1500W Zener TVS in an axial DO-201AA package
The 1.5KE10C-E3/54: It clamps transients from a 8.1V reverse standoff up to 15V maximum, handling 100A peak pulse current. The DO-201AA axial package suits through-hole board layouts where a single bidirectional device replaces two unidirectional diodes in series.
Clamping voltage and pulse current for 8.1V rails
The 15V clamping voltage at 100A means the protected circuit sees no more than 15V during a 10/1000µs surge, keeping downstream components within their abs-max ratings.