Automotive-grade transient suppressor for 12V rail protection
The 1.5KE12AH: Its 10.2V reverse standoff voltage means it stays transparent during normal operation and only conducts when the line exceeds that threshold.
Clamping performance and breakdown margins
This clamping ceiling protects downstream silicon rated for 20V or higher, typical for 12V automotive loads. The single unidirectional channel is polarity-specific — it protects one rail against positive transients; for bidirectional protection on AC or bipolar lines, two devices or a bidirectional variant is needed.
Package and board integration
Housed in a DO-201AA (DO-27) axial-lead through-hole package, the 1.5KE12AH is hand-solderable or wave-solderable and suits prototyping, rework, and high-reliability point-to-point wiring. The tape-and-reel packaging option supports automated insertion for volume builds. Power line protection is not provided — this is a transient suppressor, not a continuous overvoltage clamp; it is intended for short-duration surge events per IEC 61000-4-5 or similar.
Sourcing and lifecycle posture
For BOM placement, the base product number is 1.5KE12; the 'AH' suffix denotes the automotive grade and specific packaging variant. Confirm the exact ordering code matches the reel quantity and temperature grade required for the line item.