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Voltage Tetrode ·Tetrode

2EV5

VHF tetrode designed as the RF amplifier in television tuners, providing high-frequency gain with controlled cutoff characteristics for front-end receiver service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B7G
Base pins
7
Nominal heater
2.4 V / 600 mA

Description

Frame-grid tetrode for VHF television-tuner RF amplifier service.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B7G
Base pins
7
Nominal heater voltage
2.4 V
Nominal heater current
600 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

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

Tetrode

X-ray radiationInterelectrode capacitances
Plate resistance
150000 Ω
Transconductance
0.0088 S
Max plate voltage
275 V
Max screen voltage
180 V
Max plate dissipation
3.25 W
Max screen dissipation
0.2 W
Max cathode current
20 mA
Rectifier max heater-cathode voltage
200 V
Rectifier warm-up time
11 s

Published promoted fields populated from Maximum Ratings / Characteristics / Typical Operation headings.

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

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Capacitance

  • Grid4 To Plate Capacitance

    0.035 pF

    Maximum

  • Input Capacitance

    4.5 pF

  • Output Capacitance

    2.79 pF

Data set 02

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Plate voltage

    250 V

  • Screen-grid voltage

    80 V

  • Grid 1 voltage

    -1 V

Characteristics

  • Plate resistance

    150000 Ohm

  • Transconductance

    8800 uS

  • Control-grid cutoff voltage

    -4.5 V

Capacitance

  • Grid-to-plate capacitance

    0.035 pF

    Shielded

  • Input capacitance

    4.5 pF

    Shielded

  • Output capacitance

    2.9 pF

    Shielded

Data set 03

1965 Westinghouse Data Book

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristics

  • Heater Voltage

    2.4 V

  • Heater Current

    600 mA

  • Grid-Plate Capacitance

    0.035 pF

    Maximum; Shielded

  • Input Capacitance

    4.5 pF

    Shielded

  • Output Capacitance

    2.9 pF

    Shielded

  • Operating Frequency

    200 MHz

    NoiseFigureContext

Other

  • Maximum Plate Voltage

    275 V

  • Maximum Screen Supply Voltage

    180 V

  • Maximum Plate Dissipation

    3.25 W

  • Maximum Screen Dissipation

    0.2 W

  • Maximum Cathode Current

    20 mA

  • Plate Voltage

    250 V

  • Screen Voltage

    80 V

  • Grid Voltage

    -1 V

Data set 04

1966 Tung Sol Electronic Tubes 1 of 4

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Capacitance

  • GRID #i TO PLATE (MAX.J

    0.035 ΜΜF

    Capacitances | GRID #i TO PLATE (MAX.J 0.035 µµf

Other

  • HEATER VOLTAGE

    2.4 V

    Maximum Ratings | HEATER VOLTAGE 2.4 VOLTS

  • MAXIMUM PLATE VOLTAGE

    275 V

    Maximum Ratings | MAXIMUM PLATE VOLTAGE 275 VOLTS

  • MAXIMUM PLATE DISSIPATION

    3.25 W

    Maximum Ratings | MAXIMUM PLATE DISSIPATION 3.25 WATTS

  • MAXIMUM GRID #

    2 W

    Maximum Ratings | MAXIMUM GRID #2 DISSIPATION O.2 WATTS

  • HEATER VOLTAGE Z

    4 V

    Typical Operating Conditions | HEATER VOLTAGE Z.4 VOLTS

  • PLATE RESISTANCE

    0.15 Mohm

    Typical Operating Conditions | PLATE RESISTANCE 0.150 MEGOHM

  • PLATE CURRENT

    11.5 mA

    Typical Operating Conditions | PLATE CURRENT 11.5 MA.

  • GRID #

    0.9 mA

    Typical Operating Conditions | GRID #2 CURRENT 0.90 MA.