1N4742A

Zener diode.

Tutorial / documentation

Transistors & diodes

First tests with 1N4742A

1. Identify the exact 1N4742A variant, package and manufacturer documentation.
2. Identify power, ground and signal pins in the documentation. Assemble the circuit with power disconnected.
3. Follow the manufacturer’s evaluation circuit. Use a current-limited low-voltage supply and the recommended logic levels.
4. Mesurez les signaux d’entrée et de sortie. Comparez leur comportement à la fonction : diode zener.