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

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Tube-number record

7025

26 archive entries

Equivalent and related tube numbers

Commonly cross-referenced designations for 7025. Compatibility is not guaranteed. Before substituting, verify socket and pinout, heater voltage and current, bias requirements, and maximum ratings against the relevant manufacturers’ datasheets.

  • 12AX7
  • ECC83
BrandSYLVANIA
ClassMiniature high-mu twin triode
BaseNoval (B9A)
Filament12.6 V @ 150 mA

Construction

Primary TypeDual triode
EnvelopeT-6 1/2
Sections

Datasheets

Datasheet: 7025.pdf

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

Filters

26 tubes found

Manufacturers

RCA4Ei2
2

Filament / Heater

Heater NotesCenter tapped heater permits operation on 12.6 or 6.3 volts.

Absolute Maximum Ratings

Plate Voltage300 V
Plate Dissipation1 W
Grid 1 Voltage-50 V
H-C Voltage200 V

Audio Performance

Key Features
  • Separate cathodes
  • Improved noise and hum characteristics
  • Center tapped heater
  • Coated Unipotential cathode

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A1 Amplifier100 V1250800001000.5 mA
Class A1 Amplifier250 V1600625001001.2 mA
Philips
2
Matsushita1
Mullard1
Tung-Sol1

Brands

Magnavox4Sovtek2Amperex1Bell & Howell1Cbs1Cge1Daltron1Emerson1Gt1Ken-Rad1Mullard1Philips Ecg1Raytheon Uniline1RCA1Rogers1Sears1Sonotone1Stromberg Carlson1Sylvania1Tung-Sol1Westinghouse1Wurlitzer1

Related tube numbers

12AX7A8ECC83612AX7412AX7WA1322MBI1GT70251I611
  • Gt GT7025, 7025, 12AX7, ECC83 tube - Ei — photo 1 of 3
    Gt GT7025, 7025, 12AX7, ECC83 tube - Ei — photo 2 of 3
    Gt GT7025, 7025, 12AX7, ECC83 tube - Ei — photo 3 of 3

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    Photo 1 of 3

    GT7025, 7025, 12AX7, ECC83

    Maker
    Ei
    Brand
    Gt
  • Philips Ecg 12AX7A, ECC83, 7025 tube - Ei — photo 1 of 5
    Philips Ecg 12AX7A, ECC83, 7025 tube - Ei — photo 2 of 5
    Philips Ecg 12AX7A, ECC83, 7025 tube - Ei — photo 3 of 5
    Philips Ecg 12AX7A, ECC83, 7025 tube - Ei — photo 4 of 5
    Philips Ecg 12AX7A, ECC83, 7025 tube - Ei — photo 5 of 5

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    Photo 1 of 5

    12AX7A, ECC83, 7025

  • Cge 7025, 12AX7A, ECC83 tube - Matsushita — photo 1 of 3
    Cge 7025, 12AX7A, ECC83 tube - Matsushita — photo 2 of 3
    Cge 7025, 12AX7A, ECC83 tube - Matsushita — photo 3 of 3

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    Photo 1 of 3

    7025, 12AX7A, ECC83

    Maker
    Matsushita
    Brand
  • Emerson 7025, I61 tube - Mullard — photo 1 of 2
    Emerson 7025, I61 tube - Mullard — photo 2 of 2

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    Photo 1 of 2

    7025, I61

    Maker
    Mullard
    Brand
    Emerson
  • RCA 7025, 12AX7A tube - Philips — photo 1 of 2
    RCA 7025, 12AX7A tube - Philips — photo 2 of 2

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    Photo 1 of 2

    7025, 12AX7A

    Maker
    Philips
    Brand
    RCA
  • Rogers 7025 tube - Philips — photo 1 of 2
    Rogers 7025 tube - Philips — photo 2 of 2

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    Photo 1 of 2

    7025

    Maker
    Philips
    Brand
    Rogers
  • Sonotone 7025, 12AX7 tube - RCA

    7025, 12AX7

    Maker
    RCA
    Brand
    Sonotone
  • Magnavox 7025, 12AX7 tube - RCA — photo 1 of 6
    Magnavox 7025, 12AX7 tube - RCA — photo 2 of 6
    Magnavox 7025, 12AX7 tube - RCA — photo 3 of 6
    Magnavox 7025, 12AX7 tube - RCA — photo 4 of 6
    Magnavox 7025, 12AX7 tube - RCA — photo 5 of 6
    Magnavox 7025, 12AX7 tube - RCA — photo 6 of 6

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    Photo 1 of 6

    7025, 12AX7

  • Magnavox 7025, 12AX7A tube - RCA — photo 1 of 2
    Magnavox 7025, 12AX7A tube - RCA — photo 2 of 2

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    Photo 1 of 2

    7025, 12AX7A

    Maker
    RCA
    Brand
    Magnavox
  • Wurlitzer 7025 tube - RCA

    7025

    Maker
    RCA
    Brand
    Wurlitzer
  • Stromberg Carlson 7025 tube - Tung-Sol — photo 1 of 3
    Stromberg Carlson 7025 tube - Tung-Sol — photo 2 of 3
    Stromberg Carlson 7025 tube - Tung-Sol — photo 3 of 3

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    Photo 1 of 3

    7025

    Maker
    Tung-Sol
    Brand
    Stromberg Carlson
  • Ken-Rad 7025 tube

    7025

    Brand
    Ken-Rad
  • Sears 12AX7A, 7025, ECC83 tube — photo 1 of 4
    Sears 12AX7A, 7025, ECC83 tube — photo 2 of 4
    Sears 12AX7A, 7025, ECC83 tube — photo 3 of 4
    Sears 12AX7A, 7025, ECC83 tube — photo 4 of 4

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    Photo 1 of 4

    12AX7A, 7025, ECC83

    Brand
    Sears
  • Cbs 7025 tube — photo 1 of 2
    Cbs 7025 tube — photo 2 of 2

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    Photo 1 of 2

    7025

    Brand
    Cbs
  • Sovtek 7025 tube — photo 1 of 3
    Sovtek 7025 tube — photo 2 of 3
    Sovtek 7025 tube — photo 3 of 3

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    Photo 1 of 3

    7025

    Brand
    Sovtek
  • Tung-Sol 7025, 322MBI tube — photo 1 of 4
    Tung-Sol 7025, 322MBI tube — photo 2 of 4
    Tung-Sol 7025, 322MBI tube — photo 3 of 4
    Tung-Sol 7025, 322MBI tube — photo 4 of 4

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    Photo 1 of 4

    7025, 322MBI

    Brand
    Tung-Sol
  • Sylvania 12AX7A, ECC83, 7025 tube — photo 1 of 4
    Sylvania 12AX7A, ECC83, 7025 tube — photo 2 of 4
    Sylvania 12AX7A, ECC83, 7025 tube — photo 3 of 4
    Sylvania 12AX7A, ECC83, 7025 tube — photo 4 of 4

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    Photo 1 of 4

    12AX7A, ECC83, 7025

    Brand
    Sylvania
  • Westinghouse 7025, ECC83 tube — photo 1 of 2
    Westinghouse 7025, ECC83 tube — photo 2 of 2

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    Photo 1 of 2

    7025, ECC83

    Brand
    Westinghouse
  • Raytheon Uniline 7025 tube — photo 1 of 3
    Raytheon Uniline 7025 tube — photo 2 of 3
    Raytheon Uniline 7025 tube — photo 3 of 3

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    Photo 1 of 3

    7025

    Brand
    Raytheon Uniline
  • Magnavox 12AX7A, 7025 tube — photo 1 of 3
    Magnavox 12AX7A, 7025 tube — photo 2 of 3
    Magnavox 12AX7A, 7025 tube — photo 3 of 3

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    Photo 1 of 3

    12AX7A, 7025

    Brand
    Magnavox
  • Amperex 7025 tube

    7025

    Brand
    Amperex
  • Daltron 7025 tube — photo 1 of 4
    Daltron 7025 tube — photo 2 of 4
    Daltron 7025 tube — photo 3 of 4
    Daltron 7025 tube — photo 4 of 4

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    Photo 1 of 4

    7025

    Brand
    Daltron
  • Mullard 12AX7, 7025 tube — photo 1 of 7
    Mullard 12AX7, 7025 tube — photo 2 of 7
    Mullard 12AX7, 7025 tube — photo 3 of 7
    Mullard 12AX7, 7025 tube — photo 4 of 7
    Mullard 12AX7, 7025 tube — photo 5 of 7
    Mullard 12AX7, 7025 tube — photo 6 of 7
    Mullard 12AX7, 7025 tube — photo 7 of 7

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    Photo 1 of 7

  • Sovtek 12AX7WA, 7025 tube

    12AX7WA, 7025

    Brand
    Sovtek
Showing 1–24 of 26 results
12Next
Maker
Ei
Brand
Philips Ecg
Cge
Maker
RCA
Brand
Magnavox

12AX7, 7025

Brand
Mullard