Clamping and peak-pulse ratings
The 1.5SMC6.8CA: At 10.5V maximum clamping voltage under the 10/1000 µs surge waveform, the downstream circuit sees a hard ceiling during a transient event — the 144.8A peak pulse current rating confirms the device survives a significant surge without going into thermal runaway. 1.5kW peak pulse dissipation in the DO-214AB package is the headline rating for this series; the clamping voltage at 144.8A is the number that tells the circuit designer whether their protected node stays within its absolute-maximum during the surge event.
Temperature and package
DO-214AB (SMCJ) is the standard SMC package with a land-pattern footprint compatible across multiple TVS manufacturers, which matters for second-source qualification — the land pattern alone does not guarantee electrical equivalence, but it removes the board-spin variable from the layout. Surface-mount termination with the typical tin-lead finish supports reflow-profile assembly; the tape-and-reel and cut-tape options cover both production run and prototype quantities.
Bidirectional single-channel TVS — when protecting an AC node or a rail where polarity reversal is possible, the bidirectional configuration avoids the forward-conduction asymmetry that a unidirectional device would introduce.