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

Pre (2,630 tube types), Other (2,603 tube types), Power (1,292 tube types), Rectifier (816 tube types)

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Tube-number record

7025

26 archive entries

7025 is a tube type in the TubeDatabase archive (class: Miniature high-mu twin triode). Recorded specifications: brand SYLVANIA, construction Dual triode, socket Noval (B9A), maximum plate voltage 300 V, and maximum plate dissipation 1 W. The archive holds 26 photographed examples of this type.

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

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

Mode	Plate V	Gm (µmhos)	Rp (Ω)	µ	Plate mA
Class A1 Amplifier	100 V	1250	80000	100	0.5 mA
Class A1 Amplifier	250 V	1600	62500	100	1.2 mA

Philips

2

Brands

Magnavox4 Sovtek2 Amperex1 Bell & Howell1 Cbs1 Cge1 Daltron1 Emerson1 Gt1 Ken-Rad1 Mullard1 Philips Ecg1 Raytheon Uniline1 RCA1 Rogers1 Sears1 Sonotone1 Stromberg Carlson1 Sylvania1 Tung-Sol1 Westinghouse1 Wurlitzer1

Related tube numbers

12AX7A8 ECC836 12AX74 12AX7WA1 322MBI1 GT70251 I611

Sort by

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Photo 1 of 3
GT7025, 7025, 12AX7, ECC83
Maker
Ei
Brand
Gt
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Photo 1 of 5
12AX7A, ECC83, 7025
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Photo 1 of 3
7025, 12AX7A, ECC83
Maker
Matsushita
Brand
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Photo 1 of 2
7025, I61
Maker
Mullard
Brand
Emerson
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Photo 1 of 2
7025, 12AX7A
Maker
Philips
Brand
RCA
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Photo 1 of 2
7025
Maker
Philips
Brand
Rogers
7025, 12AX7
Maker
RCA
Brand
Sonotone
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Photo 1 of 6
7025, 12AX7
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Photo 1 of 2
7025, 12AX7A
Maker
RCA
Brand
Magnavox
7025
Maker
RCA
Brand
Wurlitzer
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Photo 1 of 3
7025
Maker
Tung-Sol
Brand
Stromberg Carlson
7025
Brand
Ken-Rad
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Photo 1 of 4
12AX7A, 7025, ECC83
Brand
Sears
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Photo 1 of 2
7025
Brand
Cbs
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Photo 1 of 3
7025
Brand
Sovtek
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Photo 1 of 4
7025, 322MBI
Brand
Tung-Sol
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Photo 1 of 4
12AX7A, ECC83, 7025
Brand
Sylvania
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Photo 1 of 2
7025, ECC83
Brand
Westinghouse
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Photo 1 of 3
7025
Brand
Raytheon Uniline
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Photo 1 of 3
12AX7A, 7025
Brand
Magnavox
7025
Brand
Amperex
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Photo 1 of 4
7025
Brand
Daltron
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Photo 1 of 7
12AX7WA, 7025
Brand
Sovtek

Showing 1–24 of 26 results

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Maker

Brand

Maker: RCA
Brand: Magnavox

12AX7, 7025

Brand: Mullard