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Voltage Pentode or Tetrode (under 100V) ·Pentode

6932

Extremely low-drain directly heated subminiature pentode for portable low-voltage amplifier service, using a 1.25 V, 20 mA filament.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
SUBMINIATURE7
Base pins
7
Nominal heater
1.25 V / 20 mA

Description

Low-filament-current directly heated subminiature pentode for portable low-drain amplifier service.

Socket description

Subminiature 7-lead base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
SUBMINIATURE7
Base pins
7
Nominal heater voltage
1.25 V
Nominal heater current
20 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

Pentode

X-ray radiationInterelectrode capacitances
Transconductance
0.000475 S
Max plate voltage
67.5 V
Max cathode current
3 mA

Published maximum ratings and typical characteristics promoted from the approved source; identical repeated sections compressed where applicable.

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

1938 Raytheon

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • HeaterVoltageNominal

    1.25 V

    Nominal

  • HeaterCurrentNominal

    20 mA

    Nominal

  • Maximum Plate Voltage

    67.5 V

  • Maximum Cathode Current

    3 mA

Characteristic

  • Transconductance

    475 µS

    Typical