Surge rating and clamping performance
The 1.5KE120A-HF: This means a 120V bus hit with a lightning-induced or inductive-load transient sees the spike held to 165V — within the withstand voltage of most downstream semiconductors rated for 200V or higher. The junction temperature range spans -55°C to 150°C, covering the full industrial and automotive under-hood thermal envelope. No derating is needed at 85°C ambient; at 125°C the peak pulse power should be derated per the datasheet curve.
Package and board integration
Supplied in a DO-201AA / DO-27 axial-lead package (supplier device package DO-201), the 1.5KE120A-HF is a through-hole part. It mounts into a 0.052-inch diameter hole on a standard PCB or terminal block — the axial leads are trimmed and formed to fit the hole spacing. The package is rated for tape-and-box (TB) handling for automated assembly.
This is a current-design part available through distribution.