The 5-0SMDJ28CAH is a bidirectional Zener-based TVS designed for automotive and telecom transient suppression. The 28 V reverse standoff sets the normal operating voltage — transients above that level trigger the clamping stack, with the 45.4 V maximum clamping voltage holding the downstream circuit within its rated withstand. At that clamping point the part conducts 110 A peak pulse current for the standard 10/1000 µs surge waveform, which is the ISO 7637-2 pulse shape automotive ECUs are validated against. The 5 kW peak pulse rating is the surge energy the SMC body absorbs without degradation — this is the number that decides whether the part survives the load-dump and reverse-battery transients on a 12 V automotive rail. It is AEC-Q101 qualified, meaning it has passed the automotive-grade temperature cycling, humidity, and electrical overstress stress tests required for engine-compartment and chassis-domain deployments.
5-0SMDJ28CAH sourcing and production status
The series carries the 5-0SMDJxxH suffix designation, which ties it to the standard SMC (DO-214AB) package — a footprint widely accepted across automotive and telecom board assemblies. There is no official second-source or pin-compatible successor documented in the ledger for this specific order code.