The 1SV328 is covered by this 71 KB PDF, filed under schematics in the index. The prefix follows the JIS semiconductor naming used for diodes, and Toshiba's 1SV parts are varactor tuning diodes. The name carries no package, version or application note. Technicians consult a sheet like this to read the capacitance-to-voltage characteristic, reverse voltage limit and marking code. That data helps when diagnosing a tuned stage that has gone off frequency, but check the board footprint before ordering a part.
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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