Transient suppression for 40V rails
The 1.5KE47CA/B: The 44.7V minimum breakdown voltage ensures the device stays off during normal operation, while the 64.8V clamp protects downstream silicon rated for 65V or higher. The bidirectional configuration means a single part handles positive and negative transients — useful on AC-coupled signal lines or bipolar power buses.
Package and board integration
Housed in a DO-201AA (DO-27) axial-lead package, the 1.5KE47CA/B is a through-hole component suited for point-to-point wiring or PCB mounting with 0.100-inch pitch holes. The DO-201 footprint is standard across the 1.5KE family, so a single board layout accepts the full voltage range from 6.8V to 440V. The device does not include power line protection features — it is a pure transient suppressor for signal or low-power DC rails.
YAGEO lists the 1.5KE47CA/B as Active in production.