Tube-number record
8236
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BrandTung-Sol
ClassIndustrial Electron Tube
BaseOctal
Filament6.3 V @ 2.5 mA
Construction
Primary TypeBeam tetrode / beam power
EnvelopeJEDEC T-12 (Hard Glass)
Base MaterialLarge wafer octal with sleeve, JETEC No. B8-98
SectionsSingle
Filament / Heater
Heater NotesHeater voltage tolerance +/- 10%
Absolute Maximum Ratings
Plate Voltage1000 V
Plate Dissipation50 W
Grid 2 Voltage200 V
Grid 1 Voltage-150 V
Cathode Current200 mA
H-C Voltage135 V
Audio Performance
Key Features
- Carbon anode
- Hard glass bulb
- Horizontal deflection circuits
- R-F power amplifier
- Direct plug-in replacement for 6DQ5
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class C Telegraphy and F-M Telephony (CCS) | 700 V | 10500 | — | 3.3 | 200 mA |
| Class C Telegraphy and F-M Telephony (ICAS) | 900 V | 10500 | — | 3.3 | 227 mA |
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