Tube-number record
6669/6AQ5
0 archive entries
6669/6AQ5 is a tube type in the TubeDatabase archive (class: Beam Power Pentode). Recorded specifications: brand Sylvania, construction Pentode, socket Miniature 7-pin (B7G), maximum plate voltage 250 V, and maximum plate dissipation 12 W. The archive does not yet hold a photographed example of this type.
BrandSylvania
ClassBeam Power Pentode
BaseMiniature 7-pin (B7G)
Filament6.3 V @ 450 mA
Construction
Primary TypePentode
EnvelopeT-5 1/2
Sections1
Filament / Heater
Heater NotesDesigned for mobile operation
Absolute Maximum Ratings
Plate Voltage250 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Single Tube Class A1 (180V) | 180 V | 3700 | 58000 | — | 29 mA |
| Single Tube Class A1 (250V) | 250 V | 4100 | 52000 | — | 45 mA |
| Push-Pull Class AB1 | 250 V | — | — | — | 70 mA |
Application Notes
The 6669/6AQ5 may be operated without serious degradation under normal variations in supply voltage as encountered with automotive electrical systems.
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