TVS clamp for 70.1V rails — AEC-Q101 qualified, now obsolete
The 1.5KE82AHE3/51: Its breakdown window starts at 77.9V and the clamping voltage is capped at 113V at the 13.3A peak pulse current, defining the protection level the downstream circuitry sees during a surge. This is a single-channel Zener-type TVS in the DO-201AA axial through-hole package, with a junction temperature range from -55°C to 175°C. The part belongs to Vishay's TransZorb series and carries AEC-Q101 qualification, meaning it meets automotive-grade reliability screening — temperature cycling, ESD, and moisture resistance per the AEC-Q101 discrete semiconductor standard.
Board-fit and footprint — DO-201AA axial leaded
The DO-201AA (also known as DO-27) package is a standard axial-leaded through-hole format. The lead spacing and body diameter are compatible with the common 1.5KE footprint — a replacement part in the same package family should fit the same drilled hole pattern without a board spin. The junction rating is the same as the storage range — no derating needed for shelf life.
End-of-life sourcing — obsolete, no successor on record
Vishay has marked the 1.5KE82AHE3/51 as Obsolete.