Datasheet in PDF format, 172 KB, for a part designated SDT2N60. The 2N60 portion is a common marking for 2 A, 600 V N-channel power MOSFETs, but confirm the ratings and package against the document itself. Parts like this often appear in power supply primary stages, so the datasheet helps verify gate, drain and source pinout, check the transistor with a meter for shorts, and pick a substitute with equal or higher voltage and current ratings.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @datasheet_technar_org. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)