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Voltage - Triode (single) ·Triode

6J5

General-purpose medium-mu triode for oscillator and audio-frequency voltage-amplifier service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
6O
Socket code
IO
Base pins
8
Nominal heater
6.3 V / 300 mA

Description

The 6J5 is a general-purpose medium-mu triode intended for oscillator and audio-frequency amplifier service.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
6O
Socket code
IO
Base pins
8
Nominal heater voltage
6.3 V
Nominal heater current
300 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

6O - 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

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
7700 Ω
Transconductance
0.0026 S
Amplification factor
20
Max plate voltage
300 V
Max plate dissipation
2.5 W
Max cathode current
20 mA

General-purpose triode; useful operating characteristics 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

1937 Raytheon Radio Receiving Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Maximum plate voltage

    250 V

    Published datasheet rating

  • Plate voltage

    250 V

    ClassA

  • Plate current

    9 mA

    ClassA

Characteristic

  • Plate resistance

    7700 ohm

    Published datasheet characteristic

  • Transconductance

    2600 µS

    Published datasheet characteristic

  • Amplification factor

    20

    Published datasheet characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    300 mA

    Published heater rating

Data set 02

1940 RCA

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Heater voltage

    6.3 V

    Published nominal value

  • Heater current

    300 mA

    Published nominal value

  • Transconductance

    2600 µS

    Published operating characteristic

  • Amplification factor

    20

    Published operating characteristic

Data set 03

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Plate Resistance

    7700 ohm

  • Transconductance

    2600 µS

  • Amplification Factor

    20

Other

  • Maximum Plate Voltage

    300 V

  • Maximum Plate Dissipation

    2.5 W

  • Plate Voltage

    250 V

    ClassA

  • Grid Voltage

    -3.8 V

    ClassA

  • Plate Current

    9 mA

    ClassA

Data set 04

1953 RFT Rundfunk Technik

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • HeaterVoltageNominal

    6.3 V

    Nominal

  • HeaterCurrentNominal

    300 mA

    Nominal

  • Maximum Plate Voltage

    300 V

  • Maximum Plate Dissipation

    2.5 W

  • Maximum Cathode Current

    20 mA

Characteristic

  • Transconductance

    2600 µS

    Typical

  • Amplification Factor

    20

    Typical

  • Plate Resistance

    6700 ohm

    Typical

Data set 05

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Maximum plate voltage

    300 V

    Published handbook rating

  • Plate voltage

    250 V

    ClassA

  • Control-grid bias

    8 V

    ClassA

  • Plate current

    9 mA

    ClassA

Characteristic

  • Plate resistance

    7700 ohm

    Published handbook characteristic

  • Transconductance

    2600 µS

    Published handbook characteristic

  • Amplification factor

    20

    Published handbook characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    300 mA

    Published heater rating

Capacitance

  • Input capacitance

    3.4 pF

    Published capacitance column

  • Output capacitance

    3.6 pF

    Published capacitance column

  • Grid-to-plate capacitance

    3.4 pF

    Published capacitance column

Data set 06

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate Voltage

    250 V

    Published operating/characteristic table

  • Grid Voltage

    -8 V

    Published operating/characteristic table

Characteristic

  • Plate Current

    9 mA

    Published operating/characteristic table

  • Transconductance

    2600 uS

    Published operating/characteristic table

  • Plate Resistance

    7700 ohm

    Published operating/characteristic table

Data set 07

1966 Tung Sol Electronic Tubes 2 of 4

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate voltage

    250 V

    ClassA1

  • Grid voltage

    -8 V

    ClassA1

  • Plate current

    9 mA

    ClassA1

  • Maximum heater-cathode voltage

    90 V

    WholeTube