Popular transistors.

2N2905 transistor.
Pinout. Datasheet.

Type Designator: 2N2905.
Package: TO-39, 1-emitter, 2-base, 3-collector.
Material of transistor: Si
Polarity: PNP
Total Devise power dissipation |PD|: 0.6W
Collector-base breakdown voltage |VCBO|: 60V
Collector-emitter breakdown voltage |VCEO|: 40V
Emitter-base breakdown voltage |VEBO|: 5V
Maximum collector current |Ic max|: 0.6A
Maximum junction temperature |Tj|: 200 C
Transition frequency (ft) : 200MHz
Emitter Capacitance |Ce|:30pF
Collector Capacitance |Cc|:8pF
Collector-emitter saturation voltage|VCE|:0,4V(IC=150mA,IB=15mA),
1,6V(IC=500mA,IB=50mA)
Base-emitter saturation voltage|VBE|:1,3V(IC=150mA,IB=15mA),
2,6V(IC=500mA,IB=50mA)
Forward current transfer ratio |hFE| : 100-300(IC=150mA)
Turn-on time|t on |:45ns
Turn-off time |t off |:300ns
Noise Figure, (NF): 4dB