What this 1500W Zener TVS does on the board
The 1.5KE110A-T: It clamps a transient at 152V maximum when the surge current hits 9.9A, and the reverse standoff voltage is 94V — meaning it stays out of the way on a 94V rail and only conducts when the line goes above that. The part is obsolete per the manufacturer, so new-stock sourcing runs through independent distribution channels.
Voltage ratings and what they mean for your rail
If your 94V bus sees a transient, the TVS limits it to 152V — that is the voltage the downstream components must survive. The 1500W peak pulse rating is the energy-handling capability at the 10/1000µs test waveform. For shorter or longer pulses, the peak power derates — the datasheet curve (not reproduced here) shows the trade-off. No power line protection feature is included, so this is a pure transient clamp, not a filter.
Obsolete — sourcing reality for the 1.5KE110A-T
Diodes Incorporated lists the 1.5KE110A-T as obsolete. The through-hole DO-201 package is still common across many TVS families, so if a board spin is an option, a parametric search for a 94V standoff, 1500W, unidirectional Zener TVS in the same footprint will yield active alternatives.