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Voltage Pentode - Sharp Cutoff (single) ·Pentode

6AU6WA

Ruggedized 6AU6-family sharp-cutoff RF pentode for mobile, aeronautical, industrial, and vibration-prone equipment.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
7BK
Socket code
B7G
Base pins
7
Nominal heater
6.3 V / 300 mA

Description

Ruggedized 6AU6-family fixed-slope pentode designed to withstand shock and vibration in mobile, aeronautical, and industrial equipment.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

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

7BK - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1G1AG1 — Control Grid

EIA chart transcription; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BK

PIN2G3AG3 — Suppressor GridGroup 7BK2

EIA chart transcription; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BK

PIN2ISAIS — Internal ScreenGroup 7BK2

EIA chart transcription; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BK

PIN3H—H — Heater

EIA chart transcription; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BK

PIN4H—H — Heater

EIA chart transcription; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BK

PIN5PAP — Plate (Anode)

EIA chart transcription; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BK

PIN6G2AG2 — Screen Grid

EIA chart transcription; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BK

PIN7KAK — Cathode

EIA chart transcription; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BK

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
1000000 Ω
Transconductance
0.0052 S
Max plate voltage
330 V
Max screen voltage
165 V
Max plate dissipation
3.3 W
Max screen dissipation
0.7 W

Promoted from 250 V / 150 V Class A operating condition.

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

1958 Compagnie General

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

  • Heater Voltage

    6.3 V

  • Heater Current

    300 mA

  • Transconductance

    5200 uS

    PlateVoltage=250V; ScreenVoltage=150V

  • Plate Resistance

    1000000 ohm

    PlateVoltage=250V; ScreenVoltage=150V

  • Plate Current

    10.6 mA

    PlateVoltage=250V; ScreenVoltage=150V

  • Screen Current

    4.3 mA

    PlateVoltage=250V; ScreenVoltage=150V

  • Grid-to-Plate Capacitance

    0.0035 pF

  • Input Capacitance

    6 pF

  • Output Capacitance

    4.9 pF

Other

  • Plate Voltage

    250 V

    ClassA

  • Screen Voltage

    150 V

    ClassA

Data set 02

1960 RCA Industrial and Communications Types

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

  • Heater Voltage

    6.3 V

Data set 03

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Heater voltage

    6.3 V

  • Heater current

    300 mA

  • Maximum shock

    450 G/1msec

  • Maximum altitude

    10000 ft

Capacitance

  • Grid 1 to plate maximum

    0.035 pF

Data set 04

1968 Mazda Belvu

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • 'TEnSion filAment ………cerasrosrsrrenneesemescesseoscussoosecnuces VÊ

    6.3 V

  • Heater current … If

    300 mA

  • AMmpoule

    1 A

  • s4 vovoos vavovasesesnsecapeessrensacses VI

    6.9 V

  • 000s V

    330 V

  • Tension d' allmentat10n de gr111€ n°2 Vâ;N

    330 V

  • Tension de grill® n°2 es saccensarceameencecsscenmensersesesses VZ

    165 V

  • T'ension positive de grille n°o1 .… … VE;

    0 V

  • se s006 c0nmos cncses sesesseuse s0 00eesee PB

    3.3 W

  • se eroconsessenseccunnceceenvesese es P'82

    0.7 W

  • Tension entre le filamentetla cathode vorsssesceseseseessoc0so0ese VÊK

    100 V

  • Tempétature de l'ampoule au point le plus chaud

    165 ° C

  • Tension d'ANOdE .…..….….…cresesesavessescen ccveossesseosererss VA 100 250

    250 V

  • Tension de grille n°2 _ …ecevecrsermencecscocesccrcenes VE2 100 125

    150 V

  • srrr 1E 5,0 7,6

    10.6 mA

  • Courant de grille n°2 _…eecerescrosvercasssencencesess 1B3 2,1 3,0

    4.3 mA

  • PEntE …….……seressesseseeensesoce ssoss0005 .S 3,9 45

    52 mA/V

  • Plate resistance (env1ron) arancomsesmescarvaserecese O 0,5 1,5

    1 MΩ

  • mesurée pour Vs =

    2 Veff

  • R&:

    100 kΩ

  • Rk 1,7 1,8 4

    3.8 kΩ

  • Rg 400 500 900

    1100 kΩ

  • vs 25 31 23

    25 veff

  • Ra 100 240

    510 kΩ

  • vs 47 60 44 53 38

    44 Veff

  • Plate voltage …… … Va

    250 V

  • Résistance de CathOdE ……..…..….….……eessersivrovscrennsecéremesvensecouseses RE

    330 Ω

  • Courant d'’AnOde@.…..…….….…...éuesssnassisencsensanssen

    12.2 mA

  • Transconductance

    4.8 mA/V

Characteristic

  • Capacitance d'EntréE ……s … Ce

    6 pF

    InterelectrodeCapacitance

  • Capacitance de@ SOItI® …….…ucremcrssenseensmenceer Cs

    4.9 pF

    InterelectrodeCapacitance