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Voltage Pentode or Tetrode (under 100V) ·Pentode

CK5886

Subminiature directly heated electrometer pentode designed for measurement of extremely small currents, with exceptionally low control-grid current.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
5C
Socket code
-
Base pins
5
Nominal heater
1.25 V / 10 mA

Description

Subminiature directly heated electrometer pentode with an exceptionally low control-grid-current rating.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
5C
Socket code
-
Base pins
5
Nominal heater voltage
1.25 V
Nominal heater current
10 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

5C - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances
Transconductance
0.00016 S
Max plate voltage
10.5 V

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

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

Pentode

Other

  • Plate voltage

    10.5 V

    Electrometer

  • Control-grid voltage

    3 V

    Electrometer

  • Screen connection

    1

    TriodeConnection

  • Plate current

    0.2 mA

    Electrometer

  • Maximum control-grid current

    0.0000000002 mA

    Electrometer

Characteristic

  • Transconductance

    160 µS

    Electrometer

  • Amplification factor

    2

    Electrometer