This part is a kind of semiconductor called 2SD1303.

Function of this product has NPN Silicon Epitaxial Planar Transistor.

Manufacturers : SEMTECH

Image and pinout :

Some of the text within the PDF file :

ST 2SD1303 NPN Silicon Epitaxial Planar Transistor for audio muting application. On special request, these transistors can be manufactured in different pin configurations. Features ˙ High emitter-base voltage VEBO=7.5V(min)* ˙ High reverse hFE reverse hFE=20(min) (VCE=2V, IC=4mA) ˙ Low on resistance Ron=0.6Ω (Typ.) (IB=1mA) TO-92 Plastic Package Weight approx. 0.19g Absolute Maximum Ratings (T a = 25 oC) Collector Base Voltage Collector Emitter Voltage Emitter Base Voltage Collector Current Base Current Power Dissipation Junction Temperature Storage Temperature Range Symbol VCBO VCEO VEBO IC IB Ptot Tj TS G S P FORM A IS AVAILABLE Value 25 16 7.5* 300 30 400 125 -55 to +125 Unit V V V mA mA mW OC OC РАДИОТЕХ-ТРЕЙД Тел.: (495) 795-0805 Факс: (495) 234-1603 [ ... ]

2SD1303 PDF Datasheet Download