5968

Directly heated subminiature high-mu twin triode designed for push-pull mixer service in the VHF range, providing compact high-frequency frequency-conversion capability.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: -
Socket code: SUBMINIATURE8
Base pins: -
Nominal heater: 1.25 V / 120 mA

Description

Directly heated subminiature high-mu dual triode for push-pull mixer service in the VHF range.

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: 0.0013 S
Amplification factor: 50
Max cathode current: 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: 0.0013 S
Amplification factor: 50
Max cathode current: 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 Cathode Current
4 mA

Characteristic

Transconductance
1300 µS
Typical
Amplification Factor
50
Typical