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Power - Pentode (NOT beam) ·Pentode

E443N

Power/output pentode designed for audio-frequency power amplification in single-ended or push-pull output stages.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B4
Base pins
4
Nominal heater
4 V / 1 A

Description

E443N is listed in the supplied valve table as a power pentode. Published operating and characteristic values were transcribed from its target row.

Socket description

European 4-pin base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B4
Base pins
4
Nominal heater voltage
4 V
Nominal heater current
1 A
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
40000 Ω
Transconductance
0.014 S
Amplification factor
10
Max plate voltage
400 V
Max screen voltage
200 V
Max plate dissipation
12 W

Published target-row operating and characteristic values reviewed.

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 Philips Miniwatt Vacuum Tube Catalog

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Plate voltage

    400 V

    Published European table row

  • Screen voltage

    200 V

    Published European table row

  • Plate current

    30 mA

    Published European table row

  • Power output

    5.4 W

    Published European table row

Characteristic

  • Plate resistance

    40000 ohm

    Published European table row

  • Transconductance

    14000 µS

    Published European table row

  • Amplification factor

    10

    Published European table row

  • Heater/filament voltage

    4 V

    Published European table row

  • Heater/filament current

    1 A

    Published European table row

Capacitance

  • Grid-to-plate capacitance

    20.2 pF

    Published European table row

Data set 02

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Normal plate current

    30 mA

  • Grid bias

    -40 V

Characteristic

  • Maximum transconductance

    3500 µS