Component datasheet for the 2SC4541, a part number following the Japanese JIS scheme where the 2SC prefix marks an NPN bipolar transistor. The index lists it as a schematic, but the name points to a manufacturer data sheet in PDF form, 170 KB. Use it to check maximum voltage and current ratings, gain, package outline and pin order before fitting a replacement. Confirm the marking on the original part and compare the pinout, since equivalents can differ in lead order.
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.