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Tube Tinker — Electron Tube Database
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Voltage - Triode (under 100V) ·Triode-Triode

5967

Directly heated subminiature twin triode for push-pull Class-A RF amplification, mixing, and oscillator service at VHF, combining compact construction with high-frequency capability.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
SUBMINIATURE8
Base pins
-
Nominal heater
1.25 V / 120 mA

Description

Directly heated subminiature dual triode for push-pull Class-A RF amplification, mixing, and oscillator service at VHF.

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
-
Nominal heater voltage
1.25 V
Nominal heater current
120 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

Triode

X-ray radiationInterelectrode capacitances
Transconductance
0.002 S
Amplification factor
17
Max plate voltage
50 V
Max cathode current
4.4 mA

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

Section 2

Triode

X-ray radiationInterelectrode capacitances
Transconductance
0.002 S
Amplification factor
17
Max plate voltage
50 V
Max cathode current
4.4 mA

Second physical triode section; electrically identical twin section.

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

Triode

Other

  • HeaterVoltageNominal

    1.25 V

    Nominal

  • HeaterCurrentNominal

    120 mA

    Nominal

  • Maximum Plate Voltage

    50 V

  • Maximum Cathode Current

    4.4 mA

Characteristic

  • Transconductance

    2000 µS

    Typical

  • Amplification Factor

    17

    Typical