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

Voltage - Triode (with diode, heptode or hexode) ·Diode-Diode-Triode

6V7G

Double-diode triode combining radio detector and AVC rectification with subsequent voltage amplification. The paired diodes handle signal and control-voltage functions while the triode provides receiver audio or voltage gain.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
3
Base
8
Socket code
IO
Base pins
6
Nominal heater
6.3 V / 300 mA

Description

Double-diode triode with characteristics equivalent to type 85 apart from base arrangement.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

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

8 - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

3 physical sections, each with unique specifications.

Section 1

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Representative row for identical repeated sections.

Section 2

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Section 3 extracted from 6V7G.pdf.

Section 3

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
7500 Ω
Transconductance
0.0011 S
Amplification factor
8.3
Max plate voltage
250 V
Max plate dissipation
2 W

Promoted from clearly identified printed ratings/characteristics; additional operating points and capacitances retained in TUBE_SECTION_PARAMETER.

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 3

Triode

Capacitance

  • Grid-to-plate capacitance

    1.7 pF

    Section1

  • Input capacitance

    2 pF

    Section1

  • Output capacitance

    3.5 pF

    Section1

Other

  • Plate voltage

    135 V

    ClassA

  • Grid bias

    -10.6 V

    ClassA

  • Plate current

    3.7 mA

    ClassA

  • Plate voltage

    180 V

    ClassA

  • Grid bias

    -13.5 V

    ClassA

  • Plate current

    6 mA

    ClassA

  • Plate voltage

    250 V

    ClassA

  • Grid bias

    -20 V

    ClassA

  • Plate current

    8 mA

    ClassA

  • Load resistance

    20000 Ω

    ClassA

  • Power output

    350 mW

    ClassA

Characteristic

  • Plate resistance

    11000 Ω

    135VPlate

  • Transconductance

    750 µS

    135VPlate

  • Plate resistance

    8500 Ω

    180VPlate

  • Transconductance

    975 µS

    180VPlate

  • Plate resistance

    7500 Ω

    250VPlate

  • Transconductance

    1100 µS

    250VPlate

  • Amplification factor

    8.3

    Section1

Data set 02

1938 Raytheon

Published operating points and test conditions from this source.

SECTION 3

Triode

Other

  • Heater Vcliaze

    6.5 V

    Heater Vcliaze 6.5 volts

  • Heater Cvrrent

    300 mA

    Heater Cvrrent 0.3 ampere

  • Plate 135

    250 V

    Plate 135 250 volts

  • Grig

    -10.5 V

    Grig -10.5 -20 volts

  • Plate Resis. 11000

    7500 Ω

    Plate Resis. 11000 7500 ohms

Data set 03

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Diode

Other

  • Heater voltage

    6.3 V

    Nominal

  • Heater current

    300 mA

    Nominal

Characteristic

  • Plate current

    3.7 mA

    Published operating table; OperatingPoint1

  • Plate current

    6 mA

    Published operating table; OperatingPoint2

  • Plate current

    8 mA

    Published operating table; OperatingPoint3

  • Transconductance

    750 uS

    Published operating table; OperatingPoint1

  • Transconductance

    975 uS

    Published operating table; OperatingPoint2

  • Transconductance

    1100 uS

    Published operating table; OperatingPoint3

  • Plate resistance

    11000 ohm

    Published operating table; OperatingPoint1

  • Plate resistance

    8500 ohm

    Published operating table; OperatingPoint2

  • Plate resistance

    7500 ohm

    Published operating table; OperatingPoint3

SECTION 3

Triode

Other

  • Heater voltage

    6.3 V

    Nominal

  • Heater current

    300 mA

    Nominal

Characteristic

  • Plate current

    3.7 mA

    Published operating table; OperatingPoint1

  • Plate current

    6 mA

    Published operating table; OperatingPoint2

  • Plate current

    8 mA

    Published operating table; OperatingPoint3

  • Transconductance

    750 uS

    Published operating table; OperatingPoint1

  • Transconductance

    975 uS

    Published operating table; OperatingPoint2

  • Transconductance

    1100 uS

    Published operating table; OperatingPoint3

  • Plate resistance

    11000 ohm

    Published operating table; OperatingPoint1

  • Plate resistance

    8500 ohm

    Published operating table; OperatingPoint2

  • Plate resistance

    7500 ohm

    Published operating table; OperatingPoint3