Tube-number record
CK5755
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BrandRaytheon
ClassDouble Triode
BaseNoval (B9A)
Filament6.3 V @ 360 mA
Construction
Primary TypeDual triode
EnvelopeT-6 1/2 Glass
Sections2
Filament / Heater
Heater NotesParallel connection: 6.3V 360mA; Series connection: 12.6V 180mA
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation1 W
H-C Voltage75 V
Audio Performance
Key Features
- Special cathode springs to reduce microphonic response
- Microphonic stability test for balance
- 150 hour stabilization
- Low drift
- Electrical stability
- Plate current balance
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Parallel Heater Connection | 180 V | 1500 | — | — | 2.2 mA |
| Parallel Heater Connection | 110 V | 500 | 140000 | 70 | 0.15 mA |
Application Notes
Designed for precision DC amplifiers, computers, and regulated power supplies requiring very stable characteristics.
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