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Tube Database (7,341 tube types · 1,270 archive entries)

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Tube-number record

6BQ5

7 archive entries

Equivalent and related tube numbers

Commonly cross-referenced designations for 6BQ5. Compatibility is not guaranteed. Before substituting, verify socket and pinout, heater voltage and current, bias requirements, and maximum ratings against the relevant manufacturers’ datasheets.

  • EL84
BrandGeneral Electric
ClassPentode
BaseNoval (B9A)
Filament6.3 V @ 760 mA

Construction

Primary TypePentode
EnvelopeT-6 1/2
Sections1

Datasheets

Datasheet: 6BQ5.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

Filters

7 tubes found

Manufacturers

RFT1Siemens1

Filament / Heater

Heater NotesCoated Unipotential Cathode

Absolute Maximum Ratings

Plate Voltage300 V
Plate Dissipation12 W
Grid 2 Voltage300 V
Grid 1 Voltage-100 V
Cathode Current65 mA
H-C Voltage100 V

Audio Performance

Key Features
  • Power-amplifier pentode
  • Designed for AF power output stage
  • High-fidelity amplifier usage

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Single Tube Class A Amplifier250 V113004000019.548 mA
Push-Pull Class AB1 (Two Tubes)300 V—8000—72 mA
Sylvania
1

Brands

Baldwin1Fivre1Marconi1Mazda1Mullard1Siemens1Sonotone1

Related tube numbers

EL845RX11RX31
  • Siemens EL84, 6BQ5 tube - RFT — photo 1 of 2
    Siemens EL84, 6BQ5 tube - RFT — photo 2 of 2

    Use the Left and Right Arrow keys to browse photos. Use Home for the first photo and End for the last photo.

    Photo 1 of 2

    EL84, 6BQ5

    Maker
    RFT
    Brand
    Siemens
  • Sonotone EL84, 6BQ5, RX3 tube - Siemens — photo 1 of 2
    Sonotone EL84, 6BQ5, RX3 tube - Siemens — photo 2 of 2

    Use the Left and Right Arrow keys to browse photos. Use Home for the first photo and End for the last photo.

    Photo 1 of 2

    EL84, 6BQ5, RX3

    Maker
  • Baldwin 6BQ5 tube - Sylvania — photo 1 of 4
    Baldwin 6BQ5 tube - Sylvania — photo 2 of 4
    Baldwin 6BQ5 tube - Sylvania — photo 3 of 4
    Baldwin 6BQ5 tube - Sylvania — photo 4 of 4

    Use the Left and Right Arrow keys to browse photos. Use Home for the first photo and End for the last photo.

    Photo 1 of 4

  • Mazda EL84, 6BQ5 tube — photo 1 of 2
    Mazda EL84, 6BQ5 tube — photo 2 of 2

    Use the Left and Right Arrow keys to browse photos. Use Home for the first photo and End for the last photo.

    Photo 1 of 2

    EL84, 6BQ5

    Brand
    Mazda
  • Marconi 6BQ5 tube — photo 1 of 5
    Marconi 6BQ5 tube — photo 2 of 5
    Marconi 6BQ5 tube — photo 3 of 5
    Marconi 6BQ5 tube — photo 4 of 5
    Marconi 6BQ5 tube — photo 5 of 5

    Use the Left and Right Arrow keys to browse photos. Use Home for the first photo and End for the last photo.

    Photo 1 of 5

  • Fivre EL84, 6BQ5 tube — photo 1 of 2
    Fivre EL84, 6BQ5 tube — photo 2 of 2

    Use the Left and Right Arrow keys to browse photos. Use Home for the first photo and End for the last photo.

    Photo 1 of 2

    EL84, 6BQ5

    Brand
    Fivre
  • Mullard EL84, 6BQ5, RX1 tube — photo 1 of 3
    Mullard EL84, 6BQ5, RX1 tube — photo 2 of 3
    Mullard EL84, 6BQ5, RX1 tube — photo 3 of 3

    Use the Left and Right Arrow keys to browse photos. Use Home for the first photo and End for the last photo.

    Photo 1 of 3

Showing 1–7 of 7 results
Siemens
Brand
Sonotone

6BQ5

Maker
Sylvania
Brand
Baldwin

6BQ5

Brand
Marconi

EL84, 6BQ5, RX1

Brand
Mullard