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Voltage Pentode - Remote Cutoff (single) ·Pentode

EF92

Miniature variable-mu RF pentode for controlled RF and IF amplification in communications and professional receiver equipment.

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

Description

Miniature variable-mu RF pentode for controlled RF and IF amplification. Published heater, characteristics, ratings and application information were read from the supplied Mullard sheet.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
B7G
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

B7G - 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
900000 Ω
Transconductance
0.0045 S
Max plate voltage
250 V
Max screen voltage
250 V
Max plate dissipation
2.5 W
Max screen dissipation
0.6 W
Max cathode current
12 mA

Published ratings/characteristics promoted from the 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

1951 Mullard Valve and Service Manual

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

  • Cutoff characteristic

    Variable-mu

Application

  • Application

    HF amplification

Data set 02

1953 La Radiotechnique

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • HeaterVoltageNominal

    6.3 V

    Nominal

  • HeaterCurrentNominal

    200 mA

    Nominal

  • Maximum Plate Voltage

    250 V

  • Maximum Screen Voltage

    250 V

  • Maximum Plate Dissipation

    2.5 W

Characteristic

  • Transconductance

    4500 µS

    Typical

Data set 03

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Pentode

Capacitance

  • Input capacitance

    4.5 pF

    Shielded socket

  • Output capacitance

    7 pF

    Shielded socket

Characteristic

  • Anode current

    8 mA

    Va=250V; Vg2=150V

  • Screen current

    2 mA

    Va=250V; Vg2=150V

Other

  • Maximum operating frequency

    160 Mc/s

Data set 04

1963 Philips Electron Tubes Handbook V1a

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    200 mA

    Published heater rating

  • Transconductance

    2100 µS

    RForIFAmplifier

Other

  • Plate voltage

    250 V

    RForIFAmplifier

  • Screen voltage

    100 V

    RForIFAmplifier

  • Plate current

    7.5 mA

    RForIFAmplifier

Data set 05

1967 Mullard Receiving and Amplifying Valves

Published operating points and test conditions from this source.

SECTION 1

Pentode

Capacitance

  • 4.8

    5 pF

    Published in approved EF92 target datasheet entry; Section1

  • Cout 6.3

    6.5 pF

    Published in approved EF92 target datasheet entry; Section1

  • Ca - gl < 15 <

    0.01 pF

    Published in approved EF92 target datasheet entry; Section1

  • Cll - k 2.3

    2.3 pF

    Published in approved EF92 target datasheet entry; Section1

Other

  • P g2 max

    600 mW

    Published in approved EF92 target datasheet entry; Section1

  • I k max

    12 mA

    Published in approved EF92 target datasheet entry; Section1

Data set 06

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Heater voltage

    6.3 V

    Heating

  • Heater current

    300 mA

    Heating

  • Maximum plate voltage

    300 V

    Promoted published datasheet value

  • Maximum screen voltage

    300 V

    Promoted published datasheet value

  • Maximum screen dissipation

    0.6 W

    Promoted published datasheet value

Characteristic

  • Transconductance

    2500 µS

    Promoted published datasheet value

  • Heizung : indirekt durch Wechsel= Ve =

    6.3 V

    Published datasheet value

  • oder Gleichstrom; Ip =

    200 mA

    Published datasheet value

  • Vg = 250

    250 v

    Published datasheet value

  • Vg2 = 150

    200 v

    Published datasheet value

  • Vg3 = 0

    0 v

    Published datasheet value

  • s = 2,5 2,5

    0.005 mA/V

    Published datasheet value

Capacitance

  • Capacitances - Cg1 =

    4.5 pF

    Capacitances

  • Capacités c =

    6.5 pF

    Capacitances

  • Cag1 =

    0.007 pF

    Capacitances