Vacuum tube equivalents

- equivalents for thermionic valve or vacuum tube substitution or replacement including the diode, triode, tetrode, pentode, heptode, etc ...

Thermionic valve / vacuum tube technology includes:

    •  Vacuum tube / thermionic valve basics
    •  Valve / tube electrodes
    •  Valve / tube numbering systems
    •  Valve / tube equivalents
    •  Common valve / tube pin connections
    •  TWT - travelling wave tube
    •  Photomultiplier

With the very large number of vacuum tubes or thermionic valves that were produced and as a result of the multiple vacuum tube numbering systems that were in use, there are generally equivalents for most types of tube.

In most cases the tubes manufactured to the European system have an exact equivalent tube in the American system and vice versa. These equivalents are very useful when replacements or substitutions are required.

This list is offered in good faith, no liability can be accepted for errors.

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