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Voltage Pentode - Remote Cutoff (single) ·Pentode

3KT6

Semi-remote-cutoff frame-grid pentode designed for television IF amplification around 40 MHz. Frame-grid construction provides high transconductance while the controlled cutoff characteristic supports automatic gain regulation.

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

Description

Semiremote-cutoff frame-grid pentode used as an IF-amplifier tube in television receivers around 40 MHz.

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

9PM - 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
160000 Ω
Transconductance
0.018 S
Max plate voltage
330 V
Max screen voltage
330 V
Max plate dissipation
3.1 W
Max screen dissipation
0.6 W

Semi-remote-cutoff frame-grid IF pentode ratings and characteristics.

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

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • For fixed-bias operation 0.5

    0.5 MΩ

    Published in approved 6KT6 target datasheet entry; Section1

  • For cathode-bias operation 1

    1 MΩ

    Published in approved 6KT6 target datasheet entry; Section1

  • quency in the order of

    40 MHz

    Published in approved 6KT6 target datasheet entry; Section1

  • Heater Warm-up Time (Average) 11

    11 seconds

    Published in approved 6KT6 target datasheet entry; Section1

  • Plate Voltage

    330 V

    Published in approved 6KT6 target datasheet entry; Section1

  • Grid-No.3 (Suppressor-Grid) Voltage

    0 V

    Published in approved 6KT6 target datasheet entry; Section1

  • Grid-No.2 (Screen-Grid) Supply Voltage

    330 V

    Published in approved 6KT6 target datasheet entry; Section1

  • Grid-No.l (Control-Grid) Voltage

    0 V

    Published in approved 6KT6 target datasheet entry; Section1

  • Plate Dissipation

    3.1 W

    Published in approved 6KT6 target datasheet entry; Section1

  • For grid-No.2 voltages up to

    165 V

    Published in approved 6KT6 target datasheet entry; Section1

  • For grid-No.2 voltages up to 165 volts

    0.6 W

    Published in approved 6KT6 target datasheet entry; Section1

  • For grid-No.2 voltages between 165 and

    330 V

    Published in approved 6KT6 target datasheet entry; Section1

  • Plate Voltage 330

    330 V

    Published in approved 6KT6 target datasheet entry; Section1

Capacitance

  • Internal Shield

    9.5 pF

    Published in approved 6KT6 target datasheet entry; Section1

  • Grid to Plate 3

    3 pF

    Published in approved 6KT6 target datasheet entry; Section1

  • Pentode Unit, and Internal Shield 3.2

    3.2 pF

    Published in approved 6KT6 target datasheet entry; Section1

  • Peniode Unit, and Internal Shield 1.6

    2.4 pF

    Published in approved 6KT6 target datasheet entry; Section1

  • Grid No.3, and Internal Shield 7.5

    7.5 pF

    Published in approved 6KT6 target datasheet entry; Section1

  • Grid No.3, and Internal Shield 2.2

    2.8 pF

    Published in approved 6KT6 target datasheet entry; Section1

Characteristic

  • Plate Supply Voltage 125

    170 V

    Published in approved 6KT6 target datasheet entry; Section1

  • Grid-No.3 Voltage 0

    0 V

    Published in approved 6KT6 target datasheet entry; Section1

  • Grid-No.2 Supply Voltage 125

    170 V

    Published in approved 6KT6 target datasheet entry; Section1

  • Cathode-Bias Resistor 56

    56 Ω

    Published in approved 6KT6 target datasheet entry; Section1

  • Plate Current

    17 mA

    Published in approved 6KT6 target datasheet entry; Section1

  • of 10 jurahos —

    22 V

    Published in approved 6KT6 target datasheet entry; Section1