Automotive-grade TVS for 58 V rails
The 1.5KE68AHE3_A/D: It protects a single unidirectional line with a 58.1 V reverse standoff voltage, clamping transients to 92 V at 16.3 A peak pulse current (10/1000 µs waveform). The 58.1 V standoff means this diode sits across a nominal 48 V or 52 V rail without conducting in steady state, only clamping when the line exceeds the 64.6 V minimum breakdown threshold. That 92 V clamp ceiling keeps downstream FETs and ICs inside their 100 V absolute-maximum rating during a load-dump or inductive kickback event.
AEC-Q101 and the 175 °C junction
The 1500 W rating is derated above 25 °C per the standard power-derating curve; at 175 °C the device still handles roughly 300 W peak pulse, enough for most 12 V and 24 V load-dump transients. The DO-201AA (DO-27) axial-lead package is a through-hole form factor. The leads are tin-plated copper; the body is molded epoxy with the cathode band marked. For a board rework or repair bench, the axial body handles standard soldering iron or wave-solder profiles without special bake-out — no moisture sensitivity level concern for this package type.