7887
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BrandSYLVANIA
ClassPremium Subminiature Double Triode
Base8-10 Subminiature Button Flexible Leads
Filament26.5V @ 90mA
Construction
Primary Typetriode
EnvelopeT-3
Sectionsdouble
Filament / Heater
Heater NotesIndirectly heated, coated unipotential cathode
Absolute Maximum Ratings
Plate Voltage165 V
Plate Dissipation1.1 W
Grid 1 Voltage-55 V
Cathode Current22 mA
H-C Voltage200 V
Audio Performance
Key Features
- Medium mu
- Separate cathode connections
- Shock and vibration resistant
- High altitude operation
- Reliability tested to MIL-E-1
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Each Section | 100V | 5000 | - | 20 | 8.5mA |
Application Notes
Particularly useful in oscillator, amplifier and low power servo circuit applications.
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