Tube-number record
6B8
0 archive entries
BrandRCA
ClassDuplex-Diode Pentode
BaseOctal
Filament6.3 V @ 300 mA
Construction
Primary TypeOther / special
EnvelopeMetal
SectionsTwo diodes and a pentode
Filament / Heater
Absolute Maximum Ratings
Plate Voltage250 V
Grid 2 Voltage125 V
Audio Performance
Key Features
- All-Metal tube construction
- Two diodes and a pentode in a single envelope
- Simultaneous detection, amplification, and automatic volume control
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier | 250 V | 1325 | 600000 | 800 | 10 mA |
Application Notes
Recommended for combined detector, amplifier (RF, IF, or AF), and AVC service in radio receivers. The pentode unit features an extended cut-off to permit moderate gain control by grid-bias variation without introducing cross-modulation. Diodes may be used in full-wave or half-wave circuits.
Datasheets
Datasheet: 6B8.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
0 results