400W bidirectional TVS for 70V signal rail clamping
The SMAJ70CA-13: The breakdown voltage range (77.8V min) ensures the device remains transparent below the normal operating voltage while triggering reliably above it.
Housed in the DO-214AC (SMA) package, the SMAJ70CA-13 is a surface-mount device with a low-profile footprint suited for dense PCB layouts. The SMA package is a common industry standard — the same land pattern serves many TVS diodes in this power class, so a layout change is rarely needed when swapping between suppliers. Supplied on Tape & Reel (TR), it is compatible with automated pick-and-place assembly. The bidirectional configuration (single device, two junctions back-to-back) protects both polarities of a signal pair or an AC-coupled line without needing two unidirectional parts.
The part is marked with the base product number SMAJ70 and carries a General Purpose application classification. No power line protection rating means it is intended for signal and data line transient suppression, not for mains or high-energy AC power rail clamping.