1500W TVS for telecom bus protection
The 1.5SMC43A V7G: The unidirectional construction (one channel) is the right choice for a single-polarity supply line where the cathode is tied to the rail and the anode to ground.
Package and thermal envelope
The SMC footprint provides the copper area needed to dissipate the 1500 W pulse without exceeding the junction limit — the thermal impedance is set by the PCB pad geometry, not the package alone. The part is supplied on Tape & Reel, consistent with high-volume pick-and-place assembly. No power line protection is claimed — this is a secondary-side transient suppressor, not a primary AC mains protector.