This part is a kind of semiconductor called B1565.

Function of this product has Power Transistor.

Manufacturers : Rohm

Image and pinout :

Some of the text within the PDF file :

2SB1565 Transistors For Power Amplification (−60V, −3A) 2SB1565 zStructure PNP Silicon Epitaxial Planar Transistor zExternal dimensions (Unit : mm) TO-220FN 10.0 4.5 φ3.2 2.8 14.0 zFeatures 1) Low VCE (sat). 2) Excellent electrical characteristics of DC current Gain hFE. 3) Wide SOA. (1)Base (2)Collector (3)Emitter 15.0 12.0 8.0 5.0 1.2 1.3 0.8 2.54 (1) (2) (3) 2.54 0.75 2.6 zApplications Low frequency power amplifier Stereophonic output Stabilization of power supply zAbsolute maximum ratings (Ta=25°C) Parameter Collector-base voltage Collector-emitter voltage Emitter-base voltage Collector current DC Pulse Symbol VCBO VCEO VEBO IC ICP PC Tj Tstg Limits −60 −60 −7 −3 −6 2 25 150 −55 to +150 Unit V V V A A ∗1 zComplements PNP 2SB1565 NPN 2SD2394 zPackagin [ ... ]

B1565 PDF Datasheet Download