6788
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BrandSylvania
ClassPremium Subminiature Sharp-Cutoff Pentode
BaseEB10 Subminiature Button Flexible Leads
Filament6.3V @ 175mA
Construction
Primary TypePentode
EnvelopeT-3
Base MaterialGlass
SectionsSingle
Filament / Heater
Heater NotesVoltage range: 5.5V to 6.9V
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation0.5 W
Grid 2 Voltage150 V
Grid 1 Voltage-55 V
Cathode Current5.5 mA
H-C Voltage200 V
Audio Performance
Key Features
- Reliable operation under severe shock and vibration
- Extraordinary freedom from interelement shorts
- High resistance to interelement leakage
- Designed for guided missile service
- Radiation resistant
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Amplifier | 100V | 1100 | 1200000 | - | 0.7mA |
Application Notes
The 6788 is designed as a high gain audio amplifier or regulator amplifier where high plate loads are desired at low plate currents. Characterized by high resistance to interelement leakage.
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