This part is a kind of semiconductor called D2220.
Function of this product has 2SD2220.
Manufacturers : Panasonic
Image and pinout :

Some of the text within the PDF file :
Power Transistors 2SD2220 Silicon NPN triple diffusion planar type Darlington For low-frequency amplification s Features q Suitable for the driver circuit of a motor, a printer hammer and like that, since this transistor is designed for the high forward current transfer ratio hFE q A shunt resistor is omitted from the driver q Allowing supply with the radial taping 10.8±0.2 7.5±0.2 Unit: mm 4.5±0.2 3.8±0.2 90° 0.65±0.1 0.85±0.1 2.5±0.1 0.7±0.1 1.0±0.1 0.7±0.1 0.8C 0.8C 16.0±1.0 s Absolute Maximum Ratings (TC=25˚C) Parameter Symbol Ratings Collector to base voltage Collector to emitter voltage Emitter to base voltage Peak collector current Collector current Collector power dissipation (TC=25°C) Junction temperature Storage temperature VCBO VCEO VEBO ICP IC PC [ ... ]
D2220 PDF Datasheet Download
