Alternatives & variations Download PDF datasheet

Voltage Radio Detector Converter ·Tetrode-Triode

6CQ8

Television triode-tetrode whose tetrode serves as mixer, video-IF, or sound-IF amplifier while the triode provides associated signal functions.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 9GE
Socket code: B9A
Base pins: 9
Nominal heater: 6.3 V / 450 mA

Description

Miniature type used in color and black-and-white tele- vision receiver applications. The tetrode unit is used as a mixer, video if amplifier, or sound if amplifier °2tr tube. The triode unit is used in vhf oscillator, phase- splitter, sync-clipper, sync-separator, and rf amplifier 6 lTlf circuits.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 9GE
Socket code: B9A
Base pins: 9
Nominal heater voltage: 6.3 V
Nominal heater current: 450 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

9GE - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1Base Pin	A	P — Plate (Anode) Literal label 1P; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9GE
PIN2Base Pin	B	G1 — Control Grid Literal label 2G1; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9GE
PIN3Base Pin	B	G2 — Screen Grid Literal label 2G2; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9GE
PIN4Base Pin	—	H — Heater Literal label H; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9GE
PIN5Base Pin	—	H — Heater Literal label H; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9GE
PIN6Base Pin	B	P — Plate (Anode) Literal label 2P; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9GE
PIN7Base Pin	B	K — CathodeGroup 9GE7 Literal label 2K; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9GE
PIN7Base Pin	—	IS — Internal ScreenGroup 9GE7 Literal label IS; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9GE
PIN8Base Pin	A	K — Cathode Literal label 1K; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9GE
PIN9Base Pin	A	G1 — Control Grid Literal label 1G1; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9GE

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 5000 Ω
Transconductance: 0.008 S
Amplification factor: 40
Max plate voltage: 330 V
Max plate dissipation: 3.2 W

Published promoted values applied where applicable; additional ratings and operating data retained as parameters.

Section 2

Tetrode

X-ray radiationInterelectrode capacitances

Plate resistance: 140000 Ω
Transconductance: 0.0058 S
Max plate voltage: 330 V
Max screen voltage: 330 V
Max plate dissipation: 3.1 W
Max screen dissipation: 0.7 W

Published promoted values applied where applicable; additional ratings and operating data retained as parameters.

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

1966 Tung Sol Electronic Tubes 2 of 4

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Maximum heater-cathode voltage, peak
200 V
Plate supply voltage
125 V
ClassA
Cathode-bias resistor
56 ohm
ClassA

Characteristic

Plate current
15 mA
ClassA

Capacitance

Grid-to-plate capacitance
1.8 pF
Grid-to-cathode-and-heater capacitance
2.4 pF
Plate-to-cathode-and-heater capacitance
1.2 pF

SECTION 2

Tetrode

Other

Maximum heater-cathode voltage, peak
200 V
Plate supply voltage
125 V
ClassA
Screen supply voltage
125 V
ClassA
Control-grid voltage
-1 V
ClassA

Characteristic

Plate current
12 mA
ClassA
Screen current
4.2 mA
ClassA

Capacitance

Grid-1-to-plate capacitance maximum
0.09 pF
Plate output capacitance
2.5 pF

Data set 02

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

HeaterVoltageNominal
6.3 V
HeaterCurrentNominal
450 mA
Typical Plate Voltage
125 V
ClassA
Typical Screen Voltage
125 V
ClassA

Characteristic

Plate Resistance
140000 Ohm
Transconductance
5800 uS

SECTION 2

Tetrode

Characteristic

Plate Resistance
5000 Ohm
Transconductance
8000 uS
Amplification Factor
40

Other

Typical Plate Voltage
125 V
ClassA

Data set 03

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Voltage (AC or DC)
6.3 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Current — published value 1
450 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
Current — published value 2
6 A
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid to plate — published value 1
1.8
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid to plate — published value 2
1.8
Published datasheet value; multiple values represent separate source-table limits or conditions.
heater — published value 1
2.7
Published datasheet value; multiple values represent separate source-table limits or conditions.
heater — published value 2
2.7
Published datasheet value; multiple values represent separate source-table limits or conditions.
heater — published value 1
0.4
Published datasheet value; multiple values represent separate source-table limits or conditions.
heater — published value 2
1.2
Published datasheet value; multiple values represent separate source-table limits or conditions.
No.2, and heater — published value 1
5
Published datasheet value; multiple values represent separate source-table limits or conditions.
No.2, and heater — published value 2
5
Published datasheet value; multiple values represent separate source-table limits or conditions.
No.2, and heater — published value 1
2.5
Published datasheet value; multiple values represent separate source-table limits or conditions.
No.2, and heater — published value 2
3.3
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate Supply Voltage — published value 1
125 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate Supply Voltage — published value 2
125 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid-No.2 Supply Voltage
125 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid-No.l Supply Voltage
-1 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Cathode Resistor
56 ohm
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate Resistance (Approx.) — published value 1
5000 ohm
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate Resistance (Approx.) — published value 2
140000 ohm
Published datasheet value; multiple values represent separate source-table limits or conditions.
Transconductance — published value 1
8000
Published datasheet value; multiple values represent separate source-table limits or conditions.
Transconductance — published value 2
5800
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate Current — published value 1
15 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate Current — published value 2
12 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid-No.2 Current
4.2 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
for plate µa - 100 — published value 1
100 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
for plate µa - 100 — published value 2
-7 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
for plate µa - 100 — published value 3
-7 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Pin 1 -Triode Plate — published value 1
1
Published datasheet value; multiple values represent separate source-table limits or conditions.
Pin 1 -Triode Plate — published value 2
7
Published datasheet value; multiple values represent separate source-table limits or conditions.
Pin 2-Tetrode
2
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid No.2
8
Published datasheet value; multiple values represent separate source-table limits or conditions.
Pin 4 -Heater
4
Published datasheet value; multiple values represent separate source-table limits or conditions.
Pin 5 -Heater — published value 1
5
Published datasheet value; multiple values represent separate source-table limits or conditions.
Pin 5 -Heater — published value 2
9
Published datasheet value; multiple values represent separate source-table limits or conditions.
Pin 6 -Tetrode Plate
6
Published datasheet value; multiple values represent separate source-table limits or conditions.
330 volts
330 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
GRID-NS'2 VOLTS=125 — published value 1
2 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
GRID-NS'2 VOLTS=125 — published value 2
125 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
GRID-NS'2 VOLTS=125 — published value 3
0 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
PLATE(Ib) OR GRID-Ns2 (I~2) MILLIAMPERES
2 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
PLATE VOLTS=125
125 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
GRID-Ns2 VOLTS=125
125 V
Published datasheet value; multiple values represent separate source-table limits or conditions.

Other

Grid No.l to plate — published value 1
0.019 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid No.l to plate — published value 2
0.015 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
plate — published value 1
0.07 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
plate — published value 2
0.01 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
PLATE VOLTAGE — published value 1
330 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
PLATE VOLTAGE — published value 2
330 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
SUPPLY VOLTAGE
330 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Positive-bias value — published value 1
0 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Positive-bias value — published value 2
0 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
GRID INPUT — published value 1
0 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
GRID INPUT — published value 2
55 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
PLATE DISSIPATION — published value 1
3.1 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
PLATE DISSIPATION — published value 2
3.2 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
respect to cathode — published value 1
200 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
respect to cathode — published value 2
200 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
respect to cathode — published value 1
200 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
respect to cathode — published value 2
200 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
For fixed-bias operation — published value 1
0.5 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
For fixed-bias operation — published value 2
0.25 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
For cathode-bias operation — published value 1
1 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
For cathode-bias operation — published value 2
1 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.

Data set 04

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Capacitance

Grid to Plate
1.8 pF
Published datasheet value
Grid to Cathode and Heater
2.7 pF
Published datasheet value
Plate to Cathode and Heater
1.2 PF
Published datasheet value
Plate to Cathode. Heater, Grid No
2
Published datasheet value
Tetrode Plate to Triode Plate
0.01 pF
Published datasheet value
Heater to Cathode (Each Unit)
3 pF
Published datasheet value

Characteristic

Plate Voltage
330 volts
Published datasheet value
Grid-No
330 volts
Published datasheet value
Grid-No
300
Published datasheet value
Grid-No.l (Control-Grid) Voltage, Positive-bias value
0 volts
Published datasheet value
Plate Dissipation
3.2 watts
Published datasheet value
For grid-No
0.7 volts
Published datasheet value
For grid-No
300 volts
Published datasheet value
Plate-Supply Voltage
125 volts
Published datasheet value
Grid-No
125 volts
Published datasheet value
Grid-No.l Voltage
-1
Published datasheet value
Amplification Factor
40
Published datasheet value
Plate Resistance (Approx.)
140000 ohms
Published datasheet value
Transconductance
5800
Published datasheet value
Plate Current
12 mA
Published datasheet value
Grid-No
4.2 mA
Published datasheet value
Grid-No
1
Published datasheet value