Active production with AEC-Q101 traceability for 12V automotive transient protection
The 1.5KE15CH is an active-production bidirectional Zener TVS diode from Taiwan Semiconductor's 1.5KE series, qualified to AEC-Q101 for automotive-grade reliability screening.
Bidirectional clamping and thermal envelope for under-hood deployment
A single bidirectional channel handles both positive and negative transients on the same line, which simplifies board layout on AC-coupled signal paths or power rails where reverse polarity protection is already present. Housed in a DO-201AA (DO-27) axial leaded package with a DO-201 supplier device package designation, the through-hole mounting suits point-to-point wiring and high-reliability solder joints in high-vibration environments.
No power line protection — pure signal and bus transient suppression
The 1.5KE15CH does not include power line protection circuitry — it is designed for general-purpose transient suppression on signal, data, and low-power bus lines where the 12.1V standoff voltage provides margin below the 13.5V minimum breakdown. For a 12V automotive battery line, the 12.1V standoff sits below the normal operating voltage range (typically 9V to 16V), so the diode remains non-conducting during normal operation and only clamps above 13.5V.