Tube-number record
14AF7
0 archive entries
14AF7 is a tube type in the TubeDatabase archive (class: Medium-Mu Twin Triode). Recorded specifications: brand RCA, year 1948, construction Dual triode, socket Loctal, maximum plate voltage 300 V, and maximum plate dissipation 2.5 W. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassMedium-Mu Twin Triode
BaseLoctal
Filament12.6 V @ 159.9 mA
Construction
Primary TypeDual triode
EnvelopeT-9
Sections2
Filament / Heater
Heater NotesNominal voltage: 14.0V, Nominal current: 160mA
Absolute Maximum Ratings
Plate Voltage300 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Condition 1 (Grid Bias) | 100 V | 2600 | 6500 | 17 | 10.8 mA |
| Condition 2 (600 Ohm Cathode Bias) | 100 V | 1900 | 8400 | 16 | 5 mA |
| Condition 3 (1100 Ohm Cathode Bias) | 250 V | 2100 | 7600 | 16 |
Application Notes
Unipotential cathodes. Values are for each unit.
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