PDF document of 90.2 KB titled with the part number 2SC3995 and filed as a schematic. The 2SC prefix follows JIS naming for NPN bipolar transistors; the name gives no maker, package or revision. Inside you can expect the ratings table, electrical characteristics and outline drawing. These let a technician identify pins before diode-mode testing, confirm the part is within its limits in the circuit, and choose a compatible replacement. Check the marking on the device against this number before relying on the sheet.
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.