1.5 kW peak pulse in a DO-201AA axial package
The 1.5KE510A-E3/54: The 1.5KE510A-/54 is a 1500 W (1.5 kW) TransZorb Zener TVS diode from Vishay, designed to clamp transients on 434 V nominal rails. The 698 V maximum clamping voltage at 2.15 A peak pulse current (10/1000 µs waveform) defines the voltage the downstream circuitry must survive — a key parameter for selecting the TVS for a given surge environment. Housed in the DO-201AA (DO-27) axial-lead package, it mounts through hole and suits general-purpose transient suppression in industrial, telecom, and power-supply applications where board space allows a leaded part.
Clamping voltage and breakdown tolerance
The minimum breakdown voltage is 485 V, with a reverse standoff of 434 V — the TVS remains non-conductive below this level, so it does not load the protected line during normal operation. The 698 V clamping ceiling at the rated 2.15 A peak pulse current (10/1000 µs) sets the maximum voltage the load sees during a surge event.