1500 W bidirectional transient suppressor for 9 V rails
The SMCJ9.0CA-13: It clamps a transient at 15.4 V maximum while the protected rail sits at 9 V reverse standoff — the margin between standoff and clamp voltage gives the circuit headroom to ride through surges without disrupting normal operation. With a single bidirectional channel, this part protects a single signal pair or power rail in either polarity — useful for AC-coupled lines or differential pairs where the transient can swing positive or negative relative to ground.
Housed in the DO-214AB (SMC) package, the SMCJ9.0CA-13 is a surface-mount device with a standard footprint shared across the SMCJ series. The part is rated for general-purpose applications and carries no power-line protection designation — it is intended for signal and low-power rail transient suppression, not mains-side clamping.