BC557

Small-signal PNP transistor.

Tutorial / documentation

Transistors & diodes

First tests with BC557

  1. Identify the exact BC557 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 : transistor pnp petit signal.

BC557

Small-signal PNP transistor.

  • Identify the exact BC557 variant, package and manufacturer documentation.
  • Identify power, ground and signal pins in the documentation. Assemble the circuit with power disconnected.
  • Follow the manufacturer’s evaluation circuit. Use a current-limited low-voltage supply and the recommended logic levels.
  • Mesurez les signaux d’entrée et de sortie. Comparez leur comportement à la fonction : transistor pnp petit signal.
Technical documentation