This part is a kind of semiconductor called 2SD1616.
Function of this product has NPN Transistors.
Manufacturers : Weitron Technology
Image and pinout :

Some of the text within the PDF file :
2SD1616 2SD1616A NPN Transistors TO-92 1. EMITTER 2. COLLECTOR 3. BASE 1 2 3 ABSOLUTE MAXIMUM RATINGS (Ta=25 C) Rating Collector-Emitter Voltage Collector-Base Voltage Emitter-Base Voltage Collector Current Total Device Dissipation TA=25 C Junction Temperature Storage, Temperature Symbol VCEO VCBO VEBO IC PD Tj Tstg 2SD16116 50 60 6.0 1.0 0.75 150 -55 to +150 2SD1616A 60 120 Unit Vdc Vdc Vdc Adc W C C ELECTRICAL CHARACTERISTICS Characteristics Collector-Emitter Breakdown Voltage (IC= 2.0 mAdc, IB=0) Collector-Base Breakdown Voltage (IC= 10 uAdc, IE=0) Emitter-Base Breakdown Voltage (IE= 10 uAdc, IC=0) Collector Cutoff Current (VCB=60 Vdc, IE=0) Emitter Cutoff Current (VEB= 6.0 Vdc, I C=0) 2SD1616 2SD1616A 2SD1616 2SD1616A Symbol V(BR)CEO V(BR)CBO V(BR)EBO ICBO IE [ ... ]
2SD1616 PDF Datasheet Download
