1.5kW Zener TVS in a through-hole axial package
The 1.5KE440A-B: Its 376 V reverse standoff voltage means it stays out of the way on a nominal 375 VDC rail, only conducting when a transient pushes the line past the 418 V minimum breakdown threshold. The DO-201AA / DO-27 axial leaded package is a field-service-friendly through-hole part — you can swap it on site with a standard soldering iron, no hot-air station needed, and the body marking is clear enough to get orientation right the first time.
Active production, no obsolescence watch needed
The junction temperature range spans -55°C to 175°C, covering industrial and some automotive under-hood environments without derating concerns at the board level.