Active production — what it means for your BOM
The 1.5KE91CAHE3_A/D: This is a bidirectional TransZorb TVS diode from the Automotive series, qualified to AEC-Q101 — the automotive-grade reliability standard for discrete semiconductors under hood and chassis environments.
Transient protection window — 77.8V standoff, 125V clamping
The reverse standoff voltage is 77.8V, meaning the diode does not conduct at normal operating voltages up to that level; breakdown occurs at a minimum of 86.5V, defining the protection threshold. With a single bidirectional channel, it protects against both positive and negative transients on the same line — useful for AC-coupled or bipolar signal rails in automotive 12V/24V systems.
Through-hole axial package and temperature range
Housed in a DO-201AA (DO-27) axial-lead through-hole package, it mounts directly into a PCB or terminal block — the 1.5KE body size is standard for this power class.