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Voltage Pentode or Tetrode (under 100V) ·Pentode

5910

Filament-type sharp-cutoff miniature pentode designed for radiosonde blocking-oscillator applications.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B7G
Base pins
7
Nominal heater
1.4 V / 50 mA

Description

Filament-type sharp-cutoff miniature pentode for radiosonde blocking-oscillator applications.

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
1.4 V
Nominal heater current
50 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
Plate resistance
2500000 Ω
Transconductance
0.00003 S
Max plate voltage
90 V
Max screen voltage
90 V
Max cathode current
6.5 mA

Published maximum ratings and characteristics promoted from the approved source; repeated identical 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

    1.4 V

    Nominal

  • HeaterCurrentNominal

    50 mA

    Nominal

  • Maximum Plate Voltage

    90 V

  • Maximum Screen Voltage

    90 V

  • Maximum Cathode Current

    6.5 mA

Characteristic

  • Transconductance

    30 µS

    Typical

  • Plate Resistance

    2500000 ohm

    Typical