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Voltage Pentode - Remote Cutoff (single) ·Pentode

5732

Remote- or semi-remote-cutoff pentode designed for RF, IF, variable-mu, or controlled-gain amplifier service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
7R
Socket code
IO
Base pins
7
Nominal heater
6.3 V / 300 mA

Description

Remote-cutoff RF pentode, a special 6K7 type, for Class A amplification.

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
7
Nominal heater voltage
6.3 V
Nominal heater current
300 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
800000 Ω
Transconductance
0.00145 S
Max plate voltage
300 V
Max screen voltage
125 V

Remote-cutoff RF pentode.

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

    7 pF

  • Output capacitance

    12 pF

  • Grid-to-plate capacitance

    0.005 pF

Other

  • Plate voltage

    250 V

    ClassA

  • Screen-grid voltage

    100 V

    ClassA

  • Grid voltage

    -3 V

    ClassA

  • Plate current

    7 mA

    ClassA

  • Screen-grid current

    1.7 mA

    ClassA

Characteristic

  • Plate resistance

    800000 ohm

  • Transconductance

    1450 uS