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Power - TV Vertical Output ·Triode-Triode

6EW7

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
9HF
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 900 mA

Description

Dissimilar dual triode used as a combined vertical-deflection oscillator and vertical-deflection amplifier in television receivers.

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
9HF
Socket code
B9A
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
900 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

9HF - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1Base PinBP — Plate (Anode)

Literal label 2P; manufacturer confirmation pending

Unverified

EIA Base Connections printed p132, 9HF

PIN2Base PinBG1 — Control Grid

Literal label 2G1; manufacturer confirmation pending

Unverified

EIA Base Connections printed p132, 9HF

PIN3Base PinBG3 — Suppressor Grid

Literal label 2G3; manufacturer confirmation pending

Unverified

EIA Base Connections printed p132, 9HF

PIN4Base Pin—H — Heater

Literal label H; manufacturer confirmation pending

Unverified

EIA Base Connections printed p132, 9HF

PIN5Base Pin—H — Heater

Literal label H; manufacturer confirmation pending

Unverified

EIA Base Connections printed p132, 9HF

PIN6Base PinAP — Plate (Anode)

Literal label 1P; manufacturer confirmation pending

Unverified

EIA Base Connections printed p132, 9HF

PIN7Base PinAG1 — Control Grid

Literal label 1G1; manufacturer confirmation pending

Unverified

EIA Base Connections printed p132, 9HF

PIN8Base PinAK — Cathode

Literal label 1K; manufacturer confirmation pending

Unverified

EIA Base Connections printed p132, 9HF

PIN9Base PinBK — Cathode

Literal label 2K; manufacturer confirmation pending

Unverified

EIA Base Connections printed p132, 9HF

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
40000 Ω
Transconductance
0.0022 S
Amplification factor
80
Max plate voltage
330 V
Max plate dissipation
1.5 W
Max cathode current
20 mA
Rectifier max heater-cathode voltage
200 V
Rectifier warm-up time
11 s

Published promoted fields populated from the printed semantic headings.

Section 2

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
1000 Ω
Transconductance
0.0075 S
Amplification factor
7.5
Max plate voltage
220 V
Max plate dissipation
10 W
Max cathode current
100 mA
Rectifier max heater-cathode voltage
200 V
Rectifier warm-up time
11 s

Published promoted fields populated from the printed semantic headings.

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 2

Triode

Characteristic

  • Heater Voltage. .. ......... ... ... .... 6.3! 9.7 Volts

    9.7 V

    Heater Voltage. .. ......... ... ... .... 6.3! 9.7 Volts

  • Heater Current. ... .. ... ... ... .. ... ... 900 6002 Ma

    6002 mA

    Heater Current. ... .. ... ... ... .. ... ... 900 6002 Ma

  • Plate Voltage. .. ....................... 250 150 Volts

    150 V

    Plate Voltage. .. ....................... 250 150 Volts

  • Grid No. 1 Voltage. . . .................. -11 -17.5 Volts

    -17.5 V

    Grid No. 1 Voltage. . . .................. -11 -17.5 Volts

  • Plate Current. . ........................ 5.5 45 Ma

    45 mA

    Plate Current. . ........................ 5.5 45 Ma

  • Transconductance. .. ............... ..., 2000 7500 umhos

    7500 umhos

    Transconductance. .. ............... ..., 2000 7500 umhos

  • Plate Resistance (approx.)...... ....... .. 8750 800 Ohms

    800 Ohms

    Plate Resistance (approx.)...... ....... .. 8750 800 Ohms

Other

  • Maximum Heater Current Ranget. .. . .. .. _— 560-640 Ma

    -640 mA

    Maximum Heater Current Ranget. .. . .. .. _— 560-640 Ma

  • Plate Voltage. . . ....................... 330 330 Volts Max.

    330 V

    Plate Voltage. . . ....................... 330 330 Volts Max.

  • Peak Positive Pulse Plate Voltage........ — 1500 Volts Max.

    1500 V

    Peak Positive Pulse Plate Voltage........ — 1500 Volts Max.

  • Peak Negative Pulse Grid Voltage.... ... . 400 250 Volts Max.

    250 V

    Peak Negative Pulse Grid Voltage.... ... . 400 250 Volts Max.

  • Plate Dissipations. ..................... 1.5 10 Watts Max.

    10 W

    Plate Dissipations. ..................... 1.5 10 Watts Max.

  • Average Cathode Current. . ... .. .. ..... 22 50 Ma Max.

    50 mA

    Average Cathode Current. . ... .. .. ..... 22 50 Ma Max.

  • Peak Cathode Current. ... ... .. ... ... .. . 77 175 Ma Max.

    175 mA

    Peak Cathode Current. ... ... .. ... ... .. . 77 175 Ma Max.

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Section1PlateVoltage

    330 V

    Section1

SECTION 2

Triode

Other

  • Section2PlateVoltage

    220 V

    Section2

Data set 03

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

    -11 V

    Section1

Characteristic

  • Plate_current

    5.5 mA

    Section1

Capacitance

  • Grid-to-plate capacitance

    4.2 pF

  • Input capacitance

    2.2 pF

  • Output capacitance

    0.6 pF

SECTION 2

Triode

Other

  • Maximum_DC_plate_voltage

    330 V

  • Maximum_peak_cathode_current

    175 mA

  • Plate_voltage

    150 V

    Section2

  • Grid_voltage

    -13.5 V

    Section2

Characteristic

  • Plate_current

    45 mA

    Section2

Capacitance

  • Grid-to-plate capacitance

    9 pF

  • Input capacitance

    7 pF

  • Output capacitance

    1.2 pF

Data set 04

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate voltage

    250 V

    ClassA

  • Plate current

    5.5 mA

    ClassA

  • Maximum plate voltage

    330 V

  • DC PLATE VOLTAGE

    330 V

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

  • PLATE DISSIPATION — published value 1

    1 mA

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

  • PLATE DISSIPATION — published value 2

    5 mA

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

  • Heater negative with respect to cathode. 200 max

    200 V

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

  • Heater positive with respect to cathode. 200c max

    200 V

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

  • bias operation — published value 1

    2 mA

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

  • bias operation — published value 2

    2 mA

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

  • DC PLATE VOLTAGE

    330 V

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

  • PEAK POSITIVE-PULSE PLATE VOLTAGEd

    1500 V

    Pulse

  • PEAK NEGATIVE-PULSE GRID VOLTAGE

    250 V

    Pulse

  • PLATE DISSIPATION

    10 mA

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

  • Heater positive with respect to cathode. 200° max

    200 V

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

Characteristics

  • Plate resistance

    8750 ohm

    ClassA

  • Transconductance

    2000 uS

    ClassA

  • Amplification factor

    17.5

    ClassA

  • Voltage (AC or DC) — published value 1

    6 V

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

  • Voltage (AC or DC) — published value 2

    3 V

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

  • Voltage (AC or DC) — published value 3

    10 V

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

  • Current at 6.3 volts — published value 1

    6.3 V

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

  • Current at 6.3 volts — published value 2

    9 V

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

  • Grid to plate — published value 1

    4.2

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

  • Grid to plate — published value 2

    9

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

  • Grid to cathode and heater — published value 1

    2.2

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

  • Grid to cathode and heater — published value 2

    7

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

  • Plate to cathode and heater — published value 1

    0.4

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

  • Plate to cathode and heater — published value 2

    1.2

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

  • Plate Voltage — published value 1

    250 V

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

  • Plate Voltage — published value 2

    150 V

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

  • Grid Voltage — published value 1

    -11 V

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

  • Grid Voltage — published value 2

    -17.5 V

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

  • Plate Resistance (Approx ) — published value 1

    8750 ohm

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

  • Plate Resistance (Approx ) — published value 2

    800 ohm

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

  • Transconductance — published value 1

    2000

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

  • Transconductance — published value 2

    7500

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

  • Plate Current — published value 1

    5.5 mA

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

  • Plate Current — published value 2

    45 mA

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

  • 60 and grid volts = 0 — published value 1

    60 V

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

  • 60 and grid volts = 0 — published value 2

    0 V

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

  • 60 and grid volts = 0 — published value 3

    95 V

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

  • Pin 1 -Plate of — published value 1

    1

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

  • Pin 1 -Plate of — published value 2

    6

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

  • Pin 2-Grid of — published value 1

    2

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

  • Pin 2-Grid of — published value 2

    7

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

  • Pin 3-Grid of — published value 1

    3

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

  • Pin 3-Grid of — published value 2

    8

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

  • Pin 4 -Heater — published value 1

    4

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

  • Pin 4 -Heater — published value 2

    9

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

  • PEAK NEGATIVE-PULSE GRID VOLTAGE

    400 V

    Pulse

SECTION 2

Triode

Other

  • Plate voltage

    150 V

    ClassA

  • Plate current

    45 mA

    ClassA

  • Maximum plate voltage

    330 V

Characteristics

  • Plate resistance

    800 ohm

    ClassA

  • Transconductance

    7500 uS

    ClassA

  • Amplification factor

    6

    ClassA

  • Pin 5 -Heater

    5

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

Data set 05

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Heater Voltage (ac/dc) 6.3 9.7

    14.8 V

    Published in approved 6EW7 target entry; Section1

  • Heater Current 0.9 0.6

    450 mA

    Published in approved 6EW7 target entry; Section1

  • DC Plate Voltage 330

    330 V

    Published in approved 6EW7 target entry; Section1

  • Peak Positive-Pulse Plate Voltage*

    1500 V

    Published in approved 6EW7 target entry; Section1

  • Peak Negative-Pulse Grid Voltage 400

    250 V

    Published in approved 6EW7 target entry; Section1

  • Peak Cathode Current 77

    175 mA

    Published in approved 6EW7 target entry; Section1

  • Average Cathode Current 22

    50 mA

    Published in approved 6EW7 target entry; Section1

  • Plate Dissipation 1.5

    10 W

    Published in approved 6EW7 target entry; Section1

Capacitance

  • Grid to Plate 4.2

    9 pF

    Published in approved 6EW7 target entry; Section1

  • Grid to Cathode and Heater 2.2

    7 pF

    Published in approved 6EW7 target entry; Section1

  • Plate to Cathode and Heater 0.4

    1.2 pF

    Published in approved 6EW7 target entry; Section1

Characteristic

  • Plate Voltage 250

    150 V

    Published in approved 6EW7 target entry; Section1

  • —11

    -17.5 V

    Published in approved 6EW7 target entry; Section1

  • 8750

    800 Ω

    Published in approved 6EW7 target entry; Section1

  • 2000

    7500 µS

    Published in approved 6EW7 target entry; Section1

  • 5.5

    45 mA

    Published in approved 6EW7 target entry; Section1

  • Plate Current for plate voltage of

    60 V

    Published in approved 6EW7 target entry; Section1

  • Grid Voltage (Approx.) for plate current of 10 /lA

    -20 V

    Published in approved 6EW7 target entry; Section1

  • Grid Voltage (Approx.) for plate current of 100 /iA

    -40 V

    Published in approved 6EW7 target entry; Section1

SECTION 2

Triode

Other

  • Heater Voltage (ac/dc) 6.3 9.7

    14.8 V

    Published in approved 6EW7 target entry; Section2

  • Heater Current 0.9 0.6

    450 mA

    Published in approved 6EW7 target entry; Section2

  • DC Plate Voltage 330

    330 V

    Published in approved 6EW7 target entry; Section2

  • Peak Positive-Pulse Plate Voltage*

    1500 V

    Published in approved 6EW7 target entry; Section2

  • Peak Negative-Pulse Grid Voltage 400

    250 V

    Published in approved 6EW7 target entry; Section2

  • Peak Cathode Current 77

    175 mA

    Published in approved 6EW7 target entry; Section2

  • Average Cathode Current 22

    50 mA

    Published in approved 6EW7 target entry; Section2

  • Plate Dissipation 1.5

    10 W

    Published in approved 6EW7 target entry; Section2

Capacitance

  • Grid to Plate 4.2

    9 pF

    Published in approved 6EW7 target entry; Section2

  • Grid to Cathode and Heater 2.2

    7 pF

    Published in approved 6EW7 target entry; Section2

  • Plate to Cathode and Heater 0.4

    1.2 pF

    Published in approved 6EW7 target entry; Section2

Characteristic

  • Plate Voltage 250

    150 V

    Published in approved 6EW7 target entry; Section2

  • —11

    -17.5 V

    Published in approved 6EW7 target entry; Section2

  • 8750

    800 Ω

    Published in approved 6EW7 target entry; Section2

  • 2000

    7500 µS

    Published in approved 6EW7 target entry; Section2

  • 5.5

    45 mA

    Published in approved 6EW7 target entry; Section2

  • Plate Current for plate voltage of

    60 V

    Published in approved 6EW7 target entry; Section2

  • Grid Voltage (Approx.) for plate current of 10 /lA

    -20 V

    Published in approved 6EW7 target entry; Section2

  • Grid Voltage (Approx.) for plate current of 100 /iA

    -40 V

    Published in approved 6EW7 target entry; Section2