This part is a kind of semiconductor called 2SD2052.

Function of this product has Silicon NPN triple diffusion planar type(For high power amplification).

Manufacturers : Panasonic Semiconductor

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Power Transistors 2SD2052 Silicon NPN triple diffusion planar type For high power amplification Complementary to 2SB1361 Unit: mm q q q q q 16.2±0.5 12.5 3.5 Solder Dip Satisfactory foward current transfer ratio hFE vs. collector current IC characteristics Wide area of safe operation (ASO) High transition frequency fT Optimum for the output stage of a HiFi audio amplifier Full-pack package which can be installed to the heat sink with one screw (TC=25˚C) Ratings 150 150 5 15 9 100 3 150 –55 to +155 Unit V V V A A W ˚C ˚C 0.7 s Features 15.0±0.3 11.0±0.2 5.0±0.2 3.2 21.0±0.5 15.0±0.2 φ3.2±0.1 2.0±0.2 2.0±0.1 0.6±0.2 1.1±0.1 5.45±0.3 10.9±0.5 1 2 3 s Absolute Maximum Ratings Parameter Collector to base voltage Collector to emitter voltage Emitter to base volt [ ... ]

2SD2052 PDF Datasheet Download