BC 557 PNP Transistor.
The BC557 transistor is a general-purpose transistor in a small TO-92 package. It is used in general-purpose switching and amplification 45 V, 100 mA PNP general-purpose transistors.
A common switching transistor. The amps it can handle are more than sufficient for most Arduino or Pi projects.
PNP transistor in a TO-92 package.
NPN complements: BC547
• Low current (max. 100 mA)
• Low voltage (max. 45 V).
• General purpose switching and amplification.
Datasheet BC557 PNP