PDF documentation, 195 KB, for the 2SB907. Japanese JIS numbering assigns the 2SB prefix to PNP transistors meant for low-frequency applications. The name carries the part number only, without maker or variant. A data sheet like this generally provides ratings, characteristic curves and a case drawing. Use it when diagnosing a failed driver or power stage, confirming the emitter, base and collector positions, and choosing a replacement whose voltage, current and dissipation ratings meet or exceed the original.
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.