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Small signal BJT (Bipolar junction transistor)

Image Part # & Datasheet Description Distributor
2222_t.jpg PN2222 General purpose NPN - EBC
30V to 40V, 600 mA to 1 A
Complement of PN2907
DIFFERENT PINOUT THAN P2N2222!
Mouser Digikey
" P2N2222 General purpose NPN - CBE
40V 600 mA
DIFFERENT PINOUT THAN PN2222!
Mouser Digikey
" PN2907 General purpose PNP - EBC
40 V 800 mA
Complement of PN2222
Mouser Digikey
" 2N4401 General purpose NPN - EBC
40V 500 mA
Complement of 2N4403
Mouser Digikey
" 2N4403 General purpose PNP - EBC
40V 500 mA
Complement of 2N4401
Mouser Digikey
" 2N3904 General purpose NPN - EBC
40V 100 mA
Complement of 2N3906
Lower noise than many general purpose NPN
Mouser Digikey
" 2N3906 General purpose PNP - EBC
40V 100 mA
Complement of 2N3904
Lower noise than many general purpose PNP
Mouser Digikey

Power BJT (Bipolar junction transistor)