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

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EL34 vacuum tube outline illustration

Tube-number record

EL34

107 archive entries

EL34 is a tube type in the TubeDatabase archive (class: Output Pentode). Recorded specifications: brand Mullard, construction Pentode, base Plastic, socket Octal, maximum plate voltage 800 V, and maximum plate dissipation 25 W. The archive holds 107 photographed examples of this type.

Equivalent and related tube numbers

Commonly cross-referenced designations for EL34. Compatibility is not guaranteed. Before substituting, verify socket and pinout, heater voltage and current, bias requirements, and maximum ratings against the relevant manufacturers’ datasheets.

  • 6CA7
  • KT77
BrandMullard
ClassOutput Pentode
BaseOctal
Filament6.3 V @ 1.5 mA

Construction

Primary TypePentode
EnvelopeGlass
Base Material

Datasheets

Datasheet: EL34.pdf

Download PDF
Loading datasheet...

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

Filters

107 tubes found

Manufacturers

Mullard26RFT24
Plastic
SectionsSingle

Filament / Heater

Heater Notesa.c. mains operated

Absolute Maximum Ratings

Plate Voltage800 V
Plate Dissipation25 W
Grid 2 Voltage500 V
Cathode Current150 mA
H-C Voltage100 V

Audio Performance

Typical THD10%
Power Output11 W
Key Features
  • 25W anode dissipation
  • Distributed load conditions (Ultra-linear)
  • Fixed or Cathode bias capability

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Pentode250 V110001500011100 mA
Triode250 V1150091010.570 mA

Application Notes

Pout and Dtot are measured at fixed bias and represent power available during speech and music reproduction. Reduction of 10% occurs with sustained sine wave due to bias readjustment.
Matsushita
11
Philips6
Hitachi2
Amperex1
Mazda1
Sylvania1
Tesla1

Brands

Philips12Mullard8Miniwatt7Amperex6Siemens6Telefunken5Valvo5RCA4Ge3Tungsram3Ultron3CEI2Dynaco2Ei2International2Matsushita2National2Raytheon2Realistic2RFT2Sylvania2Adzam1AEG1Brimar1Chelmer1Dario1Edicron1Egro1El-Menco1Era1Fivre1G.E.B.1General Electric1Giant Electronics Brand1Gold Aero1Industria1International Servicemaster1Itt Lorenz1Lindal1Pope1Quality Brand1Radiotron1Rogers1RSD1Sonotone1Svetlana1Tekade1Teonex1Tesla1Trigon1Tung-Sol1Westinghouse1Zaerix1

Related tube numbers

6CA744XF218XF410SYO7XF34XF12KEB1KEO1SY11SYN1XF51
  • Mullard EL34 tube - Amperex — photo 1 of 3
    Mullard EL34 tube - Amperex — photo 2 of 3
    Mullard EL34 tube - Amperex — photo 3 of 3

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    Photo 1 of 3

    EL34

    Maker
    Amperex
    Brand
    Mullard
  • Raytheon 6CA7, EL34 tube - Hitachi — photo 1 of 3
    Raytheon 6CA7, EL34 tube - Hitachi — photo 2 of 3
    Raytheon 6CA7, EL34 tube - Hitachi — photo 3 of 3

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    Photo 1 of 3

    6CA7, EL34

    Maker
    Hitachi
    Brand
    Raytheon
  • Ultron EL34 tube - Hitachi — photo 1 of 4
    Ultron EL34 tube - Hitachi — photo 2 of 4
    Ultron EL34 tube - Hitachi — photo 3 of 4
    Ultron EL34 tube - Hitachi — photo 4 of 4

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    Photo 1 of 4

    EL34

    Maker
    Hitachi
  • Teonex EL34 tube - Matsushita — photo 1 of 2
    Teonex EL34 tube - Matsushita — photo 2 of 2

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    Photo 1 of 2

    EL34

    Maker
    Matsushita
    Brand
    Teonex
  • Sylvania EL34 tube - Matsushita

    EL34

    Maker
    Matsushita
    Brand
    Sylvania
  • RCA 6CA7, EL34 tube - Matsushita — photo 1 of 2
    RCA 6CA7, EL34 tube - Matsushita — photo 2 of 2

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    Photo 1 of 2

    6CA7, EL34

    Maker
    Matsushita
    Brand
    RCA
  • International 6CA7, EL34 tube - Matsushita — photo 1 of 5
    International 6CA7, EL34 tube - Matsushita — photo 2 of 5
    International 6CA7, EL34 tube - Matsushita — photo 3 of 5
    International 6CA7, EL34 tube - Matsushita — photo 4 of 5
    International 6CA7, EL34 tube - Matsushita — photo 5 of 5

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    Photo 1 of 5

    6CA7, EL34

    Maker
  • Lindal 6CA7, EL34 tube - Matsushita — photo 1 of 5
    Lindal 6CA7, EL34 tube - Matsushita — photo 2 of 5
    Lindal 6CA7, EL34 tube - Matsushita — photo 3 of 5
    Lindal 6CA7, EL34 tube - Matsushita — photo 4 of 5
    Lindal 6CA7, EL34 tube - Matsushita — photo 5 of 5

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    Photo 1 of 5

    6CA7, EL34

    Maker
  • Gold Aero 6CA7, EL34 tube - Matsushita

    6CA7, EL34

    Maker
    Matsushita
    Brand
    Gold Aero
  • Amperex 6CA7, EL34 tube - Matsushita

    6CA7, EL34

    Maker
    Matsushita
    Brand
    Amperex
  • Ge 6CA7, EL34 tube - Matsushita — photo 1 of 5
    Ge 6CA7, EL34 tube - Matsushita — photo 2 of 5
    Ge 6CA7, EL34 tube - Matsushita — photo 3 of 5
    Ge 6CA7, EL34 tube - Matsushita — photo 4 of 5
    Ge 6CA7, EL34 tube - Matsushita — photo 5 of 5

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    Photo 1 of 5

    6CA7, EL34

  • Realistic 6CA7, EL34 tube - Matsushita — photo 1 of 2
    Realistic 6CA7, EL34 tube - Matsushita — photo 2 of 2

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    Photo 1 of 2

    6CA7, EL34

    Maker
    Matsushita
    Brand
    Realistic
  • CEI 6CA7, EL34 tube - Matsushita

    6CA7, EL34

    Maker
    Matsushita
    Brand
    CEI
  • Raytheon 6CA7, EL34 tube - Matsushita — photo 1 of 6
    Raytheon 6CA7, EL34 tube - Matsushita — photo 2 of 6
    Raytheon 6CA7, EL34 tube - Matsushita — photo 3 of 6
    Raytheon 6CA7, EL34 tube - Matsushita — photo 4 of 6
    Raytheon 6CA7, EL34 tube - Matsushita — photo 5 of 6
    Raytheon 6CA7, EL34 tube - Matsushita — photo 6 of 6

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    Photo 1 of 6

    6CA7, EL34

  • Rogers 6CA7, EL34, XF5 tube - Mazda — photo 1 of 4
    Rogers 6CA7, EL34, XF5 tube - Mazda — photo 2 of 4
    Rogers 6CA7, EL34, XF5 tube - Mazda — photo 3 of 4
    Rogers 6CA7, EL34, XF5 tube - Mazda — photo 4 of 4

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    Photo 1 of 4

    6CA7, EL34, XF5

    Maker
    Mazda
  • Sonotone EL34, 6CA7, XF2 tube - Mullard — photo 1 of 5
    Sonotone EL34, 6CA7, XF2 tube - Mullard — photo 2 of 5
    Sonotone EL34, 6CA7, XF2 tube - Mullard — photo 3 of 5
    Sonotone EL34, 6CA7, XF2 tube - Mullard — photo 4 of 5
    Sonotone EL34, 6CA7, XF2 tube - Mullard — photo 5 of 5

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    Photo 1 of 5

    EL34, 6CA7, XF2

    Maker
  • Valvo EL34, XF2 tube - Mullard — photo 1 of 6
    Valvo EL34, XF2 tube - Mullard — photo 2 of 6
    Valvo EL34, XF2 tube - Mullard — photo 3 of 6
    Valvo EL34, XF2 tube - Mullard — photo 4 of 6
    Valvo EL34, XF2 tube - Mullard — photo 5 of 6
    Valvo EL34, XF2 tube - Mullard — photo 6 of 6

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    Photo 1 of 6

    EL34, XF2

  • Ge 6CA7, EL34, XF4 tube - Mullard — photo 1 of 5
    Ge 6CA7, EL34, XF4 tube - Mullard — photo 2 of 5
    Ge 6CA7, EL34, XF4 tube - Mullard — photo 3 of 5
    Ge 6CA7, EL34, XF4 tube - Mullard — photo 4 of 5
    Ge 6CA7, EL34, XF4 tube - Mullard — photo 5 of 5

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    Photo 1 of 5

    6CA7, EL34, XF4

    Maker
  • Tung-Sol 6CA7, EL34 tube - Mullard — photo 1 of 4
    Tung-Sol 6CA7, EL34 tube - Mullard — photo 2 of 4
    Tung-Sol 6CA7, EL34 tube - Mullard — photo 3 of 4
    Tung-Sol 6CA7, EL34 tube - Mullard — photo 4 of 4

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    Photo 1 of 4

    6CA7, EL34

    Maker
    Mullard
  • Philips, Miniwatt EL34, XF2 tube - Mullard — photo 1 of 9
    Philips, Miniwatt EL34, XF2 tube - Mullard — photo 2 of 9
    Philips, Miniwatt EL34, XF2 tube - Mullard — photo 3 of 9
    Philips, Miniwatt EL34, XF2 tube - Mullard — photo 4 of 9
    Philips, Miniwatt EL34, XF2 tube - Mullard — photo 5 of 9
    Philips, Miniwatt EL34, XF2 tube - Mullard — photo 6 of 9
    Philips, Miniwatt EL34, XF2 tube - Mullard — photo 7 of 9
    Philips, Miniwatt EL34, XF2 tube - Mullard — photo 8 of 9
    Philips, Miniwatt EL34, XF2 tube - Mullard — photo 9 of 9

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    Photo 1 of 9

  • RCA 6CA7, EL34, XF3 tube - Mullard — photo 1 of 2
    RCA 6CA7, EL34, XF3 tube - Mullard — photo 2 of 2

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    Photo 1 of 2

    6CA7, EL34, XF3

    Maker
    Mullard
    Brand
    RCA
  • Amperex 6CA7, EL34, XF2 tube - Mullard — photo 1 of 6
    Amperex 6CA7, EL34, XF2 tube - Mullard — photo 2 of 6
    Amperex 6CA7, EL34, XF2 tube - Mullard — photo 3 of 6
    Amperex 6CA7, EL34, XF2 tube - Mullard — photo 4 of 6
    Amperex 6CA7, EL34, XF2 tube - Mullard — photo 5 of 6
    Amperex 6CA7, EL34, XF2 tube - Mullard — photo 6 of 6

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    Photo 1 of 6

    6CA7, EL34, XF2

  • Philips EL34, XF4 tube - Mullard — photo 1 of 4
    Philips EL34, XF4 tube - Mullard — photo 2 of 4
    Philips EL34, XF4 tube - Mullard — photo 3 of 4
    Philips EL34, XF4 tube - Mullard — photo 4 of 4

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    Photo 1 of 4

    EL34, XF4

    Maker
    Mullard
  • Dynaco EL34, 6CA7, XF2 tube - Mullard — photo 1 of 7
    Dynaco EL34, 6CA7, XF2 tube - Mullard — photo 2 of 7
    Dynaco EL34, 6CA7, XF2 tube - Mullard — photo 3 of 7
    Dynaco EL34, 6CA7, XF2 tube - Mullard — photo 4 of 7
    Dynaco EL34, 6CA7, XF2 tube - Mullard — photo 5 of 7
    Dynaco EL34, 6CA7, XF2 tube - Mullard — photo 6 of 7
    Dynaco EL34, 6CA7, XF2 tube - Mullard — photo 7 of 7

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    Photo 1 of 7

Showing 1–24 of 107 results
12…5Next
Brand
Ultron
Matsushita
Brand
International
Matsushita
Brand
Lindal
Maker
Matsushita
Brand
Ge
Maker
Matsushita
Brand
Raytheon
Brand
Rogers
Mullard
Brand
Sonotone
Maker
Mullard
Brand
Valvo
Mullard
Brand
Ge
Brand
Tung-Sol

EL34, XF2

Maker
Mullard
Brand
Philips, Miniwatt
Maker
Mullard
Brand
Amperex
Brand
Philips

EL34, 6CA7, XF2

Maker
Mullard
Brand
Dynaco