Tube-number record
20
0 archive entries
20 is a tube type in the TubeDatabase archive (class: Power Amplifier Triode). Recorded specifications: brand RCA, construction Triode, socket 4-pin, and maximum plate voltage 135 V. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassPower Amplifier Triode
Base4-pin
Construction
Primary TypeTriode
EnvelopeT-8
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage135 V
Audio Performance
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Operation 1 | 90 V | 415 | 8000 | 3.3 | 3 mA |
| Operation 2 | 135 V | 525 | 6300 | 3.3 | 6.5 mA |
Datasheets
Datasheet: 20.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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