Datasheet-type PDF for the 2SB1120, 79.3 KB, placed in the schematic collection. The 2SB prefix under the Japanese JIS standard identifies a PNP transistor intended for low-frequency use. Contents of such files typically include absolute maximum ratings, hFE classification, thermal data and the package drawing with lead identification. It is useful for checking a transistor out of circuit with a multimeter, confirming which pin is the collector, and making sure a replacement part matches polarity, package and ratings.
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.