400W peak pulse power in an automotive-grade Zener TVS
It delivers 400W peak pulse power (10/1000µs waveform) with a 30V reverse standoff voltage, making it a primary clamp for 24V and 28V nominal rails in vehicle electronics. The 33.3V minimum breakdown voltage and 64.3V maximum clamping at 36A (8/20µs) define a clean protection window for sensitive downstream ICs.
AEC-Q101 qualification and temperature range
DO-214AC SMA package — board-level fit
Housed in a DO-214AC (SMA) surface-mount package, the SM4T35AY uses a standard footprint shared across the SM4TY series. The SMA body is suited for reflow soldering and automated pick-and-place. No power line protection is provided — this is a unidirectional transient suppressor for signal or low-side power rails, not a mains-side clamp.