CK5968

Directly heated subminiature twin triode specifically intended for mixer service in compact high-frequency receiving or frequency-conversion equipment.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 8CE
Socket code: SUBMINIATURE8
Base pins: 8
Nominal heater: 1.25 V / 120 mA

Description

Subminiature directly heated twin triode for mixer service.

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: 8CE
Socket code: SUBMINIATURE8
Base pins: 8
Nominal heater voltage: 1.25 V
Nominal heater current: 120 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

8CE - 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: 45
Max plate voltage: 45 V

Promoted only from clearly identified printed electrical values; additional values retained in TUBE_SECTION_PARAMETER.

Section 2

Triode

X-ray radiationInterelectrode capacitances

Transconductance: 0.0013 S
Amplification factor: 45
Max plate voltage: 45 V

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

195X Raytheon Special Purpose Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Plate voltage
45 V
Mixer;EachSection
Control-grid voltage
0 V
Mixer;EachSection
Plate current
0.7 mA
Mixer;EachSection

Characteristic

Amplification factor
45
EachSection
Transconductance
1300 µS
EachSection