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Voltage Pentode - Remote Cutoff (single) ·Pentode

6BA6

Remote- or semi-remote-cutoff pentode designed for RF, IF, variable-mu, or controlled-gain amplifier service.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 7CC
Socket code: B7G
Base pins: 7
Nominal heater: 6.3 V / 300 mA

Description

Indirectly heated variable-slope pentode intended for RF or IF amplification.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 7CC
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

7CC - 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: 1000000 Ω
Transconductance: 0.0044 S
Max plate voltage: 300 V
Max screen voltage: 125 V
Max plate dissipation: 3 W
Max screen dissipation: 0.6 W
Max cathode current: 25 mA

Published ratings and characteristics promoted from approved datasheet.

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

Pentode

Characteristic

Plate Resistance
1000000 ohm
Transconductance
4400 µS

Other

Maximum Plate Voltage
330 V
Maximum Screen Voltage
330 V
Maximum Plate Dissipation
3.3 W
Maximum Screen Dissipation
0.65 W

Data set 02

1955 Marconi

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

Heater/Filament Voltage
6.3 V
Heater/Filament Current
300 mA
Transconductance
4400 uS
Plate Resistance
1500000 ohm

Other

Maximum/Published Anode Voltage
300 V
Maximum/Published Screen Voltage
125 V
Maximum Anode Dissipation
3 W
Maximum Screen Dissipation
0.6 W

Capacitance

Grid-Anode Capacitance
0.0035 pF

Data set 03

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Plate voltage
250 V
ClassA
Screen-grid voltage
100 V
ClassA
Cathode resistor
68 ohm
ClassA
Plate current
11 mA
ClassA
Screen-grid current
4.2 mA
ClassA
Plate voltage
100 V
ClassA
Screen-grid voltage
100 V
ClassA
Cathode resistor
68 ohm
ClassA
Plate current
10.8 mA
ClassA

Data set 04

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 05

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
Plate current
10.8 mA
Typical operating conditions

Data set 06

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Plate voltage
250 V
Published table
Screen voltage
100 V
Published table
Control-grid bias
-1 V
Published table
Plate current
11 mA
Published table
Screen current
4.2 mA
Published table

Characteristic

Transconductance
4400 µS
Published table
Plate resistance
1000000 ohm
Published table
Heater voltage
6.3 V
Published heater rating
Heater current
300 mA
Published heater rating

Data set 07

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

Heater voltage
6.3 V
Heater current
300 mA
Plate resistance
1 MOhm

Other

Maximum plate voltage
330 V
Maximum screen supply voltage
330 V
Maximum plate dissipation
3.4 W
Maximum screen dissipation
0.6 W
Typical plate voltage
250 V
Typical screen voltage
100 V

Data set 08

1966 Tung Sol Electronic Tubes 1 of 4

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Plate voltage
250 V
RFIFAmplifier
Screen voltage
100 V
RFIFAmplifier
Plate current
10 mA
RFIFAmplifier
Screen current
4 mA
RFIFAmplifier
Application
Remote-cutoff RF/IF amplifier
Section1

Characteristic

Plate resistance
1000000 Ω
Section1
Transconductance
4400 µS
Section1

Data set 09

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Screen Supply Voltage
300 V
Plate Voltage
100 V
ClassA; PlateVoltage=100V; ScreenVoltage=100V
Screen Voltage
100 V
ClassA; PlateVoltage=100V; ScreenVoltage=100V
Cathode Bias Resistance
68 ohm
ClassA; PlateVoltage=100V; ScreenVoltage=100V
Plate Voltage
250 V
ClassA; PlateVoltage=250V; ScreenVoltage=100V
Screen Voltage
100 V
ClassA; PlateVoltage=250V; ScreenVoltage=100V

Characteristic

Plate Resistance
250000 ohm
ClassA; PlateVoltage=100V; ScreenVoltage=100V
Transconductance
4300 uS
ClassA; PlateVoltage=100V; ScreenVoltage=100V
Plate Current
10.8 mA
ClassA; PlateVoltage=100V; ScreenVoltage=100V
Screen Current
4.4 mA
ClassA; PlateVoltage=100V; ScreenVoltage=100V

Data set 10

1968 Mazda Belvu

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Tension filAMent ….…cceurecrearssoceresnancomssncacececacecocess VÉ
6.3 V
Heater current ...s seessencensereneseress IË
300 mA
TenSion d'ANOËE….………rrevereeesereirr vovrorcamreranséssencecsce0ees VE
300 V
sésmsoce sucocacsensssa 00000s VB
125 V
Screen-grid voltage à courant nu1 asssssos0c0s000u VGa DI
300 V
Dissipation d'Anod@ …..….….vsesereersocserensencrmcecesescuess PA
3 W

Characteristic

Capacitance d'entrée …… … Ce
5.5 pF
InterelectrodeCapacitance
Capacitance de sortie .… avssesnensesscamsencasasasecermaenceusss OS
5 pF
InterelectrodeCapacitance
Capacitance grille n° 1/anode vouene cacvse vocacarassensvencn es CE1/@
3.5 pF
InterelectrodeCapacitance

Data set 11

1969 Tesla Manual of Electronic Tubes

Published operating points and test conditions from this source.

SECTION 1

Pentode

Application

Application
RF_IF_Amplifier text

Data set 12

1971 RCA HB3 Binder 3 of 7

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Heater voltage
6.3 V
Nominal
Heater current
300 mA
Nominal
Maximum plate voltage
330 V
Promoted published value
Maximum screen voltage
330 V
Promoted published value
Maximum plate dissipation
3.3 W
Promoted published value
Maximum screen dissipation
0.65 W
Promoted published value

Characteristic

Plate resistance
1000000 ohm
Promoted published value
Transconductance
4400 uS
Promoted published value
Voltage
20 V

Data set 13

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Yo}tage (AC or DC) ± %
3 V
PublishedColumn1
Yo}tage (AC or DC) ± %
10 V
PublishedColumn2
Current at
6.3 V

Capacitance

Grid No.l to plate. max. max
0.0035 pF
PublishedColumn1
and heater
5.5 pF
PublishedColumn1
grid No. , and heater
5 pF
PublishedColumn1
grid No. , and heater
5.5 pF
PublishedColumn2

Characteristics

Plate Supply Voltage
100 V
PublishedColumn1
Plate Supply Voltage
250 V
PublishedColumn2

Data set 14

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

For fixed-bias operation
0.25 MΩ
Published in approved EF93 target datasheet entry; Section1
For cathode-bias operation
1 MΩ
Published in approved EF93 target datasheet entry; Section1
Plate Current
5 mA
Published in approved EF93 target datasheet entry; Section1
Plate Voltage
330 V
Published in approved EF93 target datasheet entry; Section1

Characteristic

Tube Voltage Drop for plate current of
20 mA
Published in approved EF93 target datasheet entry; Section1
Tube Voltage Drop for plate current of 20 mA
5 V
Published in approved EF93 target datasheet entry; Section1

Capacitance

Heater Voltage (ac/dc) 6.3
12.6 V
Published in approved EF93 target datasheet entry; Section1
Heater Current 0.3
150 mA
Published in approved EF93 target datasheet entry; Section1
" This value is
5.5 pF
Published in approved EF93 target datasheet entry; Section1