What the 600 W peak pulse rating means for the BOM
The P6KE68CA-T: The 92 V clamping voltage at 6.5 A peak pulse current defines the maximum voltage the downstream circuitry sees during a surge event; a 58.1 V reverse standoff means the diode stays off below that DC or peak AC voltage, so it does not leak on a nominal 48 V bus or a 48 V telecom rail.
Lifecycle reality — obsolete, sourced to order
Diodes Incorporated lists the P6KE68CA-T as obsolete. A board-level repair or a last-time-buy fill for an existing BOM line is feasible — a new design should select an active TVS with equivalent or tighter clamping.
The DO-204AC (DO-15) axial-lead package suits through-hole mounting on a single-sided or double-sided board. The 0.032-inch diameter leads fit standard 0.040-inch plated-through holes. The body length and lead spacing are consistent with the P6KE family footprint — a replacement TVS in the same package drops in without a board spin.
The 175 °C ceiling covers hot environments such as an outdoor telecom cabinet in direct sun or a sealed power supply. Derate the 600 W peak pulse power above 25 °C per the manufacturer's curve; at 175 °C the derated capability is roughly 20 % of the 25 °C rating.