Transistor datasheet in PDF form, 188 KB, named 2SC5352 without any device or board reference. The 2SC prefix comes from the Japanese JIS standard and denotes an NPN high-frequency bipolar transistor. Expect absolute maximum ratings, characteristic tables and curves, and a dimensioned package drawing showing pin order. Such information helps when diagnosing a shorted or open junction and when sourcing a compatible substitute. Any PDF reader will open it; verify that the body code and package of the fitted part match.
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 @cyberlanelectonik. 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.