BC547 Transistor
NPN / 50V / 0.2A / 0.5W TO92

BC549B TRANSISTOR
Sostituisce: BC149 , BC169 , BC173 , BC184 , BC209 , BC319

BC550C Transistor
Sostituisce: 2N930 , 2SC1222 , 2SC1313 , 2SC1328 , BC382 , BC383 , BC384 , BC413 , BC414 , BC550B , BFX93 , LM9014

BC557B Transistor
PNP / 50V / 0.1A / 0.5W

BC558 Transistor
PNP / 30V / 0.2A / 0.5W