32. Zener Clamping Diode Selection

Aarav is designing a control board and wants to protect a 5V logic input from voltage spikes. 

To clamp the input voltage to a safe level, he adds a Zener diode across the signal line. 

The clamp should start around 5.1V, and the diode should safely handle small surge energy during clamping. 

He decides to use an SMD diode in SOD-123 package. 

Help him select a suitable diode from DigiKey. 

Make sure it is suitable for voltage clamping, has the correct Zener voltage, and works reliably in industrial temperatures.