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Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Power - Beam Single (NOT sweep) (under 10W) ·BeamPower

6FG5

Shadow-grid beam pentode designed for VHF television RF amplification, using an internal grid to reduce screen-current demand relative to plate current.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B7G
Base pins
7
Nominal heater
6.3 V / 450 mA

Description

The 6FG5 is a shadow-grid beam pentode for VHF television RF amplification. An internal grid reduces the ratio of screen current to plate current.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

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

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

Beam Power

X-ray radiationInterelectrode capacitances
Plate resistance
250000 Ω
Transconductance
0.0095 S
Max plate voltage
275 V
Max screen voltage
275 V
Max plate dissipation
2.75 W
Max screen dissipation
0.15 W
Max cathode current
20 mA

Shadow-grid beam pentode; 20 mA DC cathode-current maximum.

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

1966 Tung Sol Electronic Tubes 2 of 4

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Plate_voltage

    125 V

    ClassA

  • Screen_voltage

    125 V

    ClassA

Characteristic

  • Plate_current

    9 mA

    ClassA

  • Screen_current

    0.42 mA

    ClassA

Data set 02

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristic

  • Plate Voltage

    250 V

    AverageCharacteristics

  • Screen Voltage

    250 V

    AverageCharacteristics

  • Grid Number 1 Voltage

    -0.2 V

    AverageCharacteristics

  • Plate Current

    9 mA

    AverageCharacteristics

  • Screen Current

    0.42 mA

    AverageCharacteristics