This part is a kind of semiconductor called D2394.

Function of this product has 2SD2394.

Manufacturers : Rohm

Image and pinout :

Some of the text within the PDF file :

2SD2394 Transistors For Power Amplification (60V, 3A) 2SD2394 zStructure NPN Silicon Triple Diffused 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 amplifier zComplements PNP 2SB1565 NPN 2SD2394 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 80 60 7 3 6 2 25 150 −55 to +150 Unit V V V A(DC) A(Pulse)∗1 W(Ta=25°C) W(Tc=25°C) °C °C zPackaging spec [ ... ]

D2394 PDF Datasheet Download