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Voltage Pentode ·Pentode

CK5875

Directly heated subminiature pentode designed specifically for low-power radiosonde electronic service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
5A
Socket code
-
Base pins
5
Nominal heater
1.25 V / 100 mA

Description

CK5875 is a Pentode tube listed by Raytheon for radiosonde service. Directly heated subminiature pentode intended for radiosonde service.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

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

5A - 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
0.0025 S

Directly heated subminiature pentode intended for radiosonde service.

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

    90 V

    Radiosonde

  • Control-grid voltage

    0 V

    Radiosonde

  • Screen voltage

    90 V

    Radiosonde

  • Plate current

    3.5 mA

    Radiosonde

  • Screen current

    1 mA

    Radiosonde