7738
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BrandSylvania
ClassReceiving Tube
BaseE7-1, Miniature Button 7-Pin
Filament6.3V @ 225mA
Construction
Primary Typetriode
EnvelopeT-5 1/2
Sections1
Filament / Heater
Heater NotesCoated Unipotential Cathode
Absolute Maximum Ratings
Plate Dissipation5 W
Grid 1 Voltage50 V
Cathode Current40 mA
H-C Voltage200 V
Audio Performance
Key Features
- Miniature high mu triode
- Designed for Continuous Class C Amplifier Service
- 200 megacycle range
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Continuous Class C Service | 200V | 9500 | - | 80 | 12mA |
Application Notes
In Sonobuoy or battery applications where long life is secondary to power output, cathode current rating may be increased to 50 mA and grid current to 15 mA.
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