Tube-number record
12CA5
0 archive entries
12CA5 is a tube type in the TubeDatabase archive (class: Beam Pentode). Recorded specifications: brand TUNG-SOL, year 1957, construction Beam tetrode / beam power, base Glass, socket Miniature 7-pin (B7G), maximum plate voltage 130 V, and maximum plate dissipation 5 W. The archive does not yet hold a photographed example of this type.
BrandTUNG-SOL
ClassBeam Pentode
BaseMiniature 7-pin (B7G)
Filament12.6 V @ 600 mA
Construction
Primary TypeBeam tetrode / beam power
EnvelopeT-5 1/2
Base MaterialGlass
SectionsSingle
Filament / Heater
Warm-up Time11s
Heater NotesThermal characteristics controlled for 600mA series operation.
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier | 110 V | 8100 | 16000 | — | 32 mA |
| Class A1 Amplifier | 125 V | 9200 | 15000 | — | 37 mA |
Application Notes
Designed for audio-frequency power output stage in series heater television and radio receivers.
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