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Voltage Pentode - Remote Cutoff (single) ·Pentode

9003

Seven-pin miniature remote-cutoff UHF pentode electrically similar to type 956. Designed for controlled-gain ultra-high-frequency amplification, it combines miniature construction with variable-mu operation.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
7BD
Socket code
B7G
Base pins
7
Nominal heater
6.3 V / 150 mA

Description

Seven-pin miniature remote-cutoff UHF pentode electrically similar to 956.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

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

7BD - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1G1AG1 — Control Grid

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BD

PIN2G3AG3 — Suppressor GridGroup 7BD2

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BD

PIN2ISAIS — Internal ScreenGroup 7BD2

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BD

PIN2KAK — CathodeGroup 7BD2

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BD

PIN3H—H — Heater

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BD

PIN4H—H — Heater

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BD

PIN5PAP — Plate (Anode)

EIA chart transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BD

PIN6G2AG2 — Screen Grid

EIA chart transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BD

PIN7G3AG3 — Suppressor GridGroup 7BD7

EIA chart transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BD

PIN7ISAIS — Internal ScreenGroup 7BD7

EIA chart transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BD

PIN7KAK — CathodeGroup 7BD7

EIA chart transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BD

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
700000 Ω
Transconductance
0.0018 S
Max plate voltage
250 V
Max screen voltage
100 V
Max plate dissipation
1.7 W
Max screen dissipation
0.3 W

Remote-cutoff RF pentode.

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

    250 V

    Published handbook rating

  • Maximum screen voltage

    100 V

    Published handbook rating

  • Plate voltage

    250 V

    ClassA

  • Screen voltage

    100 V

    ClassA

  • Control-grid bias

    3 V

    ClassA

  • Plate current

    6.7 mA

    ClassA

  • Screen current

    2.7 mA

    ClassA

Characteristic

  • Plate resistance

    700000 ohm

    Published handbook characteristic

  • Transconductance

    1800 µS

    Published handbook characteristic

  • Heater/filament voltage

    6.3 V

    Published heater/filament rating

  • Heater/filament current

    150 mA

    Published heater/filament rating

Data set 02

195X Raytheon Special Purpose Tubes

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Plate voltage

    250 V

    UHFAmplifier

  • Control-grid voltage

    -3 V

    UHFAmplifier

  • Screen voltage

    100 V

    UHFAmplifier

  • Plate current

    6.7 mA

    UHFAmplifier

  • Screen current

    2.7 mA

    UHFAmplifier

Characteristic

  • Plate resistance

    0.7 MΩ

    Section1

  • Transconductance

    1800 µS

    Section1

Data set 03

1960 RCA Industrial and Communications Types

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

  • HeaterOrFilamentVoltage

    6.3 V

  • HeaterOrFilamentCurrent

    150 mA

  • EquivalentElectricalType

    956

  • Conversion Transconductance

    600 uS

    Mixer

Data set 04

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Heater voltage

    6.3 V

  • Heater current

    150 mA

  • Plate current

    6.7 mA

    ClassA

  • Screen current

    2.7 mA

    ClassA

Capacitance

  • Grid-to-plate capacitance maximum

    0.01 pF

    ExternalShield

  • Input capacitance

    3.4 pF

  • Output capacitance

    3 pF

Characteristic

  • Conversion transconductance

    600 uS

    Mixer

Data set 05

1971 RCA HB3 Binder 3 of 7

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

  • Current

    0.15

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

  • Pin 1 -Grid — published value 1

    1

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

  • Pin 1 -Grid — published value 2

    5

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

  • Pin 2 -Cathode — published value 1

    2

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

  • Pin 2 -Cathode — published value 2

    6

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

  • Pin 3 -Heater

    3

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

  • Pin 4 -Heater — published value 1

    4

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

  • Pin 4 -Heater — published value 2

    7

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

  • Screen Voltage

    100 V

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

  • Grid Voltage

    -3 V

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

  • Plate Voltage

    250 V

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

  • Screen Voltage

    100 V

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

  • Grid Voltage

    -3 V

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

  • Plate Resistance

    0.7 Mohm

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

  • Transconductance

    1800

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

  • Plate Current

    6.7 mA

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

  • Screen Current

    2.7 mA

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

  • Plate Voltage — published value 1

    100 V

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

  • Plate Voltage — published value 2

    250 V

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

  • Screen Voltage — published value 1

    100 V

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

  • Screen Voltage — published value 2

    100 V

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

  • Grid Voltage # — published value 1

    -10 V

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

  • Grid Voltage # — published value 2

    -10 V

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

  • Conversion Transconductance

    600

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

  • # ine grin Dias is minimum for an oscillator peak voltage Of 9 volts

    9 V

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

  • PLATE VOLTS = 250

    250 V

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

Other

  • Grid to Plate

    0.01 mA

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

  • Plate Voltage

    250 V

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

  • Plate Dissipation

    1.7 mA

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

  • Screen Dissipation

    0.3 mA

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