Transistors Bipolar - BJT NPN Transistor General Purpose (200mA).

General Purpose Transistor - BC547

This package includes 17 species transistors in common use.It's convenient for you to make some small designs.You could find a suitable one for your type!

BD139 NPN Transistor

This is the BC337, an NPN silicon BJT (Bipolar Junction Transistor). This little transistor can help in your project by being used to help drive large loads or amplifying or switching applications. The BC337 is specifically rated at 50V and 800mA max.

These are very common, high quality BJT NPN transistors made by ST Micro.

Transistors are powerful little electronic switches, and when Adafruit's little NPN transistors aren't power enough for your project, Adafruit have been known to use these beefy...

Transistors are powerful little electronic switches, and Adafruit really like these NPN transistors whenever Adafruit need to control medium-power electronics such as small...