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Voltage - Triode (single high frequency) ·Triode

6BN4A

Medium-mu triode for television and general amplifier applications, including VHF receiving circuits requiring useful voltage and RF gain.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
7EG
Socket code
B7G
Base pins
7
Nominal heater
6.3 V / 200 mA

Description

Medium-mu triode for television and general amplifier applications. The supplied datasheet was read for heater data, maximum ratings, characteristics, typical operating information, and interelectrode capacitances where published.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
7EG
Socket code
B7G
Base pins
7
Nominal heater voltage
6.3 V
Nominal heater current
200 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

7EG - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1KAK — Cathode

Chart transcription; independent verification pending

Unverified

EIA Base Connections, printed page 129, 7EG

PIN2G1AG1 — Control Grid

Chart transcription; independent verification pending

Unverified

EIA Base Connections, printed page 129, 7EG

PIN3H—H — Heater

Chart transcription; independent verification pending

Unverified

EIA Base Connections, printed page 129, 7EG

PIN4H—H — Heater

Chart transcription; independent verification pending

Unverified

EIA Base Connections, printed page 129, 7EG

PIN5PAP — Plate (Anode)

Chart transcription; independent verification pending

Unverified

EIA Base Connections, printed page 129, 7EG

PIN6KAK — Cathode

Chart transcription; independent verification pending

Unverified

EIA Base Connections, printed page 129, 7EG

PIN7G1AG1 — Control Grid

Chart transcription; independent verification pending

Unverified

EIA Base Connections, printed page 129, 7EG

Section ratings

1 physical section, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
5400 Ω
Transconductance
0.0077 S
Amplification factor
43
Max plate voltage
275 V
Max plate dissipation
2.2 W
Max cathode current
22 mA

Published promoted values applied where applicable; additional table data retained as parameters.

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

  • Plate Voltage

    150 V

    ClassA

Characteristic

  • Plate Current

    9 mA

    ClassA

  • TransconductancePublished

    7700 uS

    ClassA

Data set 02

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Heater voltage

    6.3 V

  • Heater current

    200 mA

Other

  • Maximum plate voltage

    200 V

  • Maximum plate dissipation

    2 W

  • Typical plate voltage

    150 V

  • Typical plate current

    12 mA

Capacitance

  • Grid-to-plate capacitance

    1.8 pF

Data set 03

1966 Tung Sol Electronic Tubes 1 of 4

Published operating points and test conditions from this source.

SECTION 1

Triode

Capacitance

  • Grid-to-plate capacitance

    1.2 pF

  • Input capacitance

    3.2 pF

  • Output capacitance

    1.4 pF

  • Heater-to-cathode capacitance

    2.8 pF

Other

  • Plate voltage

    150 V

    ClassA; VHF

  • Plate current

    9 mA

    ClassA; VHF

Characteristic

  • Amplification factor

    43

  • Plate resistance

    5.4 kOhm

  • Transconductance

    7700 uS

Data set 04

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Voltage (AC or DC)

    6.3 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Current

    200 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Grid to plate

    1.2

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Grid to cathode and heater

    3.2

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate to cathode and heater

    1.4

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate Supply Voltage

    150 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate Resistance (Approx )

    5400 ohm

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Transconductance

    7700

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate Current

    9 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Grid Volts (Approx.) for plate µa = 100 — published value 1

    100 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Grid Volts (Approx.) for plate µa = 100 — published value 2

    -6 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 1 -Cathode — published value 1

    1

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 1 -Cathode — published value 2

    5

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 2 -Grid — published value 1

    2

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 2 -Grid — published value 2

    6

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 3 -Heater — published value 1

    3

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 3 -Heater — published value 2

    7

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 4 -Heater

    4

    Published datasheet value; multiple values represent separate source-table limits or conditions.

Other

  • PLATE VOLTAGE

    275 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Positive-bias value

    0 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • CATHODE CURRENT

    22 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • PLATE DISSIPATION

    2.2 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Heater negative with respect to cathode

    100 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Heater positive with respect to cathode

    100 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Grid—Circuit Resistance

    0.5 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

Data set 05

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Capacitance

  • Grid to Cathode and Heater

    3.2 pF

    Published datasheet value

  • Plate to Cathode and Heater

    1.4 PF

    Published datasheet value

  • Internal Shield

    3.3 pF

    Published datasheet value

Characteristic

  • Plate Voltage

    275 volts

    Published datasheet value

  • Grid Voltage, Positive-bias value

    0 volts

    Published datasheet value

  • Plate-Supply Voltage

    150 volts

    Published datasheet value

  • Cathode-Bias Resistor

    220 ohms

    Published datasheet value

  • Plate Resistance (Approx.)

    5400 ohms

    Published datasheet value

  • Plate Current

    9 mA

    Published datasheet value

  • Grid-Circuit Resistance

    0.5 megohm

    Published datasheet value

  • age) 11

    11 seconds

    Published datasheet value

  • Plate-Supply Voltage

    330 volts

    Published datasheet value

  • Grid-No.2 Voltage

    110 volts

    Published datasheet value

  • Cathode Current

    13 mA

    Published datasheet value

  • Transconductance

    0 A/V

    Promoted from published datasheet table

  • Amplification Factor

    43

    Promoted from published datasheet table

Other

  • Grid-No. 1 Voltage, Positive peak value

    60 volts

    Published datasheet value

  • Maximum Plate Voltage

    275 V

    Promoted from published datasheet table

  • Maximum Screen Voltage

    110 V

    Promoted from published datasheet table