Tube-number record
3BU8A
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3BU8A is a tube type in the TubeDatabase archive (class: Receiving Tube). Recorded specifications: brand JEDEC, construction Pentode, socket Noval (B9A), maximum plate voltage 300 V, and maximum plate dissipation 1.1 W. The archive does not yet hold a photographed example of this type.
BrandJEDEC
ClassReceiving Tube
BaseNoval (B9A)
Filament3.15 V @ 600 mA
Construction
Primary TypePentode
EnvelopeT-6 1/2 Glass
Sections2
Filament / Heater
Heater NotesControlled heater warm-up time for series string operation
Absolute Maximum Ratings
Plate Voltage300 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Each Section Separately | 100 V | 1500 | — | — | — |
| Grid 3 Characteristics | 100 V | 180 | — | — | — |
Application Notes
Intended for use as a combined sync separator-clipper and AGC tube in television receivers.
Datasheets
Datasheet: 3BU8A.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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