Peak pulse power and voltage ratings
The 1.5KE160A-E3/73: Breakdown voltage starts at 152 V minimum, so the device does not conduct in standby below that threshold, and the unidirectional channel handles one polarity of transient.
Package and deployment context
Housed in a DO-201AA (DO-27) axial-lead package with through-hole mounting — the lead bend and body length fit standard 0.4-inch pitch PCB holes or terminal block wiring, and the 1.5KE supplier device package marking is consistent across the series.