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Voltage Pentode ·Pentode

5847

High-gain miniature broad-band pentode intended for wideband amplification. Amperex and other manufacturer sources document broad-band operating conditions, high gain, and shielding considerations for signal circuits requiring substantial bandwidth.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
E9-1
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 300 mA

Description

5847 is listed in the supplied Amperex material as a high-gain miniature broad-band pentode. Published ratings and characteristics were captured from the supplied table.

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
E9-1
Socket code
B9A
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
300 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

E9-1 - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
100000 Ω
Transconductance
0.0125 S
Max plate voltage
180 V
Max screen voltage
150 V
Max plate dissipation
3 W
Max screen dissipation
0.75 W
Max cathode current
35 mA

Promoted fields mapped from printed maximum-rating and characteristic headings; additional published values preserved in parameter rows.

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

1938 Raytheon

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • HeaterVoltageNominal

    6.3 V

    Nominal

  • HeaterCurrentNominal

    300 mA

    Nominal

  • Maximum Plate Voltage

    200 V

  • Maximum Plate Dissipation

    3.3 W

  • Maximum Cathode Current

    40 mA

Characteristic

  • Transconductance

    13000 µS

    Typical

  • Plate Resistance

    200000 ohm

    Typical

Data set 02

1958 Amperex Industrial

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Plate dissipation maximum

    3 W

    Section1

  • Plate voltage maximum

    180 V

    Section1

  • Plate current maximum

    35 mA

    Section1

  • Application

    Broad-band amplifier

    Section1

  • Replacement for

    Western Electric 404A

    Section1

Characteristic

  • Transconductance

    12500 µS

    Section1

Data set 03

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Pentode

Capacitance

  • Grid To Plate Capacitance

    0.04 pF

    Maximum;WithShield

  • Input Capacitance

    7.8 pF

    WithShield

  • Output Capacitance

    3.4 pF

    WithShield

Characteristic

  • Transconductance

    15000 uS

    Typical

Data set 04

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

  • Heater voltage

    6.3 V

    Published rating

  • Heater current

    300 mA

    Published rating

  • Transconductance

    12500 µS

    BroadBandAmplifier

Other

  • Plate voltage

    160 V

    BroadBandAmplifier

  • Plate current

    13 mA

    BroadBandAmplifier

  • Screen voltage

    160 V

    BroadBandAmplifier

  • Screen current

    4.5 mA

    BroadBandAmplifier

Data set 05

1965 Ericsson Longlife

Published operating points and test conditions from this source.

SECTION 1

Pentode

Capacitance

  • Grid-to-plate capacitance

    0.05 pF

    ColdTube;Maximum

  • Input capacitance

    7 pF

    ColdTube;WithoutExternalShield

  • Output capacitance

    2.5 pF

    ColdTube;WithoutExternalShield

Other

  • Plate supply voltage

    150 V

    ClassA

  • Screen-grid supply voltage

    150 V

    ClassA

  • Cathode bias resistor

    110 Ohm

    ClassA

  • Plate current

    13.5 mA

    ClassA

  • Screen-grid current

    4 mA

    ClassA

  • Transconductance minimum

    10000 uS

  • Transconductance maximum

    16000 uS

  • Plate current maximum

    18 mA

  • Screen-grid current maximum

    6 mA

Characteristics

  • Transconductance

    13000 uS

    ClassA

  • Plate resistance

    0.2 MOhm

    ClassA

  • Equivalent noise resistance

    500 Ohm

    ClassA

  • Input conductance at 100 MHz

    2000 uS

    ClassA

Data set 06

196X LM Ericsson

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

  • Heater voltage

    6.3 V

  • Heater current

    300 mA

  • Plate resistance

    500 ohm

  • Transconductance

    16000 uS

Other

  • Maximum plate voltage

    200 V

  • Maximum screen voltage

    165 V

  • Maximum plate dissipation

    3.3 W

Data set 07

1971 RCA HB3 Binder 3 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 on a source row represent separate source-table conditions or limits.

  • Voltage (AC or DC) — published value 2

    0.6 V

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

  • Current at heater volts = 6.3 — published value 1

    6.3 V

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

  • Current at heater volts = 6.3 — published value 2

    0 V

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

  • Current at heater volts = 6.3 — published value 3

    300 V

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

  • heater — published value 1

    7

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

  • heater — published value 2

    7.1

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

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

    2.5

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

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

    2.9

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

  • Plate Supply Voltage — published value 1

    150 V

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

  • Plate Supply Voltage — published value 2

    160 V

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

  • Grid-No.2 Supply Voltage — published value 1

    150 V

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

  • Grid-No.2 Supply Voltage — published value 2

    160 V

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

  • Grid-No.1 Voltage

    8.5 V

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

  • Transconductance — published value 1

    12500

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

  • Transconductance — published value 2

    12500

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

  • Plate Current — published value 1

    13 mA

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

  • Plate Current — published value 2

    13 mA

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

  • Grid-No.2 Current — published value 1

    4.5 mA

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

  • Grid-No.2 Current — published value 2

    4.5 mA

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

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

    1

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

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

    5

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

Other

  • Grid No.l to plate — published value 1

    0 mA

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

  • Grid No.l to plate — published value 2

    5 mA

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

  • Grid No.l to plate — published value 3

    0.04 mA

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

Data set 08

2026 Western Electric 400s

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Screen-Grid Dissipation

    0.75 watt

    Screen-Grid Dissipation 0.75 watt

Characteristic

  • Heater Current

    300 amperes

    Heater Current 300 mi I I i amperes

  • Screen-Grid Current U

    5 amperes

    Screen-Grid Current U.5 U.5 mII 1i amperes

Data set 09

2026 Western Electric Other

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Plate Voltage Maximum

    180 V

    Design-center value

  • Screen-Grid Voltage Maximum

    150 V

    Design-center value

  • Plate Dissipation Maximum

    3 W

    Design-center value

  • Screen-Grid Dissipation Maximum

    0.75 W

    Design-center value

  • Cathode Current Maximum

    35 mA

    Design-center value

  • Heater-Cathode Voltage Maximum

    50 V

    Design-center value

  • Grid Resistance Maximum

    0.1 megohm

    Design-center value

  • Bulb Temperature Maximum

    120 degC

    Design-center value

  • Heater Voltage

    6.3 V

    A-C or D-C

  • Heater Current

    300 mA

    General characteristics

  • Plate Supply Voltage

    150 V

    Operating column 1

  • Screen-Grid Supply Voltage

    150 V

    Operating column 1

  • Control Grid Voltage

    0 V

    Operating column 1

  • Cathode Resistor

    110 ohm

    Operating column 1

  • Plate Supply Voltage

    160 V

    Operating column 2; minimized gain variation

  • Screen-Grid Supply Voltage

    160 V

    Operating column 2; minimized gain variation

Capacitance

  • Grid-to-Plate Capacitance Maximum

    0.5 pF

    Without external shield

  • Input Capacitance

    7 pF

    Without external shield

  • Output Capacitance

    2.5 pF

    Without external shield

  • Grid-to-Plate Capacitance Maximum

    0.4 pF

    With external shield RMA #315

  • Input Capacitance

    7.1 pF

    With external shield RMA #315

  • Output Capacitance

    2.9 pF

    With external shield RMA #315

Characteristic

  • Plate Current

    13 mA

    Operating column 1

  • Screen-Grid Current

    4.5 mA

    Operating column 1

  • Transconductance

    12500 uS

    Operating column 1