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

Voltage - Triode (single) ·Triode

1G4GT

Directly heated medium-mu triode for Class A amplification, using a very low-power filament suited to battery-operated equipment.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
G-6X
Socket code
-
Base pins
7
Nominal heater
1.4 V / 50 mA

Description

Directly heated medium-mu triode for Class A amplification.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
G-6X
Socket code
-
Base pins
7
Nominal heater voltage
1.4 V
Nominal heater current
50 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

G-6X - 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
10700 Ω
Transconductance
0.000825 S
Amplification factor
8.8
Max plate voltage
110 V
Max cathode current
4 mA

Class A1 typical characteristics at 90 V plate.

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

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Maximum plate voltage

    110 V

  • Plate voltage

    90 V

    ClassA

  • Control-grid voltage

    -6 V

    ClassA

  • Plate current

    2.3 mA

    ClassA

  • Plate resistance

    10700 Ohm

    ClassA

  • Transconductance

    825 uS

    ClassA

  • Amplification factor

    8.8

    ClassA

Capacitance

  • Input capacitance

    2.2 pF

  • Output capacitance

    3.4 pF

  • Grid-to-plate capacitance

    2.8 pF

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Filament Voltage

    1.4 V

    Nominal

  • Filament Current

    50 mA

    Nominal

  • Plate Voltage

    90 V

    ClassA1

  • Grid Voltage

    -6 V

    ClassA1

  • Plate Current

    2.3 mA

    ClassA1

Capacitance

  • Grid To Plate Capacitance

    2.8 pF

  • Input Capacitance

    2.2 pF

  • Output Capacitance

    3.4 pF

Characteristic

  • Plate Resistance

    10700 ohm

    ClassA1

  • Transconductance

    825 uS

    ClassA1

  • Amplification Factor

    8.8

    ClassA1