Tube-number record
403
0 archive entries
403 is a tube type in the TubeDatabase archive (class: Pentode). Recorded specifications: construction Pentode, socket Miniature 7-pin (B7G), maximum plate voltage 180 V, and maximum plate dissipation 1.7 W. The archive does not yet hold a photographed example of this type.
ClassPentode
BaseMiniature 7-pin (B7G)
Filament6.3 V @ 175 mA
Construction
Primary TypePentode
EnvelopeGlass
Filament / Heater
Absolute Maximum Ratings
Plate Voltage180 V
Plate Dissipation1.7 W
Grid 2 Voltage140 V
Audio Performance
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode | 120 V | 5000 | — | 2500 | 7.5 mA |
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