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Rectifier - Damper Diode ·Rectifier

6AU4GTA

Improved 6AU4-family television damper diode for horizontal-deflection energy recovery, combining approximately 4.5 kV inverse voltage with high peak-current capability.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
4CG
Socket code
IO
Base pins
8
Nominal heater
6.3 V / 1.8 A

Description

Glass-octal half-wave vacuum rectifier used as a damper tube in horizontal-deflection circuits of color and wide-angle 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
4CG
Socket code
IO
Base pins
8
Nominal heater voltage
6.3 V
Nominal heater current
1.8 A
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

4CG - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1IC—IC

EIA chart transcription; independent manufacturer corroboration pending

Unverified

EIA Base Connections, printed page 127, 4CG

PIN2IC—IC

EIA chart transcription; independent manufacturer corroboration pending

Unverified

EIA Base Connections, printed page 127, 4CG

PIN3KAK — Cathode

EIA chart transcription; independent manufacturer corroboration pending

Unverified

EIA Base Connections, printed page 127, 4CG

PIN5PAP — Plate (Anode)

EIA chart transcription; independent manufacturer corroboration pending

Unverified

EIA Base Connections, printed page 127, 4CG

PIN7H—H — Heater

EIA chart transcription; independent manufacturer corroboration pending

Unverified

EIA Base Connections, printed page 127, 4CG

PIN8H—H — Heater

EIA chart transcription; independent manufacturer corroboration pending

Unverified

EIA Base Connections, printed page 127, 4CG

Section ratings

1 physical section, each with unique specifications.

Section 1

Rectifier

X-ray radiationInterelectrode capacitances
Max plate dissipation
6.5 W
Rectifier peak inverse voltage
4500 V
Rectifier nominal output current
210 mA
Rectifier peak forward current
1.3 A
Rectifier forward voltage drop
25 V
Rectifier max heater-cathode voltage
4500 V

Promoted from published ratings/characteristics; identical repeated sections compressed where applicable.

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

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Application

  • Service

    Television damping diode

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Heater voltage

    6.3 V

  • Heater current

    1.8 A

  • Heater-cathode voltage, heater negative, DC

    900 V

  • Heater-cathode voltage, heater negative, total DC and peak

    4500 V

  • Peak plate current

    1200 mA

Capacitance

  • Cathode to plate and heater

    11.5 pF

Data set 03

1965 Westinghouse Data Book

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristic

  • HeaterOrFilamentVoltage

    6.3 V

  • HeaterOrFilamentCurrent

    1.8 A

  • Forward Voltage Drop

    17 V

    PlateCurrent=200mA

Other

  • PeakInverseVoltageMaximum

    4500 V

    DamperService

  • PeakPlateCurrentMaximum

    1200 mA

    DamperService

  • Average Plate Current Maximum

    325 mA

    DamperService

  • Plate Dissipation Maximum

    6 W

    DamperService

  • HeaterCathodeVoltageMaximum

    4500 V

    Pulse

Data set 04

1966 Tung Sol Electronic Tubes 1 of 4

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristic

  • Heater voltage

    6.3 V

    Published table

  • Heater current

    1.8 A

    Published table

  • Average tube voltage drop

    25 V

    At350mA

Other

  • Maximum peak inverse plate voltage

    4500 V

    DamperService

  • Maximum DC plate current

    275 mA

    DamperService

  • Maximum steady-state peak plate current

    1100 mA

    DamperService

Data set 05

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Heater voltage nominal

    6.3 V

  • Heater current

    1.8 A

  • Peak inverse plate voltage

    4500 V

    DamperService

  • Peak plate current

    1300 mA

    DamperService

  • DC plate current

    210 mA

    DamperService

  • Plate dissipation

    6.5 W

    DamperService

  • Peak heater-cathode voltage heater negative

    4500 V

    DamperService

  • Peak heater-cathode voltage heater positive

    300 V

    DamperService

Data set 06

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Heater Voltage (ac/dc)

    6.3 V

    Published in approved 6AU4GTA target entry; Section1

  • Heater Current

    1.8 A

    Published in approved 6AU4GTA target entry; Section1

  • Peak Inverse Plate Voltage#

    4500 V

    Published in approved 6AU4GTA target entry; Section1

  • Peak Plate Current

    1300 mA

    Published in approved 6AU4GTA target entry; Section1

  • Average Plate Current

    210 mA

    Published in approved 6AU4GTA target entry; Section1

  • Plate Dissipation

    6.5 W

    Published in approved 6AU4GTA target entry; Section1

  • Peak value +300

    -4500 V

    Published in approved 6AU4GTA target entry; Section1

  • Average value -(-100

    -900 V

    Published in approved 6AU4GTA target entry; Section1

Capacitance

  • Plate to Heater and Cathode

    8.5 pF

    Published in approved 6AU4GTA target entry; Section1

  • Cathode to Heater and Plate

    11.5 pF

    Published in approved 6AU4GTA target entry; Section1

  • Heater to Cathode

    4 pF

    Published in approved 6AU4GTA target entry; Section1