Reference data for the 1T417 transistor in a 47.5 KB PDF, filed in the schematic section. The 1T prefix marks a germanium transistor in the old Soviet naming system. The sheet provides lead layout, limiting values and gain characteristics useful for diagnosing failed stages in vintage gear or picking an equivalent. When testing, remember germanium parts show higher leakage and lower junction voltage than silicon, and check the package drawing so collector and emitter are not swapped on replacement.
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.