Bidirectional 78 V TVS with 1.5 kW surge rating
It clamps at 139 V maximum at the peak pulse current of 10.8 A, with a minimum breakdown voltage of 86.7 V.
The 86.7 V minimum breakdown sets the threshold where the TVS starts to avalanche; below that voltage the part is essentially an open circuit. The 139 V maximum clamp is the voltage the protected circuitry sees during a surge event — any downstream component rated below that clamp voltage risks overstress. The 10.8 A peak pulse current is the current the device can sink at the clamp voltage for the 10/1000 µs waveform, defining the maximum surge energy it can absorb without failure.
Temperature range and package — fit for harsh environments
Active production — sourcing without lifecycle risk
The base product number is SMCJ78. Sourced per RFQ against BOM quantity; no stock-holding claim at this desk.