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Voltage - Triode (single high frequency) ·Triode

6AK4

High-frequency triode for UHF/VHF amplification, mixing, or oscillator service in television, FM, communications, or specialized RF equipment.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
8DK
Socket code
B8D
Base pins
8
Nominal heater
6.3 V / 150 mA

Description

Subminiature medium-mu UHF triode for general-purpose high-frequency service.

Socket description

Subminiature 8-lead

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
8DK
Socket code
B8D
Base pins
8
Nominal heater voltage
6.3 V
Nominal heater current
150 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

8DK - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1G1AG1 — Control Grid

EIA source transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 8DK

PIN3H—H — Heater

EIA source transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 8DK

PIN5KAK — Cathode

EIA source transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 8DK

PIN6H—H — Heater

EIA source transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 8DK

PIN8PAP — Plate (Anode)

EIA source transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 8DK

Section ratings

1 physical section, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
5300 Ω
Transconductance
0.0038 S
Amplification factor
20
Max plate voltage
250 V
Max plate dissipation
3 W

Published maximum ratings, representative operating characteristics, and capacitance columns reviewed.

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 General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Maximum plate voltage

    250 V

    Published handbook rating

  • Plate voltage

    200 V

    ClassA

  • Plate current

    9.5 mA

    ClassA

Characteristic

  • Plate resistance

    5300 ohm

    Published handbook characteristic

  • Transconductance

    3800 µS

    Published handbook characteristic

  • Amplification factor

    20

    Published handbook characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    150 mA

    Published heater rating

Capacitance

  • Input capacitance

    2.2 pF

    Published capacitance column

  • Output capacitance

    2.2 pF

    Published capacitance column

  • Grid-to-plate capacitance

    1.3 pF

    Published capacitance column