Microchip lists the SMAJ9.0E3/TR13 as Active.
9V rail clamp — 16.9V ceiling
This is a Zener-based TVS diode protecting a 9V supply rail. It clamps at 16.9V max under a 29.5A peak pulse current with a 10/1000µs waveform — that 16.9V ceiling is the voltage the downstream circuitry must survive during a transient event.
The part is a general-purpose device with no power-line protection rating — it is intended for signal or low-voltage DC rail transients, not mains-side surge suppression.
