1N4148

Small-signal switching diode.

Tutorial / documentation

Transistors & diodes

First tests with 1N4148

1. Identify the exact 1N4148 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 de commutation petit signal.