Transient voltage suppressor for 28V rails
The 1.5KE33A A0G is a 1500W unidirectional Zener TVS diode from Taiwan Semiconductor's 1.5KE series, designed to clamp overvoltage transients on DC power rails and signal lines operating at 28.2V nominal.
Peak power and temperature envelope
The operating junction temperature range spans -55°C to 175°C, which covers both cold-start conditions and hot environments near power transformers or engine compartments without derating the pulse power capability at the high end.
Package and mounting for axial insertion
Housed in a DO-201AA (DO-27) axial-lead through-hole package, the 1.5KE33A A0G mates with standard 0.040-inch diameter holes on a 0.400-inch lead spacing — a common footprint shared across the 1.5KE series, so board layouts for the 33V variant drop in without pad changes. The tape-and-box packaging (TB suffix) delivers the diodes in ammo-box format for axial insertion machines; the laser-etched marking on the body carries the full part number and date-code for lot traceability back to Taiwan Semiconductor's plant.
Active production and sourcing posture
No pin-compatible alternative within Taiwan Semiconductor's own catalog is listed as a direct successor.