1.5kW bidirectional transient suppressor for 111V rails
The 1.5SMC130CA-E3/9AT: It clamps transients at 179V maximum and has a reverse standoff voltage of 111V, meaning it sits across a 100V or 110V DC rail and stays transparent until a surge exceeds the threshold, then shunts the energy to protect downstream silicon. With a single bidirectional channel, this part replaces two unidirectional TVS diodes in back-to-back configuration, saving board space and reducing component count on the bill of materials.
Package and reflow fit
Housed in a DO-214AB (SMC) surface-mount package, the 1.5SMC130CA-/9AT mounts directly to a PCB pad pattern shared with the SMCJ footprint family. The tape-and-reel packaging (/9AT suffix) feeds into standard 13-inch reels for automated pick-and-place — store the reels dry, as the JEDEC moisture sensitivity level for this body size typically requires a floor-life bake if the humidity indicator card shows pink. The operating junction temperature range spans -65°C to 150°C, covering cold-start automotive and outdoor telecom enclosures without derating the peak pulse power at the low end.
Sourcing and compliance posture
The 1.5SMC130CA-/9AT carries no power line protection rating, so it is intended for signal and DC rail transient suppression, not AC mains primary-side clamping.