Popular transistors.

BFT92 transistor.
Pinout. Datasheet.

Marking code: 1Wp, 1Ws, w1p.
Package: SOT-23, 1-collector, 2-emitter, 3-base.
Material of transistor: Si
Polarity: PNP
Total Devise power dissipation |PD|: 0.3 W(at ambient temperature ≤ + 25 ?)
Collector-base breakdown voltage |VCBO|: 20V
Collector-emitter breakdown voltage |VCEO|: 15V
Emitter-base breakdown voltage |VEBO|: 2V
Maximum collector current |Ic max|: 25mA
Maximum junction temperature |Tj|: +150 ?C
Transition frequency (ft) : 5GHz(typ)
Collector Capacitance|Cc|:0,75pF(typ.)
Forward current transfer ratio |hFE| : 20-50,(IC= 14mA,VCE=10V),
BC846A Datasheet (PDF)