12CA5
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BrandTUNG-SOL
ClassBeam Pentode
Base7-pin miniature
Filament12.6V @ 600mA
Construction
Primary TypeBeam Pentode
EnvelopeT-5 1/2
Base MaterialGlass
SectionsSingle
Filament / Heater
Warm-up Time11s
Heater NotesThermal characteristics controlled for 600mA series operation.
Absolute Maximum Ratings
Plate Voltage130 V
Plate Dissipation5 W
Grid 2 Voltage130 V
H-C Voltage200 V
Audio Performance
Typical THD6%
Power Output1.5 W
Key Features
- High sensitivity at low voltage
- Controlled heater warmup
- 600mA series heater
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier | 110V | 8100 | 16000 | - | 32mA |
| Class A1 Amplifier | 125V | 9200 | 15000 | - | 37mA |
Application Notes
Designed for audio-frequency power output stage in series heater television and radio receivers.
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