.PDF datasheets for electronic components, including RF modules, transistors, integrated circuits, and amateur equipment.

European electron tube charts with characteristic data, basing diagrams, and application information. Includes Russian types.

Original datasheets are scanned mostly from the 1966 Electron Devices Reference (in Russian) and saved as .GIF graphics.

Data search, pin-outs and substitutes for many tubes. Includes links to schematics.