standoff voltage) from transients, clamping at 49.9V maximum when the peak pulse current reaches 30.1A under the standard 10/1000µs waveform.
Breakdown window and clamping margin
The breakdown voltage range starts at 34.2V minimum, ensuring the diode remains non-conductive below the normal operating rail. The 49.9V maximum clamping voltage defines the upper limit the downstream circuitry must survive — a 12V ECU rated for 40V transients has margin, while a 5V logic rail would need additional post-regulation.
The AEC-Q101 qualification (the automotive industry's stress-test and reliability standard for discrete semiconductors) is the authority signal that tier-1 suppliers and OEMs require for under-hood and chassis-domain electronics. The TransZorb® series has a long production history, so PCN risk is low for established part numbers like this one.