Tube-number record
443
0 archive entries
443 is a tube type in the TubeDatabase archive (class: Output Pentode). Recorded specifications: construction Pentode, socket B5 family, maximum plate voltage 250 V, and maximum plate dissipation 5 W. The archive does not yet hold a photographed example of this type.
ClassOutput Pentode
BaseB5 family
Construction
Primary TypePentode
EnvelopeGlass
Filament / Heater
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation5 W
Grid 2 Voltage200 V
Audio Performance
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A | 250 V | 2000 | 40000 | — | 20 mA |
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