What the 1500 W rating means for your automotive line
The 1.5KE6.8CAHE3_A/D is a bidirectional Zener-type TVS diode from Vishay's TransZorb® series, qualified to AEC-Q101 for automotive use. The reverse standoff voltage is 5.8 V, with a minimum breakdown of 6.45 V. The bidirectional configuration means polarity doesn't matter during installation — useful for AC-coupled signal lines or where the ground reference is uncertain.
AEC-Q101 and the -55 to 175 °C operating range
AEC-Q101 qualification covers the full automotive stress suite: temperature cycling, high-temperature reverse bias, and ESD robustness. The DO-201AA (DO-27) axial-lead package is through-hole, which simplifies manual replacement in rework or prototyping. The 1.5KE package suffix indicates the standard 1.5 kW leaded package outline — the same footprint as the rest of the 1.5KE family, so a board layout designed for a 1.5KE6.8A accepts this part without changes.