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Voltage Pentode - Sharp Cutoff (single) ·Pentode

4EW6

Sharp-cutoff pentode designed for television IF, picture-IF, video, or VHF tuner amplifier service.

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

Description

Sharp-cutoff pentode for television video-output and 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
4.2 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

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
200000 Ω
Transconductance
0.014 S
Max plate voltage
330 V
Max screen voltage
330 V
Max plate dissipation
3.1 W
Max screen dissipation
0.5 W

Reference/equivalence-only source: ratings/characteristics for this section are not reproduced; missing promoted values intentionally not inferred from the external 6EW6 datasheet.

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

1966 Tung Sol Electronic Tubes 1 of 4

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • HEATER VOLTAGE

    4.2 V

    Maximum Ratings | HEATER VOLTAGE 4.2 VOLTS

  • MAXIMUM SCREEN — SUPPLY VOLTAGE

    330 V

    Maximum Ratings | MAXIMUM SCREEN — SUPPLY VOLTAGE 330 VOLT$

  • MAXIMUM PLATE DISSIPATION

    3.1 W

    Maximum Ratings | MAXIMUM PLATE DISSIPATION 3.1 WATTS

  • MAXIMUM SCREEN DISSIPATION O.E)

    5 W

    Maximum Ratings | MAXIMUM SCREEN DISSIPATION O.E)5 WATTS

  • HEATER WARM— UP TIME (APPROX.) *

    11 s

    Maximum Ratings | HEATER WARM— UP TIME (APPROX.) * 11.0 SECONDS

Characteristic

  • HEATER VOLTAGE

    4.2 V

    ClassA | HEATER VOLTAGE 4.2 VOLTS

  • PLATE VOLTAGE

    125 V

    ClassA | PLATE VOLTAGE 125 VOLTS

  • SCREEN VOLTAGE

    125 V

    ClassA | SCREEN VOLTAGE 125 VOLTS

  • CATHODE —BIAS RESISTOR

    56 ohm

    ClassA | CATHODE —BIAS RESISTOR 56 OHMS

  • PLATE RESISTANCE (APPROX.) O

    2 Mohm

    ClassA | PLATE RESISTANCE (APPROX.) O.2 MEGOHMS

  • PLATE CURRENT

    11 mA

    ClassA | PLATE CURRENT 11 MA.

  • SCREEN CURRENT j'

    2 mA

    ClassA | SCREEN CURRENT j'.2 MA.

  • GRID #

    -3.5 V

    ClassA | GRID #1 VOLTAGE (APPROX.) Ib= 20 µAMPS. -3.5 VOLTS

  • GRID #

    2 V

    ClassA | GRID #2 VOLTS

  • GRID #

    2 mA

    ClassA | GRID #2 MILLIAMPERES

Data set 02

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Heater Voltage

    4.2 V

  • Heater Current

    600 mA

Data set 03

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Plate voltage

    125 V

    IFAmplifier

  • Grid 2 voltage

    125 V

    IFAmplifier

  • Grid 1 voltage

    -3.5 V

    IFAmplifier

  • Plate current

    11 mA

    IFAmplifier

  • Grid 2 current

    3.2 mA

    IFAmplifier

Characteristic

  • Plate resistance

    200000 ohm

    IFAmplifier

  • Transconductance

    14000 uS

    IFAmplifier

  • Heater warm-up time

    11 s

    ControlledWarmUp