HUAREW High Quality BJT Assortment Kit.

The principle of BJT (bipolar junction transistor): The work of a bipolar
junction transistor involves both the flow of electrons and holes,
so it is called bipolar, so it is also called bipolar Carrier transistor
Thismode of operation is different from unipolar transistors
suchas field-effect transistors, which only involve the drift of a
single type of carrier. The boundary between two different dopant
aggregation regions is formed by a PN junction.

Packing quantity:
NPN:
C945 x 20 Pcs
C1815 x 20Pcs
S8050 x 20 Pcs
S9013 x 20 Pcs
S9014 x 20 Pcs
S9018 x 20 Pcs
2N2222 x 20 Pcs
2N3904 x 20 Pcs
2N5551 x 20 Pcs

PNP:
A1015 x 20 Pcs
S8550 x 20 Pcs
S9012 x 20 Pcs
S9015 x 20 Pcs
2N3906 x 20 Pcs
2N5401 x 20 Pcs

BJT uses: Bipolar transistors can amplify signals, and have better
power control, high-speed work and durability, so it is often used to
form amplifier circuits, or drive speakers, motors and other equipment,
and is widely used Applications in aerospace engineering,
medical equipment and robotics.