Data sheet material for the 2SC3772 NPN transistor in a 128 KB PDF, filed among schematics. The 2SC prefix follows the JIS convention for Japanese bipolar transistors. The document should list voltage and current ratings, power dissipation, gain grading and a package outline. In repair work it helps determine lead order for meter tests and pick a compatible substitute with equal or better specifications. Check the printed part number and any suffix letter on the component before relying on the values.
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.