
Tube-number record
6664/6AB4
0 archive entries
6664/6AB4 is a tube type in the TubeDatabase archive (class: High-Mu Triode). Recorded specifications: brand RCA, year 1962, construction Triode, socket Miniature 7-pin (B7G), maximum plate voltage 330 V, and maximum plate dissipation 2.9 W. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassHigh-Mu Triode
BaseMiniature 7-pin (B7G)
Filament6.3 V @ 150 mA
Construction
Primary TypeTriode
EnvelopeT5-1/2
SectionsSingle
Filament / Heater
Heater NotesWhen operated from storage-battery systems, heater voltage variations up to +/- 20% may be tolerated for short periods.
Absolute Maximum Ratings
Plate Voltage
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier | 100 V | 4000 | 15000 | 60 | 3.7 mA |
| Class A1 Amplifier | 250 V | 5500 | 10900 | 60 | 10 mA |
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