Active Zener TVS with 1500 W pulse rating
The 1.5KE100A-G: The reverse standoff voltage is 85.5 V, with a minimum breakdown of 95 V. For a 48 V or 72 V DC bus, this part sits below the rail during normal operation and only conducts when the transient exceeds the breakdown threshold. It is a single unidirectional channel, so polarity matters — cathode to the protected rail, anode to ground.
Housed in a DO-201AA (DO-27) axial-lead package, through-hole mounted. The axial body is roughly 9 mm long with 0.96 mm diameter leads — standard for a 1.5 kW class TVS. The tape-and-box (TB) packaging suits hand-insertion or low-volume automated assembly; not a reel-for-reel SMT pick-and-place. Operating temperature spans -55 to 150 °C junction.
Sourcing and compliance posture
Comchip Technology lists the 1.5KE100A-G as active, so it remains in current manufacture. The part is marked General Purpose in application scope. No power-line protection — it is not designed for AC mains surge suppression. For DC rail or signal-line clamping in a 48–85 V system, this is a straightforward fit.