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Voltage Radio Detector Converter ·Heptode

3CS6

Multi-grid heptode for mixer, modulator, and specialized receiver signal-processing applications. Separate control grids provide independent influence over plate current for versatile frequency-conversion and modulation functions.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
7CH
Socket code
B7G
Base pins
7
Nominal heater
3.15 V / 600 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
3.15 V
Nominal heater current
600 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

7CH - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1G1AG1 — Control Grid

Chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CH

PIN2G5AG5 — Fifth GridGroup 7CH2

Chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CH

PIN2KAK — 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

PIN5PAP — Plate (Anode)

Chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CH

PIN6G2AG2 — Screen GridGroup 7CH6

Chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CH

PIN6G4AG4 — Fourth GridGroup 7CH6

Chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CH

PIN7G3AG3 — 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
Rectifier warm-up time
11 s

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;Grid3=0V

  • Screen-grid voltage

    30 V

    GatedAmplifier;Grid3=0V

  • Grid No.1 bias

    1 V

    GatedAmplifier;Grid3=0V

  • Plate current

    1 mA

    GatedAmplifier;Grid3=0V

  • Screen-grid current

    1.3 mA

    GatedAmplifier;Grid3=0V

  • Plate resistance

    1000000 ohm

    GatedAmplifier;Grid3=0V

  • Transconductance

    1100 uS

    GatedAmplifier;Grid3=0V

  • Plate voltage

    100 V

    GatedAmplifier;Grid3=-1V

  • Screen-grid voltage

    30 V

    GatedAmplifier;Grid3=-1V

  • Grid No.1 bias

    0 V

    GatedAmplifier;Grid3=-1V

  • Plate current

    0.8 mA

    GatedAmplifier;Grid3=-1V

  • Screen-grid current

    5.5 mA

    GatedAmplifier;Grid3=-1V

  • Plate resistance

    700000 ohm

    GatedAmplifier;Grid3=-1V

  • Plate voltage

    10 V

    GatedAmplifier;Grid3=0V

  • Screen-grid voltage

    30 V

    GatedAmplifier;Grid3=0V

  • Grid No.1 bias

    0 V

    GatedAmplifier;Grid3=0V

  • Plate current

    2 mA

    GatedAmplifier;Grid3=0V

  • Screen-grid current

    4.5 mA

    GatedAmplifier;Grid3=0V

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Heptode

Other

  • Maximum Cathode Current

    14 mA

Characteristic

  • Heater Warmup Time

    11 s

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

1966 Tung Sol Electronic Tubes 1 of 4

Published operating points and test conditions from this source.

SECTION 1

Heptode

Characteristic

  • Heater voltage

    3.15 V

    Published heater rating

  • Heater current

    600 mA

    Published heater rating

  • Transconductance

    1100 µS

    Grid1ToPlate

Other

  • Maximum plate voltage

    300 V

    Published limit

  • Maximum grids 2 and 4 supply voltage

    300 V

    Published limit

  • Plate voltage

    100 V

    DualControl

  • Grids 2 and 4 voltage

    30 V

    DualControl

  • Plate current

    1 mA

    DualControl

  • Grids 2 and 4 current

    1.3 mA

    DualControl

Data set 05

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Heptode

Other

  • Heater warm-up time

    11 s

Data set 06

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Heptode

Characteristics

  • Current — published value 1

    0.6

    Published datasheet value; multiple numbers on a row represent separate source limits or conditions.

  • Current — published value 2

    0.04

    Published datasheet value; multiple numbers on a row represent separate source limits or conditions.

  • Voltage (ac or dc) at 0.600 A — published value 1

    0 V

    Published datasheet value; multiple numbers on a row represent separate source limits or conditions.

  • Voltage (ac or dc) at 0.600 A — published value 2

    0.6 V

    Published datasheet value; multiple numbers on a row represent separate source limits or conditions.

  • Voltage (ac or dc) at 0.600 A — published value 3

    3.15 V

    Published datasheet value; multiple numbers on a row represent separate source limits or conditions.

Data set 07

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