What the 1.5 kW rating means for your protection budget
The 1.5KE30AHA0G is a single-channel Zener TVS diode in the 1.5KE series, rated for 1500 W (1.5 kW) peak pulse power at the standard 10/1000 µs waveform — enough to clamp a 38 A transient to 41.4 V before the downstream silicon sees overvoltage. The 25.6 V reverse standoff voltage means the diode stays off below that rail level; it starts clamping at the 28.5 V minimum breakdown threshold. If your 24 V automotive bus sees load-dump or inductive kickback, this part holds the line before the ECU's input capacitors absorb the remaining energy.
Automotive qualification and thermal envelope
The junction temperature range spans -55°C to 175°C — comfortable for under-hood placement where ambient soaks above 125°C and the TVS self-heats during the pulse.
Sourcing and lifecycle reality
Taiwan Semiconductor continues to manufacture the 1.5KE series in the DO-201 package.