6D4
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BrandSYLVANIA
ClassTriode Thyratron
BaseMiniature Button 7-Pin
Filament6.3V @ 250mA
Construction
Primary Typetriode
EnvelopeT-5 1/2
Sectionssingle
Filament / Heater
MaterialCoated Unipotential
Warm-up Time30s
Heater NotesHeater voltage must be applied before anode voltage.
Absolute Maximum Ratings
Plate Voltage250 V
Grid 1 Voltage110 V
Cathode Current25 mA
H-C Voltage110 V
Audio Performance
Key Features
- Miniature triode thyratron
- Relay tube
- Wide band noise generator
- Any mounting position
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Thyratron Operation (Example 1) | 50V | - | 650 | - | - |
| Thyratron Operation (Example 2) | 125V | - | 650 | - | - |
| Thyratron Operation (Example 3) | 300V | - | 650 | - | - |
| Noise Generator Operation | 250V | - | 33000 | - | 7mA |
Application Notes
The tube must be placed in a constant magnetic field of 375 gausses perpendicular to the electron path for noise generator use. A buffer amplifier is recommended to prevent reactive loading.
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