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Tube-number record
CCA
1 archive entry
BrandSiemens
ClassDouble Triode
BaseNoval (B9A)
Filament6.3 V @ 300 mA
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 | 90 V | 12500 | 2600 | 33 | 15 mA |
| Additive Mixer | 90 V | 3500 | 7000 | — | 7.7 mA |
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.
Datasheets
Datasheet: CCa.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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