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

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12AU7 vacuum tube outline illustration

Tube-number record

12AU7

59 archive entries

12AU7 is a tube type in the TubeDatabase archive (class: Miniature Twin Triode). Recorded specifications: brand Brimar, construction Dual triode, base Glass, socket Noval (B9A), maximum plate voltage 300 V, and maximum plate dissipation 2.75 W. The archive holds 59 photographed examples of this type.

Equivalent and related tube numbers

Commonly cross-referenced designations for 12AU7. Compatibility is not guaranteed. Before substituting, verify socket and pinout, heater voltage and current, bias requirements, and maximum ratings against the relevant manufacturers’ datasheets.

  • 5963
  • 6189
  • CV491
  • ECC82
BrandBrimar
ClassMiniature Twin Triode
BaseNoval (B9A)
Filament12.6 V @ 150 mA

Construction

Primary TypeDual triode
EnvelopeT6
Base Material

Datasheets

Datasheet: 12AU7.pdf

Download PDF
Loading datasheet...

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

Filters

59 tubes found

Manufacturers

Siemens6Mullard3
Glass
Sections2

Filament / Heater

Heater NotesCenter tap for series or parallel operation

Absolute Maximum Ratings

Plate Voltage300 V
Plate Dissipation2.75 W
Grid 1 Voltage-150 V
Cathode Current20 mA
H-C Voltage250 V

Audio Performance

Power Output1.2 W
Key Features
  • Miniature indirectly heated twin triode
  • Separate structures
  • Heater centre tap for AC or AC/DC
  • High voltage gain
  • Low distortion

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A1 Amplifier100 V3100625019.511.8 mA
Class A1 Amplifier250 V220077001710.5 mA

Application Notes

Suitable for normal amplifier, resistance capacity coupled amplifier, paraphase amplifier, oscillator, and frequency multiplier. Units are mounted side by side with separate heaters but common heater pin connections.
Hitachi
2
Matsushita2
Amperex1
Fivre1
NEC1
Philips1
RFT1

Brands

Mazda3Telefunken3Tungsram3Brimar2Fivre2Marconi Italiana2Mullard2Philips2R/T La Radiotechnique2Sonotone2Artisan1ATES1Awv1B&K1Cge1Channel Master1Cifte1Ge1Geloso1Harman Kardon1Heath1Hewlett Packard1Hit-Ray1Hitachi1IEC1Ken-Rad1Lansdale1Marconi1Marconi Espanola1MWT1National1NEC1Oron1Pinnacle1Pope1Rad Tel1RCA1Siemens1Sperry Gyroscope1Standard Brand1Teerad1Tektronix1Trigon1Tronal1Tung-Sol1Zaerix1

Related tube numbers

ECC8225K61512AU7WA1618918236231B3291CV40031GF11GF21JKR1JRC-61891JTL-12AU71K661
  • Hewlett Packard 12AU7, ECC82 tube - Amperex — photo 1 of 4
    Hewlett Packard 12AU7, ECC82 tube - Amperex — photo 2 of 4
    Hewlett Packard 12AU7, ECC82 tube - Amperex — photo 3 of 4
    Hewlett Packard 12AU7, ECC82 tube - Amperex — photo 4 of 4

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    Photo 1 of 4

    12AU7, ECC82

    Maker
    Amperex
    Brand
    Hewlett Packard
  • Geloso ECC82, 12AU7 tube - Fivre — photo 1 of 3
    Geloso ECC82, 12AU7 tube - Fivre — photo 2 of 3
    Geloso ECC82, 12AU7 tube - Fivre — photo 3 of 3

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    Photo 1 of 3

    ECC82, 12AU7

    Maker
    Fivre
    Brand
    Geloso
  • B&K 12AU7 tube - Hitachi — photo 1 of 5
    B&K 12AU7 tube - Hitachi — photo 2 of 5
    B&K 12AU7 tube - Hitachi — photo 3 of 5
    B&K 12AU7 tube - Hitachi — photo 4 of 5
    B&K 12AU7 tube - Hitachi — photo 5 of 5

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    Photo 1 of 5

    12AU7

    Maker
  • Hit-Ray 12AU7 tube - Hitachi — photo 1 of 2
    Hit-Ray 12AU7 tube - Hitachi — photo 2 of 2

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    12AU7

    Maker
    Hitachi
    Brand
    Hit-Ray
  • National 12AU7, ECC82 tube - Matsushita

    12AU7, ECC82

    Maker
    Matsushita
    Brand
    National
  • Teerad 12AU7, ECC82 tube - Matsushita — photo 1 of 6
    Teerad 12AU7, ECC82 tube - Matsushita — photo 2 of 6
    Teerad 12AU7, ECC82 tube - Matsushita — photo 3 of 6
    Teerad 12AU7, ECC82 tube - Matsushita — photo 4 of 6
    Teerad 12AU7, ECC82 tube - Matsushita — photo 5 of 6
    Teerad 12AU7, ECC82 tube - Matsushita — photo 6 of 6

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    Photo 1 of 6

    12AU7, ECC82

  • Heath ECC82, 12AU7, K61 tube - Mullard — photo 1 of 2
    Heath ECC82, 12AU7, K61 tube - Mullard — photo 2 of 2

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    ECC82, 12AU7, K61

    Maker
    Mullard
    Brand
    Heath
  • 12AU7, CV4003 tube - Mullard

    12AU7, CV4003

    Maker
    Mullard
  • Tungsram 12AU7, K61 tube - Mullard — photo 1 of 3
    Tungsram 12AU7, K61 tube - Mullard — photo 2 of 3
    Tungsram 12AU7, K61 tube - Mullard — photo 3 of 3

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    12AU7, K61

    Maker
    Mullard
    Brand
    Tungsram
  • Channel Master 12AU7 tube - NEC — photo 1 of 4
    Channel Master 12AU7 tube - NEC — photo 2 of 4
    Channel Master 12AU7 tube - NEC — photo 3 of 4
    Channel Master 12AU7 tube - NEC — photo 4 of 4

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    12AU7

    Maker
    NEC
  • Pope 12AU7, ECC82 tube - Philips — photo 1 of 7
    Pope 12AU7, ECC82 tube - Philips — photo 2 of 7
    Pope 12AU7, ECC82 tube - Philips — photo 3 of 7
    Pope 12AU7, ECC82 tube - Philips — photo 4 of 7
    Pope 12AU7, ECC82 tube - Philips — photo 5 of 7
    Pope 12AU7, ECC82 tube - Philips — photo 6 of 7
    Pope 12AU7, ECC82 tube - Philips — photo 7 of 7

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  • Trigon 12AU7 tube - RFT

    12AU7

    Maker
    RFT
    Brand
    Trigon
  • Sonotone ECC82, 12AU7 tube - Siemens — photo 1 of 9
    Sonotone ECC82, 12AU7 tube - Siemens — photo 2 of 9
    Sonotone ECC82, 12AU7 tube - Siemens — photo 3 of 9
    Sonotone ECC82, 12AU7 tube - Siemens — photo 4 of 9
    Sonotone ECC82, 12AU7 tube - Siemens — photo 5 of 9
    Sonotone ECC82, 12AU7 tube - Siemens — photo 6 of 9
    Sonotone ECC82, 12AU7 tube - Siemens — photo 7 of 9
    Sonotone ECC82, 12AU7 tube - Siemens — photo 8 of 9
    Sonotone ECC82, 12AU7 tube - Siemens — photo 9 of 9

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  • Harman Kardon ECC82, 12AU7 tube - Siemens — photo 1 of 8
    Harman Kardon ECC82, 12AU7 tube - Siemens — photo 2 of 8
    Harman Kardon ECC82, 12AU7 tube - Siemens — photo 3 of 8
    Harman Kardon ECC82, 12AU7 tube - Siemens — photo 4 of 8
    Harman Kardon ECC82, 12AU7 tube - Siemens — photo 5 of 8
    Harman Kardon ECC82, 12AU7 tube - Siemens — photo 6 of 8
    Harman Kardon ECC82, 12AU7 tube - Siemens — photo 7 of 8
    Harman Kardon ECC82, 12AU7 tube - Siemens — photo 8 of 8

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  • Sonotone ECC82, 12AU7 tube - Siemens — photo 1 of 6
    Sonotone ECC82, 12AU7 tube - Siemens — photo 2 of 6
    Sonotone ECC82, 12AU7 tube - Siemens — photo 3 of 6
    Sonotone ECC82, 12AU7 tube - Siemens — photo 4 of 6
    Sonotone ECC82, 12AU7 tube - Siemens — photo 5 of 6
    Sonotone ECC82, 12AU7 tube - Siemens — photo 6 of 6

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    Photo 1 of 6

    ECC82, 12AU7

  • Artisan 12AU7, GF1 tube - Siemens — photo 1 of 7
    Artisan 12AU7, GF1 tube - Siemens — photo 2 of 7
    Artisan 12AU7, GF1 tube - Siemens — photo 3 of 7
    Artisan 12AU7, GF1 tube - Siemens — photo 4 of 7
    Artisan 12AU7, GF1 tube - Siemens — photo 5 of 7
    Artisan 12AU7, GF1 tube - Siemens — photo 6 of 7
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  • Telefunken 12AU7, K61 tube - Siemens — photo 1 of 9
    Telefunken 12AU7, K61 tube - Siemens — photo 2 of 9
    Telefunken 12AU7, K61 tube - Siemens — photo 3 of 9
    Telefunken 12AU7, K61 tube - Siemens — photo 4 of 9
    Telefunken 12AU7, K61 tube - Siemens — photo 5 of 9
    Telefunken 12AU7, K61 tube - Siemens — photo 6 of 9
    Telefunken 12AU7, K61 tube - Siemens — photo 7 of 9
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    Telefunken 12AU7, K61 tube - Siemens — photo 9 of 9

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  • ATES 12AU7, ECC82 tube - Siemens — photo 1 of 8
    ATES 12AU7, ECC82 tube - Siemens — photo 2 of 8
    ATES 12AU7, ECC82 tube - Siemens — photo 3 of 8
    ATES 12AU7, ECC82 tube - Siemens — photo 4 of 8
    ATES 12AU7, ECC82 tube - Siemens — photo 5 of 8
    ATES 12AU7, ECC82 tube - Siemens — photo 6 of 8
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    ATES 12AU7, ECC82 tube - Siemens — photo 8 of 8

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  • Philips 12AU7, K66 tube — photo 1 of 6
    Philips 12AU7, K66 tube — photo 2 of 6
    Philips 12AU7, K66 tube — photo 3 of 6
    Philips 12AU7, K66 tube — photo 4 of 6
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    12AU7, K66

  • Mazda 12AU7 tube — photo 1 of 4
    Mazda 12AU7 tube — photo 2 of 4
    Mazda 12AU7 tube — photo 3 of 4
    Mazda 12AU7 tube — photo 4 of 4

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    12AU7

    Brand
    Mazda
  • Telefunken ECC82, 12AU7 tube — photo 1 of 6
    Telefunken ECC82, 12AU7 tube — photo 2 of 6
    Telefunken ECC82, 12AU7 tube — photo 3 of 6
    Telefunken ECC82, 12AU7 tube — photo 4 of 6
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    ECC82, 12AU7

  • RCA JRC-6189, 6189, 12AU7 tube — photo 1 of 6
    RCA JRC-6189, 6189, 12AU7 tube — photo 2 of 6
    RCA JRC-6189, 6189, 12AU7 tube — photo 3 of 6
    RCA JRC-6189, 6189, 12AU7 tube — photo 4 of 6
    RCA JRC-6189, 6189, 12AU7 tube — photo 5 of 6
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    JRC-6189, 6189, 12AU7

  • Cge, Ge 12AU7, ECC82 tube

    12AU7, ECC82

    Brand
    Cge, Ge
  • Tungsram 12AU7 tube — photo 1 of 3
    Tungsram 12AU7 tube — photo 2 of 3
    Tungsram 12AU7 tube — photo 3 of 3

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    12AU7

    Brand
    Tungsram
Showing 1–24 of 59 results
123Next
Hitachi
Brand
B&K
Maker
Matsushita
Brand
Teerad
Brand
Channel Master
12AU7, ECC82
Maker
Philips
Brand
Pope

ECC82, 12AU7

Maker
Siemens
Brand
Sonotone

ECC82, 12AU7

Maker
Siemens
Brand
Harman Kardon
Maker
Siemens
Brand
Sonotone

12AU7, GF1

Maker
Siemens
Brand
Artisan

12AU7, K61

Maker
Siemens
Brand
Telefunken

12AU7, ECC82

Maker
Siemens
Brand
ATES
Brand
Philips
Brand
Telefunken
Brand
RCA