600W peak pulse, 22.8V breakdown — a through-hole TVS for general-purpose transient protection
The STMicroelectronics P6KE24ARL is a 600W peak pulse power Zener / TRANSIL™ transient voltage suppressor in a DO-204AC (DO-15) axial-lead through-hole package. It is designed for general-purpose overvoltage clamping on unidirectional lines, with a minimum breakdown voltage of 22.8V and a maximum clamping voltage of 42.8V at the rated peak pulse current of 93A (8/20µs waveform). The reverse standoff voltage is 20.5V, meaning it stays transparent below that level and starts clamping above it. This part is from the P6KE series, a widely used TVS family for industrial, telecom, and consumer power rails where through-hole assembly is preferred.
Obsolete — no direct replacement on record
For new designs or BOM continuity, consider evaluating the broader P6KE family for a functionally similar voltage tier — the P6KE series includes many breakdown voltage options in the same DO-15 package.
Key ratings for the BOM decision
The 22.8V minimum breakdown voltage sets the threshold where the device begins to conduct — below that, the 20.5V standoff rating ensures no leakage impact on the protected rail. The 42.8V clamping voltage is the maximum voltage the downstream circuitry sees during a surge event; a 600W peak pulse rating means it can absorb a single 93A, 8/20µs transient without damage. Capacitance is 1250pF at 1MHz, which may be a consideration for high-speed signal lines but is typical for a 600W-class TVS.