Tube-number record
2B7
0 archive entries
2B7 is a tube type in the TubeDatabase archive (class: Duplex-Diode Pentode). Recorded specifications: brand RCA, construction Pentode, and socket 7-pin (non-miniature). The archive does not yet hold a photographed example of this type.
BrandRCA
ClassDuplex-Diode Pentode
Base7-pin (non-miniature)
Filament2.5 V @ 800 mA
Construction
Primary TypePentode
EnvelopeST-12
SectionsTwo diodes and a pentode
Filament / Heater
Heater NotesA.C. or D.C.
Absolute Maximum Ratings
Audio Performance
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Unit | — | — | — | — | — |
Application Notes
The 2B7 is intended especially for use in AC receivers having 2.5-volt heater supply. Recommended for service as a combined detector, amplifier (radio-frequency, intermediate-frequency or audio-frequency), and automatic-volume-control tube. Complete shielding of detector circuits is generally necessary to prevent r-f or i-f coupling.
Datasheets
Datasheet: 2B7.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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