Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Voltage - Dual Triode (similar) ·Triode-Triode

6CG7

Medium-mu twin triode used as combined vertical- and horizontal-deflection oscillator in television receivers, with pulse ratings supporting demanding sweep-generator operation.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
9AJ
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 600 mA

Description

Medium-mu twin triode used as combined vertical- and horizontal-deflection oscillator in television receivers.

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
9AJ
Socket code
B9A
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
600 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

9AJ - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN12PBP — Plate (Anode)

Numbered source electrode preserved; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9AJ

PIN22G1BG1 — Control Grid

Source label preserved; pending confirmation

Unverified

EIA Base Connections, printed page 131, 9AJ

PIN32KBK — Cathode

Numbered source electrode preserved; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9AJ

PIN4H—H — Heater

Numbered source electrode preserved; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9AJ

PIN5H—H — Heater

Numbered source electrode preserved; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9AJ

PIN61PAP — Plate (Anode)

Numbered source electrode preserved; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9AJ

PIN71G1AG1 — Control Grid

Source label preserved; pending confirmation

Unverified

EIA Base Connections, printed page 131, 9AJ

PIN81KAK — Cathode

Numbered source electrode preserved; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9AJ

PIN9ISAIS — Internal Screen

Numbered source electrode preserved; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9AJ

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
6700 Ω
Transconductance
0.003 S
Amplification factor
20
Max plate voltage
330 V
Max plate dissipation
4 W
Max cathode current
20 mA

Each identical triode; total both-plate dissipation 5 W

Section 2

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
6700 Ω
Transconductance
0.003 S
Amplification factor
20
Max plate voltage
330 V
Max plate dissipation
4 W
Max cathode current
20 mA

Second physical triode section; electrically identical twin section.

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

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Heater voltage

    6.3 V

  • Heater current

    600 mA

  • Plate voltage

    90250 V

    Typical operating conditions

Data set 02

1965 Westinghouse Data Book

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Heater Voltage

    6.3 V

  • Heater Current

    600 mA

Other

  • Maximum Plate Voltage

    330 V

  • Maximum Plate Dissipation

    -

Data set 03

1966 Tung Sol Electronic Tubes 2 of 4

Published operating points and test conditions from this source.

SECTION 1

Triode

Capacitance

  • Grid-to-plate capacitance

    4 pF

    Section1

  • Input capacitance

    2.3 pF

    Section1

  • Output capacitance

    2.2 pF

    Section1

  • Grid-to-plate capacitance

    4 pF

    Section2

  • Input capacitance

    2.3 pF

    Section2

  • Output capacitance

    2.2 pF

    Section2

Other

  • Negative pulse grid voltage

    440 V

    VerticalDeflection

  • Negative pulse grid voltage

    660 V

    HorizontalDeflection

  • Peak cathode current

    77 mA

    VerticalDeflection

  • Peak cathode current

    330 mA

    HorizontalDeflection

  • Plate voltage

    250 V

    ClassA

  • Grid voltage

    -8 V

    ClassA

  • Plate current

    5 mA

    ClassA

  • Heater warm-up time

    11 s

Data set 04

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Total Plate Dissipation Both Plates

    5 W

    AllSections

  • Peak Cathode Current

    300 mA

    Pulse

Data set 05

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Heater Voltage (ac/dc) 6.3 8.4

    12.6 V

    Published in approved 12FQ7 target entry; Section1

  • Heater Current 0.6 0.45

    300 mA

    Published in approved 12FQ7 target entry; Section1

  • Heater Warm-up Time (Average)

    11 seconds

    Published in approved 12FQ7 target entry; Section1

  • Grid to Plate 3.6

    3.8 pF

    Published in approved 12FQ7 target entry; Section1

  • Grid to Cathode and Heater 2.4

    2.4 pF

    Published in approved 12FQ7 target entry; Section1

  • Plate to Cathode and Heater 0.34

    0.26 pF

    Published in approved 12FQ7 target entry; Section1

  • Plate Voltage

    330 V

    Published in approved 12FQ7 target entry; Section1

  • Grid Voltage, Positive-bias value

    0 V

    Published in approved 12FQ7 target entry; Section1

  • Cathode Current

    22 mA

    Published in approved 12FQ7 target entry; Section1

  • For both plates with both units opex'ating

    5.7 W

    Published in approved 12FQ7 target entry; Section1

  • Plate Voltage 90

    250 V

    Published in approved 12FQ7 target entry; Section1

  • Grid Voltage 0

    -8 V

    Published in approved 12FQ7 target entry; Section1

  • Plate Resistance (Approx.) 6700

    7700 Ω

    Published in approved 12FQ7 target entry; Section1

  • DC Plate Voltage 330

    330 V

    Published in approved 12FQ7 target entry; Section1

  • Peak Negative-Pulse Grid Voltage 440

    660 V

    Published in approved 12FQ7 target entry; Section1

  • Peak Cathode Current 77

    330 mA

    Published in approved 12FQ7 target entry; Section1

  • Average Cathode Current 22

    22 mA

    Published in approved 12FQ7 target entry; Section1

  • For either plate 4

    4 W

    Published in approved 12FQ7 target entry; Section1

  • For both plates with both units operating . . . 5.7

    6.7 W

    Published in approved 12FQ7 target entry; Section1

  • Grid-Circuit Resistance 2.2

    2.2 MΩ

    Published in approved 12FQ7 target entry; Section1

  • Heater Voltage (ac/dc) 2.4 2.9

    6.3 V

    Published in approved 12FQ7 target entry; Section1

  • Heater Current 0.6 0.45

    200 mA

    Published in approved 12FQ7 target entry; Section1

  • Heater Warm-up Time (Average) 11

    11 seconds

    Published in approved 12FQ7 target entry; Section1

  • Plate Voltage

    300 V

    Published in approved 12FQ7 target entry; Section1

  • Grid-No.3 (Screen-Grid) Voltage

    150 V

    Published in approved 12FQ7 target entry; Section1

  • Negative-bias value

    60 V

    Published in approved 12FQ7 target entry; Section1

  • Positive-bias value

    0 V

    Published in approved 12FQ7 target entry; Section1

  • Cathode Current

    20 mA

    Published in approved 12FQ7 target entry; Section1

  • Plate Dissipation

    3.25 W

    Published in approved 12FQ7 target entry; Section1

  • Grid-No.3 Input

    0.16 W

    Published in approved 12FQ7 target entry; Section1

  • Plate Voltage

    275 V

    Published in approved 12FQ7 target entry; Section1

  • Grid-No.3 Voltage

    135 V

    Published in approved 12FQ7 target entry; Section1

  • Grid-No.l Voltage

    -0.2 V

    Published in approved 12FQ7 target entry; Section1

  • Grid-No.l-Circuit Resistance, for fixed-bias operation

    0.5 MΩ

    Published in approved 12FQ7 target entry; Section1

Capacitance

  • Plate of Unit No.l to Plate of Unit No

    2 pF

    Published in approved 12FQ7 target entry; Section1

  • Grid No.l to Plate 0.03

    0.016 pF

    Published in approved 12FQ7 target entry; Section1

  • No.3, and Grid No.4

    4.8 pF

    Published in approved 12FQ7 target entry; Section1

  • and Grid No

    4 pF

    Published in approved 12FQ7 target entry; Section1

Characteristic

  • Plate Current 10

    9 mA

    Published in approved 12FQ7 target entry; Section1

  • Grid Voltage (Approx.) for plate current of 10 /iA. —7

    -18 V

    Published in approved 12FQ7 target entry; Section1

  • 12.5 volts

    1.3 mA

    Published in approved 12FQ7 target entry; Section1

  • Plate Resistance (Approx. )

    0.24 MΩ

    Published in approved 12FQ7 target entry; Section1

  • Transconductance

    10000 µS

    Published in approved 12FQ7 target entry; Section1

  • Plate Current

    9 mA

    Published in approved 12FQ7 target entry; Section1

  • Grid-No.3 Current

    0.17 mA

    Published in approved 12FQ7 target entry; Section1

  • Grid-No.l Voltage (Approx.) for transconductance of

    100 µS

    Published in approved 12FQ7 target entry; Section1

  • Grid-No.l Voltage (Approx.) for transconductance of 100 /imhos

    -5 V

    Published in approved 12FQ7 target entry; Section1