150V standoff, 1.5kW peak pulse – the TVS that keeps a 150V rail clean
Its reverse standoff voltage of 150V means the protected line sees no leakage at normal operating voltage; the breakdown triggers at a minimum of 167V, giving a 17V margin before clamping begins. Peak pulse power is rated at 1500W (1.5kW) for the standard 10/1000µs waveform, which covers most industrial surge events from inductive kickback or lightning-coupled transients.
Clamping voltage 268V at 5.6A – the headroom check for downstream silicon
That is the voltage the protected component sees during the surge. If the downstream MOSFET or DC-DC converter has a Vds rating below 268V, this TVS will not protect it — the part behind it must withstand at least that clamp level. The 5.6A peak pulse current is the current the TVS shunts at that clamp voltage; it is not a continuous rating.
Active production, DO-214AB SMC package – no LTB pressure
The package is DO-214AB (SMC), a standard surface-mount footprint shared across the SMCJ family.