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Voltage Pentode - Remote Cutoff (single) ·Pentode

6BZ6

Semi-remote-cutoff high-transconductance pentode for gain-controlled television video-IF amplification and automatic gain control.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
7CM
Socket code
B7G
Base pins
7
Nominal heater
6.3 V / 300 mA

Description

Semiremote-cutoff pentode used in gain-controlled television video-IF amplifier stages.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

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

7CM - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1G1AG1 — Control Grid

EIA chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CM

PIN2KAK — Cathode

EIA chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CM

PIN3H—H — Heater

EIA chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CM

PIN4H—H — Heater

EIA chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CM

PIN5PAP — Plate (Anode)

EIA chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CM

PIN6G2AG2 — Screen Grid

EIA chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CM

PIN7G3AG3 — Suppressor GridGroup 7CM7

EIA chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CM

PIN7ISAIS — Internal ScreenGroup 7CM7

EIA chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CM

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
260000 Ω
Transconductance
0.008 S
Max plate voltage
330 V
Max screen voltage
330 V
Max plate dissipation
2.3 W
Max screen dissipation
0.55 W

Published promoted values applied where applicable; additional table 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

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Maximum plate voltage

    300 V

    Published handbook rating

  • Maximum screen voltage

    150 V

    Published handbook rating

  • Plate voltage

    200 V

    ClassA

  • Screen voltage

    150 V

    ClassA

  • Plate current

    11 mA

    ClassA

  • Screen current

    2.6 mA

    ClassA

Characteristic

  • Plate resistance

    600000 ohm

    Published handbook characteristic

  • Transconductance

    6100 µS

    Published handbook characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    300 mA

    Published heater rating

Capacitance

  • Input capacitance

    7.5 pF

    Published capacitance column

  • Output capacitance

    2.8 pF

    Published capacitance column

  • Grid-to-plate capacitance

    0.015 pF

    Published capacitance column

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Screen Voltage

    2 V

    Published operating/characteristic table

Data set 03

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Plate voltage

    125 V

  • Screen-grid voltage

    125 V

  • Cathode bias resistor

    56 Ohm

  • Plate current

    14 mA

  • Screen-grid current

    3.6 mA

Characteristics

  • Plate resistance

    260000 Ohm

  • Transconductance

    8000 uS

  • Control-grid cutoff voltage

    -19 V

Capacitance

  • Grid-to-plate capacitance

    0.015 pF

    Shielded

  • Input capacitance

    7 pF

    Shielded

  • Output capacitance

    3 pF

    Shielded

Data set 04

1965 Westinghouse Data Book

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

  • Heater Voltage

    6.3 V

  • Heater Current

    300 mA

  • Transconductance

    9000 uS

    RepresentativePublishedPoint

  • Plate Resistance

    260000 ohm

    RepresentativePublishedPoint

Other

  • Maximum Plate Voltage

    300 V

  • Maximum Plate Dissipation

    2 W

Data set 05

1966 Tung Sol Electronic Tubes 1 of 4

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

  • AMPLIFIER IN

    300 mA

    | AMPLIFIER IN 300 MA. SERIES HEATER OPERATED TELEVISION RECEIVERS.

  • HEATER CURRENT O

    3 A

    ClassA | HEATER CURRENT O.3 AMP.

  • PLATE VOLTAGE

    125 V

    ClassA | PLATE VOLTAGE 125 VOLTS

  • GRID #

    125 V

    ClassA | GRID #2 VOLTAGE 125 VOLTS

  • CATHODE BIAS RESISTOR

    56 ohm

    ClassA | CATHODE BIAS RESISTOR 56 OHMS

  • PLATE RESISTANCE (APPROX.J

    0.26 Mohm

    ClassA | PLATE RESISTANCE (APPROX.J 0.26 MEGOHM

  • PLATE CURRENT Z

    4 mA

    ClassA | PLATE CURRENT Z4 MA.

  • GRID #

    3.6 mA

    ClassA | GRID #2 CURRENT 3.6 MA.

  • GRID #

    50 uS

    ClassA | GRID #1 VOLTAGE (APPROX.) FOR Gm = 50 uMHOS —Z9 VOLTS

  • GRID #

    9 V

    ClassA | GRID #1 VOLTAGE (APPROX.) FOR Gm = 50 uMHOS —Z9 VOLTS

  • Transconductance

    8000 uS

    ClassA

  • Plate resistance

    0.26 Mohm

    ClassA

  • Grid voltage at gm=50 uS

    -29 V

  • Cutoff-region transconductance

    700 uS

    GridVoltage=-4.5V

Capacitance

  • GRID TO PLATE: G

    25 µµf

    Capacitances | GRID TO PLATE: G1 TO P (MA%.) .015 .025 µµf

Other

  • Plate voltage

    125 V

    ClassA

  • Screen-grid voltage

    125 V

    ClassA

  • Cathode bias resistor

    56 ohm

    ClassA

  • Plate current

    24 mA

    ClassA

  • Screen-grid current

    3.6 mA

    ClassA

Data set 06

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Pentode

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

    0.3

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • grid No.3 6 internal shield,

    6

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • grid No.2, and heater — published value 1

    7

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • grid No.2, and heater — published value 2

    7

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • and heater — published value 1

    2

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • and heater — published value 2

    3

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate Supply Voltage

    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.

  • Plate Resistance (Approx ) — published value 1

    0 ohm

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate Resistance (Approx ) — published value 2

    26 ohm

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Transconductance

    8000

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate Current

    14 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Grid-No.2 Current

    3.6 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 1 -Grid No.l — published value 1

    1

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 1 -Grid No.l — published value 2

    6

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 2 -Cathode — published value 1

    2

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 2 -Cathode — published value 2

    7

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 3 -Heater

    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 -Plate

    5

    Published datasheet value; multiple values represent separate source-table limits or conditions.

Other

  • Grid No.l to plate — published value 1

    0.025 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 VOLTAGE

    330 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • GRID-No.3 (SUPPRESSOR-GRID) VOLTAGE

    0 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

Data set 07

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Peak Plate Current

    180 mA

    Published in approved 12BZ6 target entry; Section1

  • Heater Voltage (ac/dc) 3.15 4.2 6.3

    12.6 V

    Published in approved 12BZ6 target entry; Section1

  • Heater Current 0.6 0.45 0.3

    150 mA

    Published in approved 12BZ6 target entry; Section1

  • age)

    11 seconds

    Published in approved 12BZ6 target entry; Section1

  • Plate Voltage

    330 V

    Published in approved 12BZ6 target entry; Section1

  • Grid No.3 (Suppressor-Grid) Voltage, Positive value

    0 V

    Published in approved 12BZ6 target entry; Section1

  • Grid-No.2 (Screen-Grid) Supply Voltage

    330 V

    Published in approved 12BZ6 target entry; Section1

  • Grid-No.l (Control-Grid) Voltage, Positive-bias value

    0 V

    Published in approved 12BZ6 target entry; Section1

  • Plate Dissipation

    2.3 W

    Published in approved 12BZ6 target entry; Section1

  • For grid-No. 2 voltages up to

    165 V

    Published in approved 12BZ6 target entry; Section1

  • For grid-No. 2 voltages up to 165 volts

    0.55 W

    Published in approved 12BZ6 target entry; Section1

  • For grid-No.2 voltages between 165 and

    330 V

    Published in approved 12BZ6 target entry; Section1

  • For fixed-bias operation

    0.25 MΩ

    Published in approved 12BZ6 target entry; Section1

  • For cathode-bias operation

    1 MΩ

    Published in approved 12BZ6 target entry; Section1

Characteristic

  • Plate Supply Voltage

    125 V

    Published in approved 12BZ6 target entry; Section1

  • Grid-No.2 Supply Voltage

    125 V

    Published in approved 12BZ6 target entry; Section1

  • Cathode-Bias Resistor

    56 Ω

    Published in approved 12BZ6 target entry; Section1

  • Plate Resistance (Approx.)

    0.26 MΩ

    Published in approved 12BZ6 target entry; Section1

  • Grid-No.l Voltage (Approx.) for transconductance of

    50 µS

    Published in approved 12BZ6 target entry; Section1

  • Grid-No.l Voltage (Approx.) for transconductance of 50 /imhos

    -3.6 V

    Published in approved 12BZ6 target entry; Section1

  • Grid-No.l Voltage (Approx.) for transconductance of

    700 µS

    Published in approved 12BZ6 target entry; Section1

  • Heater Voltage (ac/dc)

    6.3 V

    Published in approved 12BZ6 target entry; Section1

  • Heater Current

    150 mA

    Published in approved 12BZ6 target entry; Section1