Tube-number record
HIGH VACUUM DIODE
0 archive entries
HIGH VACUUM DIODE is a tube type in the TubeDatabase archive (class: Power Rectifier). Recorded specifications: brand ITT (International Telephone and Telegraph Corporation), year 1962, construction Diode, base Metal/Glass, socket Special / none, maximum plate voltage 45000 V, and maximum plate dissipation 20000 W. The archive does not yet hold a photographed example of this type.
BrandITT (International Telephone and Telegraph Corporation)
ClassPower Rectifier
BaseSpecial / none
Construction
Primary TypeDiode
Rectifier TypeHigh Vacuum
EnvelopeHeavy wall external anode
Base MaterialMetal/Glass
SectionsSingle
Filament / Heater
MaterialPure tungsten
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Rectifier Service | 45000 V | — | — | — | 3000 mA |
| Surge Limiting Diode Operation | 50000 V | — | — | — | 10000 mA |
Application Notes
The F-8208 is designed for rectifier service or in special circuits where the limited emission characteristics of pure tungsten cathodes are desirable. Air flow up to 35 cfm may be required for seal cooling.
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