6945
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BrandSylvania
ClassBeam Power Pentode
BaseSubminiature Button Flexible Leads
Filament6.3V @ 350mA
Construction
Primary TypeBeam Power Pentode
EnvelopeT-3
SectionsSingle
Filament / Heater
Heater NotesDesigned for regulations of heater voltage to its center rated value of 6.3V.
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation3 W
Grid 2 Voltage150 V
Grid 1 Voltage-55 V
Cathode Current40 mA
H-C Voltage200 V
Audio Performance
Typical THD11%
Power Output1.22 W
Key Features
- Guided missile service
- Subminiature design
- High resistance to interelement leakage
- Stable performance under mechanical shock
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Connected (Average) | 100V | 3500 | 20000 | - | 25mA |
| Triode Connected (Average) | 100V | 3700 | 1500 | 5 | 26mA |
| Class A1 Amplifier (Single Tube) | 250V | - | - | - | 14.2mA |
Application Notes
Specifically designed for guided missile service where severe mechanical shock, vibration, and high temperature are encountered. Reliability is tied to heater voltage regulation.
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