This part is a kind of semiconductor called 2SB1647.

Function of this product has Silicon PNP Epitaxial Planar Transistor(Audio/ Series Regulator and General Purpose).

Manufacturers : Sanken electric

Image and pinout :

Some of the text within the PDF file :

(7 0 Ω ) E Darlington sAbsolute maximum ratings (Ta=25°C) Symbol VCBO VCEO VEBO IC IB PC Tj Tstg 2SB1647 –150 –150 –5 –15 –1 130(Tc=25°C) 150 –55 to +150 Unit V V V A A W °C °C 2SB1647 sElectrical Characteristics Symbol ICBO IEBO V(BR)CEO hFE VCE(sat) VBE(sat) fT COB Conditions VCB=–150V VEB=–5V IC=–30mA VCE=–4V, IC=–10A IC=–10A, IB=–10mA IC=–10A, IB=–10mA VCE=–12V, IE=2A VCB=–10V, f=1MHz 2SB1647 –100max –100max –150min 5000min∗ –2.5max –3.0max 45typ 320typ V V MHz pF 20.0min 4.0max 2 3 B Equivalent circuit C Silicon PNP Epitaxial Planar Transistor (Complement to type 2SD2560) Application : Audio, Series Regulator and General Purpose (Ta=25°C) Unit 5.0±0.2 2.0 1.8 External Dimensions MT-100(TO3P) 15.6±0.4 9.6 4.8±0.2 2.0±0.1 [ ... ]

2SB1647 PDF Datasheet Download