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Voltage Pentode ·Pentode

6AC7K

Extended-life high-transconductance RF pentode developed for broadband amplifier input stages and continuous professional service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
IO
Base pins
8
Nominal heater
6.3 V / 450 mA

Description

A high-transconductance RF pentode of extended-life construction for input stages in broadband amplifiers.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
IO
Base pins
8
Nominal heater voltage
6.3 V
Nominal heater current
450 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
300000 Ω
Transconductance
0.009 S
Max plate voltage
330 V
Max screen voltage
165 V
Max plate dissipation
3.3 W
Max screen dissipation
0.45 W
Max cathode current
40 mA

Extended-life high-transconductance RF pentode.

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

1953 RFT Rundfunk Technik

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • HeaterVoltageNominal

    6.3 V

    Nominal

  • HeaterCurrentNominal

    450 mA

    Nominal

  • Maximum Plate Voltage

    330 V

  • Maximum Screen Voltage

    165 V

  • Maximum Plate Dissipation

    3.3 W

  • Maximum Screen Dissipation

    0.45 W

  • Maximum Cathode Current

    40 mA

Characteristic

  • Transconductance

    9000 µS

    Typical

  • Plate Resistance

    300000 ohm

    Typical