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Voltage Dual Tetrode ·Tetrode-Tetrode

CK5969

Directly heated subminiature twin tetrode designed for RF power-amplifier service in compact electronic equipment.

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

Description

Subminiature directly heated twin tetrode for RF power-amplifier service.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
8CB
Socket code
-
Base pins
8
Nominal heater voltage
1.25 V
Nominal heater current
200 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

8CB - 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
135 V
Max screen voltage
45 V

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

Section 2

Tetrode

X-ray radiationInterelectrode capacitances
Transconductance
0.0017 S
Max plate voltage
135 V
Max screen voltage
45 V

Second physical twin-tetrode section restored.

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

Tetrode

Other

  • Plate voltage

    135 V

    RFPowerAmplifier;EachSection

  • Control-grid voltage

    -3 V

    RFPowerAmplifier;EachSection

  • Screen voltage

    45 V

    RFPowerAmplifier;EachSection

  • Plate current

    6 mA

    RFPowerAmplifier;EachSection

  • Screen current

    0.5 mA

    RFPowerAmplifier;EachSection

Characteristic

  • Transconductance

    1700 µS

    EachSection