This part is a kind of semiconductor called 2SD2345.

Function of this product has Silicon NPN epitaxial planer type(For low-frequency amplification).

Manufacturers : Panasonic Semiconductor

Image and pinout :

Some of the text within the PDF file :

Transistor 2SD2345 Silicon NPN epitaxial planer type For low-frequency amplification Unit: mm 1.6±0.15 s Features q q q q 0.4 0.8±0.1 0.4 High foward current transfer ratio hFE. Low collector to emitter saturation voltage VCE(sat). High emitter to base voltage VEBO. Low noise voltage NV. 1.6±0.1 1.0±0.1 0.5 1 0.5 3 2 0.45±0.1 0.3 0.75±0.15 Parameter Collector to base voltage Collector to emitter voltage Emitter to base voltage Peak collector current Collector current Collector power dissipation Junction temperature Storage temperature Symbol VCBO VCEO VEBO ICP IC PC Tj Tstg Ratings 50 40 15 100 50 125 125 –55 ~ +125 Unit V V V mA mA mW ˚C ˚C 1:Base 2:Emitter 3:Collector EIAJ:SC–75 SS–Mini Type Package Marking symbol : 1Z s Electrical Characteristics Pa [ ... ]

2SD2345 PDF Datasheet Download