Datasheet-style PDF, 19.8 KB, for the 1SV298 component, listed in the schematics category. By its 1SV prefix this is a variable-capacitance diode, the kind found in tuners, PLL oscillators and voltage-controlled filters. The small size suggests a brief summary of ratings, characteristics and outline drawing. Before replacing a part on a board, confirm the marking code and package match and note that an H-suffixed variant also exists in this series, which may not be a drop-in equivalent.
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.
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The standard format for schematics, block diagrams, power-sequence charts and service manuals.