Automotive-grade transient suppression — 1500 W peak pulse, 89.2 V standoff
The 1.5KE110CH: The 89.2 V standoff voltage sits below the nominal 96 V to 110 V bus rails common in 48 V automotive systems or industrial DC links, so the diode stays in high-impedance state during normal operation and only conducts when a transient exceeds the breakdown threshold (99 V min).
Clamping and thermal envelope for the BOM engineer
The 158 V maximum clamping voltage at 9.9 A peak pulse current defines the voltage stress the downstream circuitry must survive — a 150 V-rated MOSFET or capacitor on the protected rail has margin, but a 100 V-rated part does not. The DO-201AA (DO-27) axial-lead package is a through-hole form factor with a 0.052-inch lead diameter — the thermal resistance to ambient depends on the lead length and PCB copper area; a 10 mm lead length on each side into a 25 mm² pad gives roughly 60°C/W junction-to-ambient.