600W bidirectional transient suppressor for 128V rails
It delivers 600W peak pulse power per the 10/1000µs waveform, with a breakdown voltage of 143V and a clamping ceiling of 265V at the peak current of 15A (8/20µs pulse). The bidirectional configuration means a single device protects both polarities — useful for AC-coupled signal lines or bipolar supply buses where a unipolar part would need an orientation check. Mounted in the common DO-214AA (SMB) surface-mount package, it fits standard pick-and-place and reflow processes.
The 143V breakdown is where the device starts to avalanche; it guarantees the clamp engages before the voltage rises to a level that damages downstream silicon. The 265V clamping voltage is the worst-case peak the load sees during a surge: if your downstream components have a 300V absolute maximum, you have roughly 35V of headroom. The 600W peak pulse power rating (10/1000µs) defines the energy the part can absorb in a single event — for shorter pulses like 8/20µs the peak current capability is higher (15A), but the energy scales with pulse width.
The DO-214AA footprint is widely second-sourced across the industry, so if you need to dual-source the protection function, look for a bidirectional TVS with the same standoff voltage and package from other major diode manufacturers.