What the voltage and power ratings mean for your circuit
The 1.5KE10AHE3_A/D: The 1500 W peak pulse rating means the diode absorbs that energy without failing, provided the pulse duration stays within the waveform's thermal limit. No power line protection (the device is unidirectional, not a bidirectional steering TVS) — it clamps one polarity only, so the cathode band must face the rail being protected, with the anode to ground.
Package and board-fit for through-hole assembly
Housed in a DO-201AA (DO-27) axial-lead package, the 1.5KE10AHE3_A/D is a through-hole part — the leads insert into plated through-holes and are wave-soldered or hand-soldered. The axial body orientation means it can be mounted standing upright or laid flat, depending on the board layout and clearance requirements. The package is supplied in Tape & Box (TB) format, which is a bulk-pack option for through-hole components — not a reel for automated pick-and-place, but suitable for tray or tube feeding in some through-hole assembly lines.