7730
2 Tubes in archive
BrandCBS
ClassMedium-Mu Twin Triode
BaseMiniature 9-pin (E9-1)
Filament12.6V @ 150mA
Construction
Primary TypeTwin Triode
EnvelopeT-6 1/2
Base MaterialGold plated base pins
SectionsTwin
Filament / Heater
Heater NotesContinuous-wound coil heater; Series or Parallel operation
Absolute Maximum Ratings
Plate Voltage330 V
Plate Dissipation3 W
Cathode Current20 mA
H-C Voltage200 V
Audio Performance
Key Features
- Gold plated base pins
- Continuous-wound coil heater
- 48 hour burn-in period
- Resistance against interface impedance
- Low noise and microphonism
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier (Section 1) | 100V | 3100 | 6500 | 20 | 11.8mA |
| Class A Amplifier (Section 2) | 250V | 2200 | 7700 | 17 | 10.5mA |
Application Notes
Designed for use in measurement test equipment, instrumentation, and other applications requiring extreme reliability and stable characteristics.
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