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Voltage Triode Pentode ·Pentode-Triode

6AG9

Combined triode-pentode for television video, IF, AGC, sync, burst, band-pass, or related signal-processing stages.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: E12
Socket code: B12C
Base pins: 12
Nominal heater: 6.3 V / 820 mA

Description

Medium-mu triode plus frame-grid sharp-cutoff pentode for television AGC and video-amplifier service.

Socket description

Duodecar 12-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: E12
Socket code: B12C
Base pins: 12
Nominal heater voltage: 6.3 V
Nominal heater current: 820 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

E12 - 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

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 40000 Ω
Transconductance: 0.03 S
Max plate voltage: 330 V
Max screen voltage: 200 V
Max plate dissipation: 10 W
Max screen dissipation: 1.5 W

Frame-grid video pentode section.

Section 2

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 8500 Ω
Transconductance: 0.0046 S
Amplification factor: 39
Max plate voltage: 330 V
Max plate dissipation: 1.1 W

Triode section for AGC amplifier service.

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

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

HeaterOrFilamentVoltageNominal
6.3 V
HeaterOrFilamentCurrentNominal
820 mA
Maximum Plate Voltage
330 V
Maximum Screen Voltage
200 V
Maximum Plate Dissipation
10 W
Maximum Screen Dissipation
1.5 W

Characteristic

Plate Resistance
40000 Ohm
Transconductance
30000 uS

SECTION 2

Triode

Characteristic

Plate Resistance
8500 Ohm
Transconductance
4600 uS
Amplification Factor
39

Other

Maximum Plate Voltage
330 V
Maximum Plate Dissipation
1.1 W

Data set 02

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

Plate Voltage
250 V
Section2
Grid No.2 Voltage
150 V
Section2
Cathode Bias Resistor
66 ohm
Section2
Plate Current
28 mA
Section2
Grid No.2 Current
5.6 mA
Section2
Grid Voltage at 100 uA plate current
-5.4 V
Section2

SECTION 2

Triode

Characteristic

Plate Voltage
150 V
Section1
Cathode Bias Resistor
350 ohm
Section1
Plate Current
6.2 mA
Section1
Grid Voltage at 20 uA plate current
-7 V
Section1