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

Voltage - Triode (single high frequency) ·Triode

6135

Miniature medium-mu triode for VHF local-oscillator, audio-amplifier, and general-purpose applications.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
6BG
Socket code
B7G
Base pins
7
Nominal heater
6.3 V / 175 mA

Description

Miniature medium-mu triode for VHF local-oscillator, audio-amplifier, and general-purpose applications.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
6BG
Socket code
B7G
Base pins
7
Nominal heater voltage
6.3 V
Nominal heater current
175 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

6BG - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1PAP — Plate (Anode)

Original EIA label P; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 127, 6BG

PIN2IC—IC

Original EIA label IC; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 127, 6BG

PIN3H—H — Heater

Chart transcription; manufacturer cross-check pending

Unverified

EIA Base Connections, printed page 127, 6BG

PIN4H—H — Heater

Chart transcription; manufacturer cross-check pending

Unverified

EIA Base Connections, printed page 127, 6BG

PIN5PAP — Plate (Anode)

Chart transcription; manufacturer cross-check pending

Unverified

EIA Base Connections, printed page 127, 6BG

PIN6G1AG1 — Control Grid

Chart transcription; manufacturer cross-check pending

Unverified

EIA Base Connections, printed page 127, 6BG

PIN7KAK — Cathode

Chart transcription; manufacturer cross-check pending

Unverified

EIA Base Connections, printed page 127, 6BG

Section ratings

1 physical section, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
6250 Ω
Transconductance
0.0031 S
Amplification factor
19.5
Max plate voltage
300 V
Max plate dissipation
3.5 W
Max cathode current
25 mA
Rectifier max heater-cathode voltage
90 V

Medium-mu triode.

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

Capacitance

  • Input capacitance

    1.5 pF

  • Output capacitance

    0.7 pF

  • Grid-to-plate capacitance

    1.4 pF

Other

  • Plate voltage

    250 V

    ClassA

  • Grid voltage

    -8.5 V

    ClassA

  • Plate current

    10.5 mA

    ClassA

  • Plate voltage

    100 V

    ClassA

  • Grid voltage

    0 V

    ClassA

  • Plate current

    11.8 mA

    ClassA

Characteristic

  • Plate resistance

    7700 ohm

    At250V

  • Transconductance

    2200 uS

    At250V

  • Amplification factor

    17

    At250V

  • Plate resistance

    6250 ohm

    At100V

  • Transconductance

    3100 uS

    At100V

  • Amplification factor

    19.5

    At100V

Data set 02

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • HeaterOrFilamentVoltageNominal

    6.3 V

  • HeaterOrFilamentCurrentNominal

    175 mA

  • Plate Voltage

    300 V

    Published datasheet table

  • Plate Dissipation

    3.5 W

    Published datasheet table

  • DC Cathode Current

    25 mA

    Published datasheet table

  • Heater Cathode Voltage

    90 V

    Published datasheet table

  • WithFixedBias

    0.25 Megohm

    Published datasheet table

  • WithCathodeBias

    1 Megohm

    Published datasheet table

Characteristic

  • PlateVoltageValue1

    100 V

    Published datasheet table

  • PlateVoltageValue2

    250 V

    Published datasheet table

  • GridVoltageValue1

    0 V

    Published datasheet table

  • GridVoltageValue2

    8.5 V

    Published datasheet table

  • AmplificationFactorValue1

    19.5

    Published datasheet table

  • AmplificationFactorValue2

    17

    Published datasheet table

  • PlateResistanceApproximateValue1

    6250 Ohm

    Published datasheet table

  • PlateResistanceApproximateValue2

    7700 Ohm

    Published datasheet table

  • TransconductanceValue1

    3100 uS

    Published datasheet table

  • TransconductanceValue2

    2200 uS

    Published datasheet table

  • PlateCurrentValue1

    11.8 mA

    Published datasheet table

  • PlateCurrentValue2

    10.5 mA

    Published datasheet table

  • GridVoltageApproximateForI10Microamperes

    10 uA

    Published datasheet table