This part is a kind of semiconductor called D4515.
Function of this product has Low-frequency amplification shell rated bipolar transistors.
Manufacturers : JILIN SINO
Image and pinout :

Some of the text within the PDF file :
R D 2004.01 1/5 2004.01 2/5 (mA) Ic (A) 10 500mA 450mA 400mA 350mA 300mA 250mA 200mA 5 150mA 100mA 50mA 2 01 - 34 VCE (V) 5 2004.01 3/5 2004.01 4/5 2004.01 5/5 [ ... ]
D4515 PDF Datasheet Download
