This part is a kind of semiconductor called SSTA13.

Function of this product has NPN small signal transistor.

Manufacturers : Rohm

Image and pinout :

Some of the text within the PDF file :

SSTA13 Transistors NPN small signal transistor SSTA13 zFeatures 1) High Current Gain. zDimensions (Unit : mm) SSTA13 zPackaging specifications (3) 2.9 0.4 0.95 0.45 Type SSTA13 Code Basic ordering unit (pieces) T116 3000 (1)Emitter (2)Base (3)Collector (2) (1) 0.95 0.95 1.9 1.3 2.4 Package Taping 0.15 Each lead has same dimensions Abbreviated symbol : RIM zAbsolute maximum ratings (Ta=25°C) Parameter Collector-base voltage Collector-emitter voltage Emitter-base voltage Collector current Collector power dissipation Junction temperature Storage temperature Symbol VCBO VCES VEBO IC PC Tj Tstg Limits 30 30 10 0.3 0.2 150 −55 to 125 Unit V V V A W °C °C zElectrical characteristics (Ta=25°C) Parameter Symbol Min. 30 30 10 − − − − 5000 DC curre [ ... ]

SSTA13 PDF Datasheet Download