1500W bidirectional transient suppressor for 33V rails
It delivers 1500W peak pulse power (1.5kW) across a 10/1000µs waveform, with a clamping voltage of 69.7V at the peak pulse current of 143A (8/20µs waveform).
Voltage protection window for a 33V bus
The reverse standoff voltage is 33V, meaning the diode draws negligible leakage current at normal operating levels. This window ensures the protected rail sees no more than 69.7V during a surge event, which is compatible with 33V-rated downstream components that have a typical absolute maximum of 40V to 50V.
Peak pulse current and waveform handling
Rated for 143A peak pulse current under the 8/20µs waveform, this device handles short-duration lightning or switching transients common on power and signal lines. The 1500W rating at 10/1000µs gives the designer a margin for longer-duration surges — the actual energy dissipation depends on the pulse shape and duty cycle.
Package and mounting for board-level protection
Housed in a DO-214AB (SMC) surface-mount package, the SMCJ33CA-TR is suited for automated assembly on standard PCB footprints.