ECC832

Dissimilar audio twin triode combining one high-mu ECC83-type section with one medium-mu ECC82-type section for circuits requiring different gain characteristics in one envelope.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: -
Socket code: B9A
Base pins: 9
Nominal heater: 12.6 V / 150 mA

Description

Combined dissimilar double triode for special purposes, with one high-mu and one medium-mu section; also designated ECC832. Printed co-designation record duplicated from 12DW7.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B9A
Base pins: 9
Nominal heater voltage: 12.6 V
Nominal heater current: 150 mA
Parallel heater voltage: 6.3 V
Parallel heater current: 300 mA
Series capable: Yes

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 62500 Ω
Transconductance: 0.0016 S
Amplification factor: 100
Max plate voltage: 300 V
Max plate dissipation: 1 W
Max cathode current: 8 mA

Reference/equivalence-sheet sparse exception: this sheet prints typical characteristics for each dissimilar system but explicitly refers limiting values and capacitances to ECC83/ECC82 specs; external values were not imported.

Section 2

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 7700 Ω
Transconductance: 0.0022 S
Amplification factor: 17
Max plate voltage: 300 V
Max plate dissipation: 2.75 W
Max cathode current: 20 mA

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

199X JJ

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Typical Plate Voltage
250 V
TypicalGridVoltage
-2 V
Typical Plate Current
1.2 mA

SECTION 2

Triode

Other

Typical Plate Voltage
250 V
TypicalGridVoltage
-8.5 V
Typical Plate Current
10.5 mA

Data set 02

2026 JJ Electronic

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Ua
250
Published value
Ug
-2
Published value
Ia
1.2
Published value
S
1.6
Published value
µ
100
Published value

SECTION 2

Triode

Characteristics

Ua
250
Published value
Ug
-2
Published value
Ia
1.2
Published value
S
1.6
Published value
µ
100
Published value