What this Zener TVS diode does on your rail
It clamps a 94V nominal rail (reverse standoff) to 152V max at 4A (8/20µs), protecting downstream semiconductors from voltage transients. The T-18 axial package (through-hole) suits point-of-use clamping on power inputs, relay coils, or DC bus lines where a single TVS per channel is sufficient.
Clamping voltage and pulse current — the numbers that matter
The 152V max clamping voltage at 4A (8/20µs) means the protected circuit must survive that peak without damage. The 600W peak pulse rating is based on the 10/1000µs waveform — a shorter pulse (8/20µs) allows higher peak current, as shown in the datasheet derating curves.
onsemi lists the P6KE110ARL as Obsolete. No direct replacement is specified by the manufacturer. The T-18 axial package and 94V standoff voltage are common in the P6KE family; a parametric search across the same 600W series with a similar breakdown voltage (105V min) may yield a current alternative. No stock-holding claim; availability confirmed at quote time.