What this 1500W bidirectional TVS protects and where it fits
The 1.5SMC36CA-M3/57T is a 1500 W peak pulse power transient voltage suppressor from Vishay's TransZorb series, designed to clamp voltage transients on general-purpose DC power rails and signal lines. The single bidirectional channel handles symmetrical protection — positive or negative polarity transients get clamped the same way, which simplifies layout when the protected line can swing both ways relative to ground.
Package and board-fit for the DO-214AB SMC
No power line protection built in — this is a standalone transient clamp, not a filter.