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Voltage Pentode - Sharp Cutoff (single) ·Pentode

6W7G

Sharp-cutoff pentode designed for RF, IF, wide-band, or high-frequency voltage-amplifier service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
7R
Socket code
IO
Base pins
8
Nominal heater
6.3 V / 150 mA

Description

Fixed-slope RF pentode amplifier.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
7R
Socket code
IO
Base pins
8
Nominal heater voltage
6.3 V
Nominal heater current
150 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

7R - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1SHASH — Internal Shield

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7R

PIN2H—H — Heater

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7R

PIN3PAP — Plate (Anode)

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7R

PIN4G2AG2 — Screen Grid

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7R

PIN5G3AG3 — Suppressor Grid

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7R

PIN7H—H — Heater

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7R

PIN8KAK — Cathode

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7R

CAP1G1AG1 — Control Grid

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7R

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
1500000 Ω
Transconductance
0.001205 S
Max plate voltage
300 V
Max screen voltage
100 V
Max plate dissipation
0.4 W
Max screen dissipation
0.1 W

Sharp-cutoff pentode section.

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

Pentode

Capacitance

  • Input capacitance

    5 pF

  • Output capacitance

    8.5 pF

  • Grid-to-plate capacitance

    0.007 pF

Other

  • Plate voltage

    250 V

    ClassA

  • Screen-grid voltage

    100 V

    ClassA

  • Grid voltage

    -3 V

    ClassA

Characteristic

  • Plate resistance

    1500000 ohm

    ClassA

  • Transconductance

    1225 uS

    ClassA