1500W bidirectional TVS for 78V rails
The SMCJ78CA-13-F: With a 78V reverse standoff voltage, it clamps transients to 126V maximum at 11.4A peak pulse current. The single bidirectional channel protects against both positive and negative surges on the same line, simplifying board layout for symmetrical rails like 78V DC buses or telecom supplies.
Housed in a DO-214AB (SMC) surface-mount package, the device occupies a standard footprint with a solderable tab for thermal management. The SMC package is larger than the SMA/SMB siblings, offering lower thermal resistance for the 1500W rating.
Sourcing and lifecycle posture
The base product number SMCJ78 covers both unidirectional and bidirectional variants; the CA suffix identifies the bidirectional version. Tape & Reel packaging (13-inch reel) is standard for volume assembly.
