What the 1500W rating means for your 24V rail
The 1.5KE24AHB0G: Its 20.5V reverse standoff voltage means it stays out of conduction during normal operation, while the 33.2V maximum clamping voltage at 47A peak pulse current (10/1000µs waveform) limits the spike the downstream circuitry sees. The 22.8V minimum breakdown voltage ensures the device triggers before the rail exceeds safe limits. The single unidirectional channel protects one polarity; for AC or bidirectional lines, two devices back-to-back or a dedicated bidirectional part is needed.
Package, mounting, and board integration
Housed in a DO-201AA (DO-27) axial-lead through-hole package, the 1.5KE24AHB0G mounts into a standard 0.100-inch pitch board hole. The bulk packaging means it ships loose in a tube or bag, not on tape-and-reel — plan for hand or wave-solder assembly, not automated pick-and-place. The DO-201 body is larger than the smaller SMA/SMB surface-mount TVS packages, so it handles higher surge energy but takes up more board area. For a 24V automotive battery line, place it after the fuse and before the sensitive electronics, with the cathode toward the positive rail.