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6CS6

Sharp-cutoff dual-control heptode designed for television gated-amplifier and synchronization service, particularly combined sync separation and clipping.

Directly heatedCold cathodeCommon cathodeDissimilar

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

Description

Pentagrid gated-amplifier tube used as a combined sync separator and sync clipper in television receivers.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 7CH
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

7CH - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1G1	A	G1 — Control Grid Chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7CH
PIN2G5	A	G5 — Fifth GridGroup 7CH2 Chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7CH
PIN2K	A	K — CathodeGroup 7CH2 Chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7CH
PIN3H	—	H — Heater Chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7CH
PIN4H	—	H — Heater Chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7CH
PIN5P	A	P — Plate (Anode) Chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7CH
PIN6G2	A	G2 — Screen GridGroup 7CH6 Chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7CH
PIN6G4	A	G4 — Fourth GridGroup 7CH6 Chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7CH
PIN7G3	A	G3 — Suppressor Grid Chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7CH

Section ratings

1 physical section, each with unique specifications.

Section 1

Heptode

X-ray radiationInterelectrode capacitances

Plate resistance: 1000000 Ω
Transconductance: 0.0011 S
Max plate voltage: 300 V
Max screen voltage: 100 V
Max plate dissipation: 1 W
Max screen dissipation: 1 W
Max cathode current: 14 mA

Grid-1 transconductance promoted; grid-3 transconductance retained as parameter.

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

Heptode

Other

Plate voltage
100 V
GatedAmplifier;ControlGrid3Zero
Screen-grid voltage
30 V
GatedAmplifier;ControlGrid3Zero
Grid voltage
-1 V
GatedAmplifier;ControlGrid3Zero
Plate current
1 mA
GatedAmplifier;ControlGrid3Zero
Screen-grid current
1.3 mA
GatedAmplifier;ControlGrid3Zero
Plate voltage
100 V
GatedAmplifier;ControlGrid3Minus1V
Screen-grid voltage
30 V
GatedAmplifier;ControlGrid3Minus1V
Grid voltage
0 V
GatedAmplifier;ControlGrid3Minus1V
Plate current
0.8 mA
GatedAmplifier;ControlGrid3Minus1V
Screen-grid current
5.5 mA
GatedAmplifier;ControlGrid3Minus1V
Plate voltage
10 V
GatedAmplifier;LowPlateVoltage
Screen-grid voltage
30 V
GatedAmplifier;LowPlateVoltage
Grid voltage
0 V
GatedAmplifier;LowPlateVoltage
Plate current
2 mA
GatedAmplifier;LowPlateVoltage
Screen-grid current
4.5 mA
GatedAmplifier;LowPlateVoltage

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Heptode

Other

Maximum Cathode Current
14 mA

Data set 03

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Heptode

Other

Plate voltage
100 V
Grid3=-1V
Screen-grid voltage
30 V
Grid 1 voltage
0 V
Grid 3 voltage
-1 V
Plate current
0.8 mA
Screen-grid current
5.5 mA

Characteristics

Grid 1 transconductance
1100 uS
Grid 3 transconductance
1500 uS
Plate resistance
1000000 Ohm

Capacitance

Grid 1 to plate capacitance
0.07 pF
Grid 3 to plate capacitance
0.36 pF
Grid 1 input capacitance
5.5 pF
Grid 3 input capacitance
7 pF

Data set 04

1965 Westinghouse Data Book

Published operating points and test conditions from this source.

SECTION 1

Heptode

Characteristics

Heater Voltage
6.3 V
Heater Current
300 mA
Transconductance
1500 uS
RepresentativePublishedPoint
Plate Resistance
1000000 ohm
RepresentativePublishedPoint

Other

Maximum Plate Voltage
300 V
Maximum Plate Dissipation
1 W

Data set 05

1966 Tung Sol Electronic Tubes 2 of 4

Published operating points and test conditions from this source.

SECTION 1

Heptode

Other

Maximum cathode current
14 mA
Plate voltage
100 V
ClassA
Grid 2 and 4 voltage
30 V
ClassA

Characteristic

Plate current
0.8 mA
ClassA
Transconductance, grid 3 to plate
1500 uS
ClassA
Plate resistance
0.7 Mohm
ClassA
Transconductance, grid 1 to plate
200 uS
ClassA

Capacitance

Grid-1-to-plate capacitance
0.04 pF
Grid-3-to-plate capacitance
0.3 pF
Grid-1-to-grid-3 coupling capacitance maximum
0.22 pF

Data set 06

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Heptode

Other

HeaterVoltageNominal
6.3 V
HeaterCurrentNominal
300 mA

Characteristic

Plate Resistance
1000000 Ohm
Transconductance
1100 uS
Grid3 Transconductance
1500 uS
Grid3Control
Grid1Transconductance
1100 uS
Grid1Control

Data set 07

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Heptode

Characteristics

Voltage
6.3 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Current
300 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid No.l to cathode 8 grid No.5,
8
Published datasheet value; multiple values represent separate source-table limits or conditions.
No.3, and heater
5.5
Published datasheet value; multiple values represent separate source-table limits or conditions.
No.1, and heater
7
Published datasheet value; multiple values represent separate source-table limits or conditions.
No.3, grid No.1, and heater
7.5
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate Voltage — published value 1
100 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate Voltage — published value 2
100 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid-No.2 & Grid-No.4 Voltage — published value 1
30 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid-No.2 & Grid-No.4 Voltage — published value 2
30 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid-No.3 Voltage — published value 1
-1 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid-No.3 Voltage — published value 2
0 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid-No.1 Voltage — published value 1
0 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid-No.1 Voltage — published value 2
-1 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate Resistance (Approx.) — published value 1
0 Mohm
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate Resistance (Approx.) — published value 2
1 Mohm
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid-No.3-to-Plate Transconductance 1500
1500
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid-No.l-to-Plate Transconductance
1100
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate Current — published value 1
0.8 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate Current — published value 2
1 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid-No.2 d Grid-No.4 Current — published value 1
5.5 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid-No.2 d Grid-No.4 Current — published value 2
1.3 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
plate current of 50 µamp — published value 1
50 V
Published datasheet value; multiple values represent separate source-table limits or conditions.

Other

Grid No.l to plate
0.07 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid No.3 to plate
0.36 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid No.l to grid No.3
0.22 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.

Data set 08

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Heptode

Other

Heater Voltage (ac/dc) 3.15 4.2 6.3
12.6 V
Published in approved 12CS6 target entry; Section1
Heater Current 0.6 0.45 0.3
150 mA
Published in approved 12CS6 target entry; Section1
Heater Warm-up Time (Average) 11 11
11 seconds
Published in approved 12CS6 target entry; Section1
Grid-No.3-to-Plate Transconductance
1500 µS
Published in approved 12CS6 target entry; Section1
Grid-No.l-to-PIate Transconductance
1100 µS
Published in approved 12CS6 target entry; Section1
Plate Current 0.8
1 mA
Published in approved 12CS6 target entry; Section1
Grids-No.2-and-No.-4 Current 5.5
1.3 mA
Published in approved 12CS6 target entry; Section1
50 iiA
2.2 V
Published in approved 12CS6 target entry; Section1
50 /l A —
-2.6 V
Published in approved 12CS6 target entry; Section1
Plate Voltage
300 V
Published in approved 12CS6 target entry; Section1
Grids-No.2-and-No.4 Supply Voltage
300 V
Published in approved 12CS6 target entry; Section1
Cathode Current
14 mA
Published in approved 12CS6 target entry; Section1
Plate Dissipation
1 W
Published in approved 12CS6 target entry; Section1
For grids-No. 2-and-No.4 voltages up to
150 V
Published in approved 12CS6 target entry; Section1
For grids-No. 2-and-No.4 voltages up to 150 volts
1 W
Published in approved 12CS6 target entry; Section1
For grids-No.2-and-No.4 voltages between 150 and
300 V
Published in approved 12CS6 target entry; Section1
Grid-No.l-Circuit Resistance
0.47 MΩ
Published in approved 12CS6 target entry; Section1
Grid-No. 3-Circuit Resistance
2.2 MΩ
Published in approved 12CS6 target entry; Section1

Capacitance

Grid No.4, and Grid No.5
5.5 pF
Published in approved 12CS6 target entry; Section1
Grid No.4, and Grid No.5
7 pF
Published in approved 12CS6 target entry; Section1
Grid No.4, and Grid No.5
7.5 pF
Published in approved 12CS6 target entry; Section1

Characteristic

Plate Voltage 100
100 V
Published in approved 12CS6 target entry; Section1
Plate Resistance (Approx.) 0.7
1 MΩ
Published in approved 12CS6 target entry; Section1