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Voltage - Triode (single high frequency) ·Triode

6HQ5

High-mu miniature triode used as an RF amplifier in VHF television tuners.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
7GM
Socket code
B7G
Base pins
7
Nominal heater
6.3 V / 200 mA

Description

High-mu miniature triode used as an RF amplifier in VHF 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
7GM
Socket code
B7G
Base pins
7
Nominal heater voltage
6.3 V
Nominal heater current
200 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

7GM - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1G1AG1 — Control Grid

EIA transcription; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 7GM

PIN2KAK — Cathode

EIA transcription; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 7GM

PIN3H—H — Heater

EIA transcription; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 7GM

PIN4H—H — Heater

EIA transcription; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 7GM

PIN5PAP — Plate (Anode)

EIA transcription; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 7GM

PIN6ISAIS — Internal Screen

EIA transcription; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 7GM

PIN7KAK — Cathode

EIA transcription; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 7GM

Section ratings

1 physical section, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
5400 Ω
Transconductance
0.015 S
Amplification factor
78
Max plate voltage
200 V
Max plate dissipation
2.5 W
Max cathode current
22 mA

Published section data extracted from approved source.

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

    11.5 mA

Characteristics

  • Plate resistance

    5400 Ohm

  • Transconductance

    15000 uS

  • Amplification factor

    78 ratio

  • Hot input resistance

    275 Ohm

Capacitance

  • Hot input capacitance

    11.2 pF

  • Grid-to-plate capacitance

    0.52 pF

    Shielded

  • Input capacitance

    5 pF

    Shielded

  • Output capacitance

    3.5 pF

    Shielded

Data set 02

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Heater Voltage (ac/dc) '2.4 3 4.2

    6.3 V

    Published in approved 2HQ5 target datasheet entry; Section1

  • Heater Current 0.6 0.45 0.3

    200 mA

    Published in approved 2HQ5 target datasheet entry; Section1

  • Heater Warm-up Time (Average) .11 11

    11 seconds

    Published in approved 2HQ5 target datasheet entry; Section1

  • Plate Voltage

    200 V

    Published in approved 2HQ5 target datasheet entry; Section1

  • Grid Voltage, Negative-bias Value

    50 V

    Published in approved 2HQ5 target datasheet entry; Section1

  • Cathode Current

    22 mA

    Published in approved 2HQ5 target datasheet entry; Section1

  • Plate Dissipation

    2.5 W

    Published in approved 2HQ5 target datasheet entry; Section1

  • Plate Voltage

    135 V

    Published in approved 2HQ5 target datasheet entry; Section1

  • Grid Voltage

    -1 V

    Published in approved 2HQ5 target datasheet entry; Section1

  • Grid-Circuit Resistance, for cathode-bias operation

    1 MΩ

    Published in approved 2HQ5 target datasheet entry; Section1

  • ** Measured at

    200 MHz

    Published in approved 2HQ5 target datasheet entry; Section1

  • # For a neutralized triode amplifier at a frequency of

    200 MHz

    Published in approved 2HQ5 target datasheet entry; Section1

  • Peak Plate Voltage*

    5500 V

    Published in approved 2HQ5 target datasheet entry; Section1

  • Plate Dissipation

    30 W

    Published in approved 2HQ5 target datasheet entry; Section1

  • Peak Plate Current

    325 mA

    Published in approved 2HQ5 target datasheet entry; Section1

  • Peak value

    -450 V

    Published in approved 2HQ5 target datasheet entry; Section1

  • Average value

    100 V

    Published in approved 2HQ5 target datasheet entry; Section1

  • Grid-Circuit Resistance*

    0.1 MΩ

    Published in approved 2HQ5 target datasheet entry; Section1

Capacitance

  • Grid to Plate

    0.52 pF

    Published in approved 2HQ5 target datasheet entry; Section1

  • Grid to Cathode, Heater, and Internal Shield

    5 pF

    Published in approved 2HQ5 target datasheet entry; Section1

  • Plate to Cathode, Heater, and Internal Shield

    3.5 pF

    Published in approved 2HQ5 target datasheet entry; Section1

  • Heater to Cathode

    2.5 pF

    Published in approved 2HQ5 target datasheet entry; Section1

Characteristic

  • Plate Resistance

    5400 Ω

    Published in approved 2HQ5 target datasheet entry; Section1

  • Transconductance

    15000 µS

    Published in approved 2HQ5 target datasheet entry; Section1

  • Plate Current

    11.5 mA

    Published in approved 2HQ5 target datasheet entry; Section1

  • Input Resistance**

    275 Ω

    Published in approved 2HQ5 target datasheet entry; Section1

  • Input Capacitance**

    11.2 pF

    Published in approved 2HQ5 target datasheet entry; Section1

  • Grid Voltage (Approx.) for transconductance of

    150 µS

    Published in approved 2HQ5 target datasheet entry; Section1

  • Grid Voltage (Approx.) for transconductance of 150 /imhos

    -4.2 V

    Published in approved 2HQ5 target datasheet entry; Section1

  • Grid Voltage (Approx.) for transconductance of 1500 ftmhos

    -2.5 V

    Published in approved 2HQ5 target datasheet entry; Section1

  • Pulse Plate Voltage*

    3500 V

    Published in approved 2HQ5 target datasheet entry; Section1

  • Peak Plate Current

    300 mA

    Published in approved 2HQ5 target datasheet entry; Section1

  • Transconductance +200

    65000 µS

    Published in approved 2HQ5 target datasheet entry; Section1

  • Plate Resistance (Approx.)

    4600 Ω

    Published in approved 2HQ5 target datasheet entry; Section1

  • Grid Voltage (Approx.) for plate current of

    1 mA

    Published in approved 2HQ5 target datasheet entry; Section1

  • Grid Voltage (Approx.) for plate current of 1 mA

    -13 V

    Published in approved 2HQ5 target datasheet entry; Section1