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Voltage Pentode - Sharp Cutoff (single) ·Pentode

6D7

Sharp-cutoff pentode for fixed-gain Class-A voltage-amplifier service in general receiving and electronic equipment.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
7H
Socket code
B7G
Base pins
7
Nominal heater
6.3 V / 300 mA

Description

Sharp-cutoff pentode for Class A amplifier service.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

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

7H - 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

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
1000000 Ω
Transconductance
0.001225 S
Max plate voltage
300 V
Max screen voltage
125 V

Sharp-cutoff 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

Other

  • Plate voltage

    250 V

    ClassA

  • Screen-grid voltage

    100 V

    ClassA

  • Grid voltage

    -3 V

    ClassA

  • Plate current

    2 mA

    ClassA

  • Screen-grid current

    0.5 mA

    ClassA

Capacitance

  • Input capacitance

    5.2 pF

  • Output capacitance

    6.8 pF

  • Grid-to-plate capacitance

    0.005 pF