1500 W peak pulse — what the rating means for circuit protection
The 1.5KE100AHB0G: The reverse standoff voltage of 85.5 V is the DC or continuous AC voltage the diode blocks without conducting; the breakdown voltage range starts at 95 V, so the diode remains high-impedance below that threshold and only begins to avalanche when the transient exceeds it. With a single unidirectional channel, this diode protects one rail — typically a DC bus or signal line referenced to ground — and the cathode band on the DO-201 body marks the polarity for correct board orientation.
AEC-Q101 qualification — the automotive-grade screening
The Automotive grade designation on the part number suffix (HB0G) signals that this variant is screened to the AEC-Q101 test flow, not just the commercial 1.5KE die — a procurement distinction that matters when the customer PPAP requires the automotive-grade certificate.
DO-201 axial package — board integration and rework
The DO-201AA (also known as DO-27) axial-lead package is a through-hole form factor with a 0.052-inch diameter lead — it inserts into a 0.040-inch plated through-hole and is wave-soldered or hand-soldered on the opposite side. For a rework lab tech, the axial body is straightforward to extract with a desoldering iron or hot-air pencil; the lead spacing is wide enough that adjacent components are not shadowed during removal. The bulk packaging means the diode ships loose in a bag or tube, not taped and reeled — suitable for prototype builds, repair stock, or low-volume production where a pick-and-place feeder is not used.