Reference sheet for the 2SK937 transistor, a 79.9 KB PDF. Parts in the 2SK range are N-channel field-effect transistors under the Japanese JIS designation. The name states nothing else, so treat it as a standard datasheet with ratings tables, curves and package information. During repair it helps confirm pinout, voltage and current limits, and suitability of equivalents. View it in any PDF reader. Compare footprint and specifications carefully, especially in switching power supplies where an underrated part fails fast.
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.