CCA
1 Tube in archive
BrandSiemens
ClassDouble Triode
BaseNoval
Filament6.3V @ 300mA
Construction
Primary TypeTriode
EnvelopeGlass
Base MaterialGlass
SectionsDouble
Filament / Heater
Heater NotesIndirectly heated, AC or DC
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation1.5 W
Grid 1 Voltage-400 V
Cathode Current20 mA
H-C Voltage100 V
Audio Performance
Key Features
- Long service life (> 10000 hrs)
- High reliability
- Low noise
- Tight tolerances
- Interface-layer-free special cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Universal | 90V | 12500 | 2600 | 33 | 15mA |
| Additive Mixer | 90V | 3500 | 7000 | - | 7.7mA |
Application Notes
Particularly suitable for Cascode circuits in LF, IF, and HF amplifiers, as well as for oscillators, frequency multipliers, mixer stages, cathode followers, bistable multivibrators, and high-frequency pulse circuits.
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