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Voltage Dual Tetrode ·Tetrode-Tetrode

5969

Directly heated subminiature double tetrode designed for push-pull Class-C RF power-amplifier service at VHF frequencies.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
SUBMINIATURE8
Base pins
8
Nominal heater
1.25 V / 200 mA

Description

Directly heated subminiature double tetrode for push-pull Class-C RF amplifier service at VHF frequencies.

Socket description

Subminiature 8-lead base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
SUBMINIATURE8
Base pins
8
Nominal heater voltage
1.25 V
Nominal heater current
200 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

2 physical sections, each with unique specifications.

Section 1

Tetrode

X-ray radiationInterelectrode capacitances
Transconductance
0.0017 S
Max plate voltage
150 V
Max screen voltage
50 V
Max plate dissipation
0.96 W
Max cathode current
15 mA

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

Section 2

Tetrode

X-ray radiationInterelectrode capacitances
Transconductance
0.0017 S
Max plate voltage
150 V
Max screen voltage
50 V
Max plate dissipation
0.96 W
Max cathode current
15 mA

Second physical tetrode section restored under one-row-per-physical-section policy; identical to section 1.

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

Tetrode

Other

  • HeaterVoltageNominal

    1.25 V

    Nominal

  • HeaterCurrentNominal

    200 mA

    Nominal

  • Maximum Plate Voltage

    150 V

  • Maximum Screen Voltage

    50 V

  • Maximum Plate Dissipation

    0.96 W

  • Maximum Cathode Current

    15 mA

  • Typical Plate Voltage

    135 V

    ClassA

  • Typical Screen Voltage

    45 V

    ClassA

Characteristic

  • Transconductance

    1700 µS

    Typical