Popular transistors.

FMMT2222A transistor.
Pinout. Datasheet.

Marking code: 1P
Package: SOT-23, 1-collector, 2-emitter, 3-base.
Material of transistor: Si
Polarity: NPN
Total Devise power dissipation |PD|: 0.33 Watt
Collector-base breakdown voltage |VCBO|: 75V
Collector-emitter breakdown voltage |VCEO|: 40V
Emitter-base breakdown voltage |VEBO|: 6V
Maximum collector current |Ic max|: 0.6A
Maximum junction temperature |Tj|: +150 C
Transition frequency (ft) : 300MHz(min)
Collector Capacitance|Cc|:8pF(max.)
Collector-emitter saturation voltage|VCE|:0,3V(IC=150mA,IB=15mA)
Base-emitter saturation voltage|VBE|:1,2V(IC=150mA,IB=15mA)
Forward current transfer ratio |hFE| : 100-300,(IC=150mA,VCE=10V),
FMMT2222A Datasheet (PDF)