What this TVS diode protects
The P6KE16AG: Clamping is specified at 22.5V maximum at the peak pulse current of 27A (8/20µs), which is the voltage the protected rail sees during a transient event. Housed in an axial leaded package, it mounts through-hole.
The axial package and through-hole mounting are common across the P6KE family, so a pin-compatible replacement from the same series (e.g., P6KE16A) may be a drop-in if the breakdown and clamping specs align with the design margin.
