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Voltage Pentode - Sharp Cutoff (single) ·Pentode

4JK6

Sharp-cutoff pentode designed for television IF, picture-IF, video, or VHF tuner amplifier service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B9A
Base pins
9
Nominal heater
3.7 V / 600 mA

Description

4JK6 is an explicitly covered designation on the 6JK6 source sheet. Sharp-cutoff miniature pentode for color-television IF-amplifier service.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B9A
Base pins
9
Nominal heater voltage
3.7 V
Nominal heater current
600 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

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
150000 Ω
Transconductance
0.018 S
Max plate voltage
275 V
Max screen voltage
275 V
Max plate dissipation
2.5 W
Max screen dissipation
0.6 W
Max cathode current
22 mA

Published maximum ratings and characteristics promoted semantically from the approved source.

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

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

  • Plate Resistance

    150000 ohm

  • Transconductance

    18000 µS

Other

  • Maximum Plate Voltage

    275 V

  • Maximum Screen Voltage

    275 V

  • Maximum Plate Dissipation

    2.5 W

  • Maximum Screen Dissipation

    0.6 W

  • Maximum Cathode Current

    22 mA

  • Plate Voltage

    125 V

    ClassA

  • Plate Current

    11.5 mA

    ClassA

  • Screen Current

    3.9 mA

    ClassA