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Power - TV Vertical Output ·Triode-Triode

6CY7

Dual triode intended for television vertical-deflection service, combining oscillator/driver and power-output functions where applicable. Manufacturer data emphasize vertical-sweep operation, pulse-voltage capability, and the stronger section’s current and dissipation requirements.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 9EF
Socket code: B9A
Base pins: 9
Nominal heater: 6.3 V / 750 mA

Description

Miniature dual triode combining a high-mu oscillator section and a low-mu power section for television vertical-deflection oscillator and amplifier 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: 9EF
Socket code: B9A
Base pins: 9
Nominal heater voltage: 6.3 V
Nominal heater current: 750 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

9EF - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1Base Pin	B	P — Plate (Anode) Original chart label: 2P; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9EF
PIN3Base Pin	B	G1 — Control Grid Original chart label: 2G1; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9EF
PIN4Base Pin	—	H — Heater Original chart label: H; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9EF
PIN5Base Pin	—	H — Heater Original chart label: H; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9EF
PIN6Base Pin	A	P — Plate (Anode) Original chart label: 1P; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9EF
PIN7Base Pin	A	G1 — Control Grid Original chart label: 1G1; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9EF
PIN8Base Pin	A	K — Cathode Original chart label: 1K; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9EF
PIN9Base Pin	B	K — Cathode Original chart label: 2K; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9EF

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 52000 Ω
Transconductance: 0.0013 S
Amplification factor: 68
Max plate voltage: 350 V
Max plate dissipation: 1 W
Max cathode current: 35 mA

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

Section 2

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 920 Ω
Transconductance: 0.0054 S
Amplification factor: 5
Max plate voltage: 350 V
Max plate dissipation: 5.5 W
Max cathode current: 35 mA

Section 2 vertical-deflection amplifier; 1800 V pulse limit 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

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Plate Voltage
150 V
Published operating/characteristic table
Grid Voltage
-3 V
Published operating/characteristic table

Characteristic

Plate Current
30 mA
Published operating/characteristic table
Transconductance
5400 uS
Published operating/characteristic table
Plate Resistance
920 ohm
Published operating/characteristic table

Data set 02

1966 Tung Sol Electronic Tubes 2 of 4

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Plate voltage
250 V
Section1
Grid voltage
-3 V
Section1

Characteristic

Plate current
2.2 mA
Section1

SECTION 2

Triode

Other

Maximum DC plate voltage
350 V
Section2
Maximum peak positive pulse plate voltage
1800 V
Section2
Plate voltage
150 V
Section2
Cathode-bias resistor
620 ohm
Section2

Characteristic

Plate current
30 mA
Section2

Data set 03

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

HeaterVoltageNominal
6.3 V
HeaterCurrentNominal
750 mA

Characteristic

Plate Resistance
52000 Ohm
Transconductance
1300 uS
Amplification Factor
68

SECTION 2

Triode

Characteristic

Plate Resistance
920 Ohm
Transconductance
5400 uS
Amplification Factor
5

Other

Peak Positive Pulse Plate Voltage
1800 V
VerticalDeflection
Peak Cathode Current
120 mA
VerticalDeflection

Data set 04

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Voltage (AC or DC) — published value 1
6.3 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Voltage (AC or DC) — published value 2
10 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Current
750 mA
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
4.4
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid to cathode and heater — published value 1
1.5
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid to cathode and heater — published value 2
5
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate to cathode and heater — published value 1
0.3
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate to cathode and heater — published value 2
1
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate Supply Voltage — published value 1
250 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate Supply Voltage — published value 2
60 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate Supply Voltage — published value 3
150 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid Voltage — published value 1
3 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid Voltage — published value 2
0 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Cathode Resistor
620 ohm
Published datasheet value; multiple values represent separate source-table limits or conditions.
Amplification Factor — published value 1
68 A
Published datasheet value; multiple values represent separate source-table limits or conditions.
Amplification Factor — published value 2
5 A
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate Resistance (Approx.) — published value 1
52000 ohm
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate Resistance (Approx.) — published value 2
920 ohm
Published datasheet value; multiple values represent separate source-table limits or conditions.
Transconductance — published value 1
1300
Published datasheet value; multiple values represent separate source-table limits or conditions.
Transconductance — published value 2
5400
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate Current — published value 1
1.2 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate Current — published value 2
80 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
Plate Current — published value 3
30 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
plate µa = 10 — published value 1
10 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
plate µa = 10 — published value 2
5.5 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
plate µa = 200 — published value 1
200 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
plate µa = 200 — published value 2
40 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Pin 1 —Plate of — published value 1
1
Published datasheet value; multiple values represent separate source-table limits or conditions.
Pin 1 —Plate of — published value 2
6
Published datasheet value; multiple values represent separate source-table limits or conditions.
Pin 2 —Internal Con— — published value 1
2
Published datasheet value; multiple values represent separate source-table limits or conditions.
Pin 2 —Internal Con— — published value 2
7
Published datasheet value; multiple values represent separate source-table limits or conditions.
Do Not Use
8
Published datasheet value; multiple values represent separate source-table limits or conditions.
Pin 3 —Grid of
3
Published datasheet value; multiple values represent separate source-table limits or conditions.
Unit No.2
3
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
5
Published datasheet value; multiple values represent separate source-table limits or conditions.

Other

DC PLATE VOLTAGE
350 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
PEAK NEGATIVE-PULSE GRID•VOLTAGE•
400 V
Pulse
PLATE DISSIPATION
1 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
Heater negative with respect to cathode 200 max
200 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Heater positive with respect to cathode 200 max
200 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid-Circuit Resistance — published value 1
2 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
Grid-Circuit Resistance — published value 2
2 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
DC PLATE VOLTAGE
350 V
Published datasheet value; multiple values represent separate source-table limits or conditions.
PEAK POSITIVE-PULSE PLATE VOLTAGE#
1800 V
Pulse
PEAK NEGATIVE-PULSE GRID VOLTAGE
250 V
Pulse
Peak
120 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
PLATE DISSIPATION — published value 1
5 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
PLATE DISSIPATION — published value 2
5 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
For cathode—bias operation — published value 1
2 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.
For cathode—bias operation — published value 2
2 mA
Published datasheet value; multiple values represent separate source-table limits or conditions.

Data set 05

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Plate voltage
250 V
ClassA
Grid voltage
-3 V
ClassA
Plate current
1.2 mA
ClassA

SECTION 2

Triode

Other

Plate voltage
150 V
ClassA
Cathode-bias resistor
620 ohm
ClassA
Plate current
30 mA
ClassA
Peak positive-pulse plate voltage
1800 V
VerticalDeflection
Peak cathode current
120 mA
VerticalDeflection
Average cathode current
35 mA
VerticalDeflection