Tube-number record
7B6-LM
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ClassDuplex-Diode High-Mu Triode
BaseOctal
Filament6.3 V @ 0.3 mA
Construction
Primary TypeTriode
EnvelopeMetal Shell, MT-8
SectionsTriode Unit, Two Diode Units
Filament / Heater
Heater NotesNominal heater voltage is 7 volts; nominal current is 0.32 ampere.
Absolute Maximum Ratings
Plate Voltage250 V
Audio Performance
Key Features
- Single-Ended Metal Type
- Vertical or Horizontal operating position
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier | 250 V | 1100 | 91000 | 100 | 0.9 mA |
Application Notes
The two diode units are placed around a cathode, the sleeve of which is common to the triode unit. Diode biasing of the triode unit of the 7B6-LM is not suitable. Potential difference between heater and cathode should be kept as low as possible.
Datasheets
Datasheet: 7B6-LM.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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