1500W peak pulse power, 28.2V standoff
The 1.5KE33AH: The reverse standoff voltage is 28.2V, with a minimum breakdown of 31.4V — this window protects a 24V nominal rail from transients while staying clear of the operating voltage. The Zener type means it conducts symmetrically in reverse breakdown, suited for unidirectional clamping on a single supply line.
DO-201 axial package, -55 to 175°C range
Housed in a DO-201AA (DO-27) axial-lead package, through-hole mounted. No power line protection is built in; this is a discrete transient suppressor, not a rail clamp with integrated filter.