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Power - Pentode (NOT beam) ·Pentode

CK533AX

Directly heated subminiature pentode for low-power output amplification in portable battery equipment.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
5J
Socket code
-
Base pins
5
Nominal heater
1.25 V / 15 mA

Description

Directly heated subminiature pentode for low-power output-amplifier service in portable equipment.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

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

5J - 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
Plate resistance
500000 Ω
Transconductance
0.00045 S
Max plate voltage
45 V
Max screen voltage
45 V
Max cathode current
0.65 mA

Published values are typical summary-table operating/characteristic data, not maximum ratings.

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

Pentode

Other

  • HeaterVoltageNominal

    1.25 V

    Nominal

  • HeaterCurrentNominal

    15 mA

    Nominal

  • Maximum Plate Voltage

    45 V

  • Maximum Screen Voltage

    45 V

  • Maximum Cathode Current

    0.65 mA

Characteristic

  • Transconductance

    450 µS

    Typical

  • Plate Resistance

    500000 ohm

    Typical

Data set 02

195X Raytheon Special Purpose Tubes

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Plate Voltage

    22.5 V

    Typical operating point; Power Amp.

  • Grid 1 Voltage

    0 V

    Typical operating point; Power Amp.

  • Grid 2 Voltage

    22.5 V

    Typical operating point; Power Amp.

  • Plate Current

    0.36 mA

    Typical operating point; Power Amp.

  • Grid 2 Current

    0.09 mA

    Typical operating point; Power Amp.

  • Output Power

    1.8 mW

    Typical operating point; Power Amp.

  • Load Resistance

    0.075 MOhm

    Typical operating point; Power Amp.

  • Maximum Length

    1.5 in

    Maximum dimension

  • Maximum Width

    0.385 in

    Maximum dimension

  • Maximum Thickness

    0.285 in

    Maximum dimension