Tube-number record
3A/109A
0 archive entries
3A/109A is a tube type in the TubeDatabase archive (class: Repeater Triode). Recorded specifications: construction Triode, socket 4-pin, and maximum plate voltage 190 V. The archive does not yet hold a photographed example of this type.
ClassRepeater Triode
Base4-pin
Construction
Primary TypeTriode
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialOxide-coated
Absolute Maximum Ratings
Plate Voltage190 V
Audio Performance
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical | 130 V | 500 | 12000 | 6 | — |
Application Notes
3A/109A is for replacement purposes only
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