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Power - Pentode Single (NOT beam) (under 10W) ·Pentode

6AG7

High-transconductance pentode for television video output, cathode-follower, and other wideband power-amplifier applications.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
B8-21
Socket code
IO
Base pins
8
Nominal heater
6.3 V / 650 mA

Description

Power pentode used in video-amplifier output stages of color and black-and-white television receivers.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
B8-21
Socket code
IO
Base pins
8
Nominal heater voltage
6.3 V
Nominal heater current
650 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

B8-21 - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
130000 Ω
Transconductance
0.011 S
Amplification factor
770
Max plate voltage
300 V
Max screen voltage
300 V
Max plate dissipation
9 W
Max screen dissipation
1.5 W
Max cathode current
40 mA

High-transconductance broadband-amplifier pentode.

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

1940 RCA

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • HeaterVoltageNominal

    6.3 V

    Nominal

  • HeaterCurrentNominal

    650 mA

    Nominal

  • Maximum Plate Voltage

    300 V

  • Maximum Screen Voltage

    300 V

  • Maximum Plate Dissipation

    8.7 W

  • Maximum Cathode Current

    40 mA

Characteristic

  • Transconductance

    7700 µS

    Typical

  • Amplification Factor

    770

    Typical

  • Plate Resistance

    100000 ohm

    Typical

  • VideoVoltageOutputPeakToPeak

    70 V

    4 MHz bandwidth amplifier

Data set 02

1953 RFT Rundfunk Technik

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • HeaterVoltageNominal

    6.3 V

    Nominal

  • HeaterCurrentNominal

    650 mA

    Nominal

  • Maximum Plate Voltage

    330 V

  • Maximum Screen Voltage

    330 V

  • Maximum Plate Dissipation

    9 W

  • Maximum Screen Dissipation

    1.5 W

  • Maximum Cathode Current

    125 mA

Characteristic

  • Transconductance

    11000 µS

    Typical

  • Plate Resistance

    90000 ohm

    Typical

Data set 03

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Plate voltage

    300 V

    ClassA

  • Screen-grid voltage

    150 V

    ClassA

  • Grid voltage

    -3 V

    ClassA

  • Plate current

    30 mA

    ClassA

  • Screen-grid current

    7 mA

    ClassA

  • Load resistance

    10000 ohm

    ClassA

  • Power output

    3 W

    ClassA

Data set 04

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Plate Voltage

    300 V

    ClassA

Characteristic

  • TransconductancePublished

    11000 uS

    ClassA

Data set 05

1966 Tung Sol Electronic Tubes 1 of 4

Published operating points and test conditions from this source.

SECTION 1

Pentode

Capacitance

  • Grid-to-plate capacitance maximum

    0.06 pF

    Section1

  • Input capacitance

    13 pF

    Section1

  • Output capacitance

    7.5 pF

    Section1

  • Grid-1 to grid-2 capacitance

    5.2 pF

    Section1

  • Heater-to-cathode capacitance

    10.7 pF

    Section1

Other

  • Application

    Video output amplifier or cathode-follower service

    Section1

  • Maximum heater-cathode voltage

    90 V

    Section1

Data set 06

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • HeaterOrFilamentVoltageNominal

    6.3 V

  • HeaterOrFilamentCurrentNominal

    650 mA

  • Maximum Plate Voltage

    300 V

  • Maximum Screen Voltage

    300 V

  • Maximum Plate Dissipation

    9 W

  • Maximum Screen Dissipation

    1.5 W

  • Typical Plate Voltage

    300 V

    ClassA

  • Typical Screen Voltage

    150 V

    ClassA

  • Zero Signal Plate Current

    30 mA

    ClassA

  • Maximum Signal Power Output

    3 W

    ClassA

Characteristic

  • Plate Resistance

    130000 Ohm

  • Transconductance

    11000 uS

Data set 07

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Pentode

Capacitance

  • Grid No.l to Plate

    0.06 pF

    Capacitance

  • and Internal Shield

    13 pF

    Capacitance

  • and Internal Shield

    7.5 pF

    Capacitance

Other

  • Plate Voltage

    300 V

    MaximumRatings

  • Grid-No.2 Voltage

    300 V

    MaximumRatings

  • Grid-No.l Voltage,

    0 V

    MaximumRatings

  • Plate Dissipation

    9 W

    MaximumRatings

  • Grid-No.2 Input

    1.6 W

    MaximumRatings

  • For fixed-bias operation

    0.26 megohm

    MaximumCircuitValues

  • For cathode-bias operation

    1 megohm

    MaximumCircuitValues

Characteristic

  • Plate Voltage

    300 V

    Characteristics

  • Grid-No.2 (Screen-Grid) Voltage

    160 V

    Characteristics

  • Zero-Signal Grid-No.2 Current

    30 mA

    Characteristics

  • Maximum-Signal Grid-No.2 Current

    30.6 mA

    Characteristics

  • Zero-Signal Grid-No.2 Current

    7 mA

    Characteristics

  • Maximum-Signal Grid-No.2 Current

    9 mA

    Characteristics

  • Plate Resistance

    0.13 megohm

    Characteristics

  • Load Resistance

    10000 ohm

    Characteristics