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Power - Beam (NOT sweep) ·BeamPower

6AQ5

Miniature beam-power output tube designed for audio-frequency output-amplifier service in radio and other consumer electronic equipment.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
7BZ
Socket code
B7G
Base pins
7
Nominal heater
6.3 V / 450 mA

Description

Indirectly heated power output tube intended for AF output-amplifier service.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
7BZ
Socket code
B7G
Base pins
7
Nominal heater voltage
6.3 V
Nominal heater current
450 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

7BZ - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1Pin 1AG1 — Control GridVerified

Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout

PIN2Pin 2AG3 — Suppressor GridGroup BZ2Verified

Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout

PIN2Pin 2AK — CathodeGroup BZ2Verified

Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout

PIN3Pin 3—H — HeaterVerified

Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout

PIN4Pin 4—H — HeaterVerified

Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout

PIN5Pin 5AP — Plate (Anode)Verified

Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout

PIN6Pin 6AG2 — Screen GridVerified

Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout

PIN7Pin 7AG1 — Control GridVerified

Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout

Section ratings

1 physical section, each with unique specifications.

Section 1

Beam Power

X-ray radiationInterelectrode capacitances
Plate resistance
52000 Ω
Transconductance
0.0041 S
Max plate voltage
250 V
Max screen voltage
250 V
Max plate dissipation
12 W
Max screen dissipation
2 W
Max cathode current
35 mA
Rectifier max heater-cathode voltage
200 V

Promoted from published ratings/characteristics; identical repeated sections compressed where applicable.

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

Beam Power

Characteristic

  • Transconductance

    4900 µS

Other

  • Maximum Plate Voltage

    250 V

  • Maximum Screen Voltage

    250 V

  • Maximum Plate Dissipation

    12 W

  • Maximum Screen Dissipation

    2.5 W

  • Application

    Audio power amplifier

Data set 02

1955 Marconi

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Heater voltage

    6.3 V

  • Heater current

    450 mA

  • Maximum plate voltage

    250 V

  • Maximum screen voltage

    250 V

  • Maximum plate dissipation

    12 W

  • Maximum screen dissipation

    2 W

  • Triode-connected dissipation

    14 W

    TriodeConnection

Application

  • Primary application

    Beam output tetrode equivalent to 6AQ5 for audio power service.

Data set 03

1958 Brimar Radio Valve No 7

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Plate Voltage

    250 V

  • Plate Current

    45 mA

  • Screen Voltage

    250 V

  • Screen Current

    4.5 mA

  • Power Output

    4.5 W

    ClassA

Characteristic

  • Plate Resistance

    58000 ohm

  • Transconductance

    4100 µS

Data set 04

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Maximum plate voltage

    250 V

    Published handbook rating

  • Maximum screen voltage

    250 V

    Published handbook rating

  • Plate voltage

    250 V

    ClassA

  • Screen voltage

    250 V

    ClassA

  • Control-grid bias

    12.5 V

    ClassA

  • Plate current

    45 mA

    ClassA

  • Screen current

    4.5 mA

    ClassA

  • Load resistance

    5000 ohm

    ClassA

  • Power output

    4.5 W

    ClassA

  • Maximum positive pulse plate voltage

    1100 V

    VerticalDeflection TriodeConnection

  • Maximum plate dissipation

    9 W

    VerticalDeflection TriodeConnection

  • Maximum DC cathode current

    35 mA

    VerticalDeflection TriodeConnection

Characteristic

  • Plate resistance

    52000 ohm

    Published handbook characteristic

  • Transconductance

    4100 µS

    Published handbook characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    450 mA

    Published heater rating

Data set 05

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • MaximumPeakPositivePlateVoltage

    1100 V

  • Maximum Signal Power Output

    4.5 W

    ClassA;PlateVoltage=250V

Data set 06

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Capacitance

  • Grid-to-plate capacitance

    0.4 pF

  • Input capacitance

    8 pF

  • Output capacitance

    8.5 pF

Other

  • Class-A plate voltage

    180 V

    ClassA

  • Class-A screen voltage

    180 V

    ClassA

  • Class-A grid voltage

    -8.5 V

    ClassA

  • Class-A zero-signal plate current

    29 mA

    ClassA

  • Class-A max-signal plate current

    30 mA

    ClassA

  • Class-A screen current zero signal

    3 mA

    ClassA

  • Class-A screen current max signal

    4 mA

    ClassA

  • Class-A load resistance

    5500 ohm

    ClassA

  • Class-A output power

    2 W

    ClassA

  • Class-A THD

    8 %

    ClassA

  • Alternate Class-A plate voltage

    250 V

    ClassA

  • Alternate Class-A output power

    4.5 W

    ClassA

  • Class-AB push-pull plate voltage

    250 V

    ClassAB,PushPull

  • Class-AB push-pull plate-to-plate load

    10000 ohm

    ClassAB,PushPull

Data set 07

1965 Westinghouse Data Book

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristic

  • HeaterOrFilamentVoltage

    6.3 V

  • HeaterOrFilamentCurrent

    450 mA

  • Transconductance

    4100 uS

  • Input Capacitance

    8.5 pF

  • Output Capacitance

    8.5 pF

Other

  • Plate Voltage

    250 V

    ClassA

  • Screen Voltage

    250 V

    ClassA

  • Plate Current

    45 mA

    ClassA

  • Screen Current

    4.5 mA

    ClassA

  • Load Resistance

    5000 ohm

    ClassA

  • Power Output

    4.5 W

    ClassA

  • PushPullPowerOutput

    14 W

    TwoTubes;PushPull;ClassAB

  • Grid Voltage

    -12.5 V

    ClassA

Data set 08

1966 Tung Sol Electronic Tubes 1 of 4

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristic

  • Heater voltage

    6.3 V

    Published table

  • Heater current

    450 mA

    Published table

  • Plate resistance

    52000 ohm

    Published table

  • Transconductance

    4200 µS

    Published table

Other

  • Plate voltage

    250 V

    ClassA

  • Screen voltage

    250 V

    ClassA

  • Zero-signal plate current

    45 mA

    ClassA

  • Maximum-signal screen current

    7 mA

    ClassA

  • Vertical-deflection maximum peak plate voltage

    1100 V

    VerticalDeflection

  • Maximum average cathode current

    40 mA

    VerticalDeflection

  • Maximum peak cathode current

    115 mA

    VerticalDeflection

Data set 09

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Peak Positive Pulse Plate Voltage

    1100 V

    TriodeConnection;VerticalDeflection

Data set 10

1968 Mazda Belvu

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • ËELVU Amplificateur de sortie A.F

    6 A

  • Tension filAment ….………uesemeennnennennnnsnnnnnennn V

    6.3 V

  • Heater current

    450 mA

  • Plate voltage ………..…..…....….+…scorsrernsoncene V

    250 V

  • Tension de grille n°2.........…..….….….…-0cecccceceees VEZ

    250 V

  • Plate dissipation ……s Pä

    12 W

  • Dissipation de grille n°2 ...c PE

    2 W

  • Tension entre filament et cathode …… Vfk

    90 V

  • Tension d'Anod@ …… reseroonceseverereensecces VA 180

    250 V

  • Screen-grid voltage............………usccécsrerecereseuss VEZ 180

    250 V

  • Tension de grille n° 1…c VEI -8,5

    -12.5 V

  • Tension de crête d'entrée …… Ve CI 8,5

    12.5 V

Characteristic

  • Capacitance de sortie …… … Cs

    6 pF

    InterelectrodeCapacitance

  • Capacitance grille n° 1/ anode Cg,/a ;

    0.35 pF

    InterelectrodeCapacitance

  • Capacitance d'Entrée …….…...………neerrsernsenceensenitareneennssesenes Ce

    8 pF

    InterelectrodeCapacitance

  • Capacitance de sortie …… . .… Cs

    11 pF

    InterelectrodeCapacitance

  • Capacitance grille n°1 /anode ............................................ Cg,/a

    0.17 pF

    InterelectrodeCapacitance

Data set 11

1969 Tesla Manual of Electronic Tubes

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Power Output

    4.5 W

    ClassA;OneTube

  • Power Output

    10 W

    ClassAB;PushPull;TwoTubes