What the 1.5SMCJ14A-AQ is and how it clamps
The diode sits reverse-biased at 14 V standoff during normal operation, out of the circuit. The “-AQ” Automotive qualifier flags this as application-targeted within Diotec’s line. Operating junction temperature runs to 150°C, giving margin above the under-hood ambient band that an engine-compartment ECU or ADAS module would see on a hot day. This is a unidirectional device — it clamps positive transients only; a bidirectional variant would be needed for AC-coupled or bipolar rails.
Sourcing and lifecycle posture
Listed as Active. Quoted to order through independent distribution channels; current pricing and lead times are confirmed against the BOM quantity at RFQ.