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Voltage - Triode (single high frequency) ·Triode

6FH5

High-mu miniature triode used as an RF amplifier in VHF color and black-and-white television tuners.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
7FP
Socket code
B7G
Base pins
7
Nominal heater
6.3 V / 155 mA

Description

High-mu miniature triode used as an RF amplifier in VHF color and black-and-white television tuners.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
7FP
Socket code
B7G
Base pins
7
Nominal heater voltage
6.3 V
Nominal heater current
155 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

7FP - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1KAK — Cathode

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 7FP

PIN2G1AG1 — Control Grid

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 7FP

PIN3H—H — Heater

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 7FP

PIN4H—H — Heater

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 7FP

PIN5PAP — Plate (Anode)

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 7FP

PIN6ISAIS — Internal Screen

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 7FP

PIN7KAK — Cathode

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 7FP

Section ratings

1 physical section, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
5600 Ω
Transconductance
0.009 S
Amplification factor
50
Max plate voltage
330 V
Max plate dissipation
2.5 W
Max cathode current
22 mA

Published maximum ratings and characteristic values promoted where applicable; additional values retained in TUBE_SECTION_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

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate voltage

    135 V

  • Grid voltage

    -1 V

  • Plate current

    11 mA

Characteristics

  • Plate resistance

    5600 Ohm

  • Transconductance

    9000 uS

  • Amplification factor

    50 ratio

  • Control-grid cutoff voltage

    -5.5 V

Data set 02

1965 Westinghouse Data Book

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate voltage maximum

    150 V

  • Typical plate voltage

    135 V

Characteristics

  • Plate resistance

    5600 ohm

  • Amplification factor

    52

  • Transconductance

    11000 uS

Application

  • Application

    Grounded-cathode VHF RF amplifier

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

    135 V

    ClassA

  • Grid_voltage

    -1 V

    ClassA

Characteristic

  • Plate_current

    11 mA

    ClassA

Capacitance

  • Grid-to-plate capacitance maximum

    0.52 pF

  • Input capacitance

    3.2 pF

  • Output capacitance

    4 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

    135 V

    ClassA

  • Plate current

    11 mA

    ClassA

  • Maximum plate voltage

    330 V

  • Grid to plate — published value 1

    0 mA

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

  • Grid to plate — published value 2

    6 mA

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

  • Grid to plate — published value 3

    0.6 mA

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

  • PLATE VOLTAGE

    150 V

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

  • Positive-bias value

    0 V

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

  • CATHODE CURRENT

    22 mA

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

  • PLATE DISSIPATION

    2.2 mA

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

  • respect to cathode

    100 V

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

Characteristics

  • Plate resistance

    5600 ohm

    ClassA

  • Transconductance

    9000 uS

    ClassA

  • Amplification factor

    50

    ClassA

  • Voltage (AC or DC) — published value 1

    6.3 V

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

  • Voltage (AC or DC) — published value 2

    10 V

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

  • shield, and heater — published value 1

    32

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

  • shield, and heater — published value 2

    3.2

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

  • shield, and heater

    32

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

  • Plate Voltage

    135 V

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

  • Grid Voltage

    -1 V

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

  • Plate Resistance (Approx.)

    5600 ohm

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

  • Transconductance

    9000

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

  • Plate Current

    11 mA

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

  • plate µa = 100 — published value 1

    100 V

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

  • plate µa = 100 — published value 2

    -5.5 V

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

  • Pin 1 -Cathode — published value 1

    1

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

  • Pin 1 -Cathode — published value 2

    5

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

  • Pin 2 -Grid

    2

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

  • Pin 3 -Heater

    3

    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

    7

    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) 2.35

    6.3 V

    Published in approved 6FH5 target entry; Section1

  • Heater Current

    200 mA

    Published in approved 6FH5 target entry; Section1

  • Plate Voltage

    150 V

    Published in approved 6FH5 target entry; Section1

  • Grid Voltage, Positive-bias value

    0 V

    Published in approved 6FH5 target entry; Section1

  • Cathode Current

    22 mA

    Published in approved 6FH5 target entry; Section1

  • Plate Dissipation

    2.2 W

    Published in approved 6FH5 target entry; Section1

  • Grid-Circuit Resistance, for cathode-bias operation

    1 MΩ

    Published in approved 6FH5 target entry; Section1

Capacitance

  • Grid to Plate 0.52

    0.52 pF

    Published in approved 6FH5 target entry; Section1

  • Grid to Cathode, Heater, and Internal Shield . . 3.2

    3.2 pF

    Published in approved 6FH5 target entry; Section1

  • Plate to Cathode, Heater, and Internal Shield . 3.2

    4 pF

    Published in approved 6FH5 target entry; Section1

Characteristic

  • Plate Voltage

    135 V

    Published in approved 6FH5 target entry; Section1

  • Grid Voltage

    1 V

    Published in approved 6FH5 target entry; Section1

  • Plate Resistance (Approx.)

    5600 Ω

    Published in approved 6FH5 target entry; Section1

  • Transconductance

    9000 µS

    Published in approved 6FH5 target entry; Section1

  • Plate Current

    11 mA

    Published in approved 6FH5 target entry; Section1

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

    -5.5 V

    Published in approved 6FH5 target entry; Section1