6977
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BrandSYLVANIA
ClassIndicator Triode
BaseSubminiature Button Flexible Leads
Construction
Primary TypeTriode
EnvelopeSubminiature
Sections1
Filament / Heater
MaterialCoated Filament
Absolute Maximum Ratings
Plate Voltage65 V
Cathode Current0.75 mA
Audio Performance
Key Features
- Filamentary
- High vacuum
- Subminiature
- Fluorescent anode
- Gold plated leads
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Maximum Light Output | 50V | - | 100000 | - | 0.585mA |
| Zero Light Output | 50V | - | - | - | 0.005mA |
Application Notes
The 6977 is well suited for use in transistorized circuits where its high input impedance and small signal requirements do not load the transistor circuit. Designed for applications in electronic computers and business machines where it can replace neon lamps.
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