Datasheet-style PDF named after the 2SA1700, a Japanese standard transistor number, stored in the schematic category of the index. Per the JIS convention, 2SA parts are PNP transistors for high-frequency circuits. The 76 KB file gives no extra details in its name, so expect the usual contents: absolute maximum ratings, electrical characteristics, hFE grouping and package dimensions. Use it when identifying a damaged part, picking an equivalent, or checking that measured junction readings match the expected polarity.
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.