Clamping voltage and surge current
The 1.5KE56CA/B: Breakdown occurs at 53.2V minimum, ensuring the device stays off below the normal rail tolerance. At the rated 19.7A peak pulse current, the clamp holds at 77V — this is the voltage the downstream components must survive. The single bidirectional channel protects against both positive and negative transients in one package, saving board space compared to back-to-back unidirectional diodes.
Package and temperature range
Housed in a DO-201AA (DO-27) axial leaded package, the 1.5KE56CA/B is a through-hole part suited for point-of-use transient suppression on power input stages or relay coils. The junction temperature range spans -55°C to 150°C, covering most industrial and outdoor deployment envelopes.
YAGEO lists the 1.5KE56CA/B as Active in production.