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Power - Pentode (NOT beam) ·Pentode

6AK7

High-transconductance power pentode capable of approximately 3 W Class A audio output.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
8Y
Socket code
IO
Base pins
8
Nominal heater
6.3 V / 650 mA

Description

6AK7 is listed in the supplied receiving-tube handbook as a power-amplifier pentode. The published heater rating is 6.3 V at 0.65 A. Maximum ratings and representative operating characteristics were transcribed from the supplied table.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
8Y
Socket code
IO
Base pins
8
Nominal heater voltage
6.3 V
Nominal heater current
650 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

8Y - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1G3AG3 — Suppressor GridGroup 8Y1

EIA transcription; confirmation pending

Unverified

EIA Base Connections, printed page 129, 8Y

PIN1SHASH — Internal ShieldGroup 8Y1

EIA transcription; confirmation pending

Unverified

EIA Base Connections, printed page 129, 8Y

PIN2H—H — Heater

EIA transcription; confirmation pending

Unverified

EIA Base Connections, printed page 129, 8Y

PIN4G1AG1 — Control Grid

EIA transcription; confirmation pending

Unverified

EIA Base Connections, printed page 129, 8Y

PIN5KAK — Cathode

EIA transcription; confirmation pending

Unverified

EIA Base Connections, printed page 129, 8Y

PIN6G2AG2 — Screen Grid

EIA transcription; confirmation pending

Unverified

EIA Base Connections, printed page 129, 8Y

PIN7H—H — Heater

EIA transcription; confirmation pending

Unverified

EIA Base Connections, printed page 129, 8Y

PIN8PAP — Plate (Anode)

EIA transcription; confirmation pending

Unverified

EIA Base Connections, printed page 129, 8Y

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
130000 Ω
Transconductance
0.011 S
Max plate voltage
300 V
Max screen voltage
300 V

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

Pentode

Other

  • Maximum plate voltage

    300 V

    Published handbook rating

  • Maximum screen voltage

    300 V

    Published handbook rating

  • Plate voltage

    300 V

    ClassA

  • Screen voltage

    150 V

    ClassA

  • Control-grid bias

    3 V

    ClassA

  • Plate current

    30 mA

    ClassA

  • Screen current

    7 mA

    ClassA

  • Load resistance

    10000 ohm

    ClassA

  • Power output

    3 W

    ClassA

Characteristic

  • Plate resistance

    130000 ohm

    Published handbook characteristic

  • Transconductance

    11000 µS

    Published handbook characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    650 mA

    Published heater rating

Capacitance

  • Input capacitance

    13 pF

    Published capacitance column

  • Output capacitance

    7.5 pF

    Published capacitance column