1.5kW transient suppressor for 7.78V rails
The 1.5KE9.1A B0G: That 13.4 V ceiling keeps downstream components — an MCU input or a DC-DC converter front-end — inside their absolute-maximum ratings during the event.
Package and temperature envelope
Housed in a DO-201AA / DO-27 axial-lead package (supplier device package DO-201), the part is a through-hole mount — the leads are formed for point-to-point wiring or PCB insertion. The junction temperature range spans -55°C to 175°C, covering the full industrial and automotive ambient envelope with margin for self-heating during repetitive surge events. Power line protection is not listed as a feature — this is a general-purpose transient suppressor for signal and low-power DC rails, not a primary AC mains protector. The bulk packaging suits manual or wave-solder assembly in lower-volume production runs.
Active production and sourcing posture
The axial DO-201 footprint is a common industry standard — if a second-source hedge is needed, parametric equivalents from other manufacturers in the same package are straightforward to qualify.