Clamp voltage and surge current — the numbers that matter
This bidirectional Zener TVS clamps at 16.9V max while conducting 35.5A of peak pulse current (10/1000µs waveform). For a 9V rail, that clamp voltage leaves enough margin below a typical 12V-15V absolute maximum rating on downstream ICs.
With a single bidirectional channel, this TVS clamps overvoltage transients of either polarity.
Housed in a DO-214AA (SMB) package, the SMBJ9.0CE3/TR13 is a surface-mount device with a standard footprint that reflows cleanly under a hot-air station — the package's thermal mass is low enough that a 350°C nozzle at moderate airflow lifts it without cooking the board. Rated for junction temperatures from -65°C to 150°C, it covers the full industrial and military temperature envelope — no derating worry for outdoor telecom cabinets or engine-bay electronics.