The 1.5KE82: The reverse standoff voltage is 70.1 V; the circuit's normal operating rail must stay below this level to avoid leakage. Unidirectional (single-channel) — the cathode band marks the anode; for bidirectional clamping on an AC line, two parts in series or a bidirectional TVS from the same series would be needed.
Temperature range and package
Housed in a DO-201AA / DO-27 axial leaded package (supplier device package DO-201), through-hole mounting — the same footprint as standard 1.5KE-series parts, so a board spin is not required for replacement.