Tube-number record
6676/6CB6A
0 archive entries
6676/6CB6A is a tube type in the TubeDatabase archive (class: Sharp-Cutoff Pentode). Recorded specifications: brand RADIO CORPORATION OF AMERICA, year 1962, construction Pentode, socket Miniature 7-pin (B7G), maximum plate voltage 330 V, and maximum plate dissipation 2.3 W. The archive does not yet hold a photographed example of this type.
BrandRADIO CORPORATION OF AMERICA
ClassSharp-Cutoff Pentode
BaseMiniature 7-pin (B7G)
Filament6.3 V @ 0.3 mA
Construction
Primary TypePentode
EnvelopeT5-1/2
Sectionssingle
Filament / Heater
MaterialCoated Unipotential
Heater NotesDesigned for mobile-communications equipment; heater voltage variations of +/- 20% tolerated for short periods.
Absolute Maximum Ratings
Plate Voltage330 V
Plate Dissipation2.3 W
Grid 2 Voltage330 V
H-C Voltage200 V
Audio Performance
Key Features
- Sharp-Cutoff
- Internal Shield
- Mobile-Communications Equipment Reliability
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier (Fixed Bias) | 125 V | — | — | — | 2.8 mA |
| Class A1 Amplifier (Cathode Bias) | 125 V | 8000 | 280000 | — | 13 mA |
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