This part is a kind of semiconductor called 2SD2374A.

Function of this product has Silicon PNP epitaxial planar type(For power amplification).

Manufacturers : Panasonic Semiconductor

Image and pinout :

Some of the text within the PDF file :

Power Transistors 2SB1548, 2SB1548A Silicon PNP epitaxial planar type For power amplification Complementary to 2SD2374 and 2SD2374A s Features q q q Unit: mm 15.0±0.5 s Absolute Maximum Ratings Parameter Collector to base voltage Collector to 2SB1548 2SB1548A 2SB1548 Symbol VCBO VCEO VEBO ICP IC PC Tj Tstg (TC=25˚C) Ratings –60 –80 –60 –80 –5 –5 –3 25 2 150 –55 to +150 Unit V φ3.2±0.1 13.7±0.2 4.2±0.2 1.4±0.2 1.6±0.2 0.8±0.1 2.54±0.3 3 5.08±0.5 3.0±0.5 High forward current transfer ratio hFE which has satisfactory linearity Low collector to emitter saturation voltage VCE(sat) Full-pack package which can be installed to the heat sink with one screw 9.9±0.3 4.6±0.2 2.9±0.2 2.6±0.1 emitter voltage 2SB1548A Emitter to base voltage Peak collector c [ ... ]

2SD2374A PDF Datasheet Download