Microchip lists the SMAJ9.0CE3/TR13 as Active.
9V rail protection with 500W surge capacity
This Zener TVS clamps transients on a 9V nominal rail with a minimum breakdown voltage of 10V and a maximum clamping voltage of 16.9V at the peak pulse current of 29.5A. The 500W peak pulse power rating gives you a solid margin for industrial surge events — think motor start or inductive load dump on a 9V supply.
Bidirectional, DO-214AC, surface-mount
A single bidirectional channel means one component protects both polarities on the line — handy for AC-coupled or differential signals where the transient can swing either way.
Temperature range and RoHS compliance
The part is RoHS-compliant per Microchip's standard — no lead, no conflict with EU directives for new equipment.