Here are some common transistors that come packaged in the TO92 format
Example 2N2222 NPN pinout
2N2222 NPN Transistor pinout
Common low power transistors and their complement
2N2222 (NPN) 2N2907 (PNP)
2N3904 (NPN) 2N3906 (PNP)
2N5401
2N5551
2SC945
A1050
C1815
S8550 (PNP) S8050 (NPN)
S9012 (PNP) S9013 (NPN)
S9014 (NPN) S9015 (PNP)
S9018
Common TO92 MOSFET transistors
TO92 MOSFET's normally have three pins are Source(S) pin 1, Gate(G) pin 2 and Drain(D) pin 3.
2N7000 N-Channel Data Sheet
Rds1.2 Ohms
Vds 60 V
Vgs = 20 V
Id = 200 mA
Pd = 400 mW
VN10 N-Channel Enhancement Mode Data Sheet (Note also available int TO97)
Rds 5 Ohms
Vds 60 V
Vgs = ±30 V
100 Mhz
Id = 310mA
Pd = 900mW at 25C
VN2222 N-Channel Enhancement Mode Data Sheet PDF (Note also available int TO97 and 20% higher power TO237)
Rds 5 to 7.5 Ohms
Vds 60 V
Vgs = ±30 V
100 Mhz
Id = 270mA
Pd = 800mW at 25C