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Power - Tetrode (NOT beam) (over 1000V 100W) ·Tetrode

4400A

Forced-air-cooled transmitting tetrode designed for RF power amplification, oscillation, modulation, FM service, and high-power audio-frequency amplifier applications.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
GIANT5
Base pins
5
Nominal heater
5 V / 14.5 A

Description

Radiation/forced-air-cooled transmitting tetrode for RF power-amplifier, modulator, and oscillator service.

Socket description

Giant 5-contact base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
GIANT5
Base pins
5
Nominal heater voltage
5 V
Nominal heater current
14.5 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

Tetrode

X-ray radiationInterelectrode capacitances
Transconductance
0.004 S
Amplification factor
5.1
Max plate voltage
4000 V
Max screen voltage
800 V
Max plate dissipation
400 W
Max screen dissipation
35 W
Max grid dissipation
10 W
Max cathode current
350 mA

Highest applicable published rating promoted; service-specific CW, RF, audio, industrial, and pulse limits retained as 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

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Plate voltage

    4000 V

    RFPowerAmplifier

  • Plate current

    350 mA

    RFPowerAmplifier

  • Power output

    1100 W

    RFPowerAmplifier

  • Control-grid voltage

    -220 V

    RFPowerAmplifier

  • Grid current

    18 mA

    RFPowerAmplifier

  • Screen voltage

    500 V

    RFPowerAmplifier

  • Maximum frequency at full input

    75 MHz

    RFPowerAmplifier

Capacitance

  • Grid-to-plate capacitance

    0.12 pF

    Section1

  • Input capacitance

    12.5 pF

    Section1

  • Output capacitance

    4.7 pF

    Section1

Data set 02

1965 Eimac Tube Manual

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Grid-Plate Capacitance

    0.12 pF

  • Input Capacitance

    12.5 pF

  • Output Capacitance

    4.7 pF

  • Frequency Maximum

    110 MHz

  • Typical Plate Output Power

    630 W

  • Plate-Modulated Plate Voltage Maximum

    3200 V

  • AF Plate Voltage Maximum

    4000 V

Data set 03

1965 Penta Labs Power Tubes

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristic

  • Heater/filament voltage

    5 V

  • Heater/filament current

    14.5 A

  • Amplification factor

    5.1

  • Transconductance

    4000 uS

Other

  • Maximum plate voltage

    4000 V

  • Maximum screen voltage

    800 V

  • Maximum plate dissipation

    400 W

  • Maximum control-grid dissipation

    10 W

  • Source language

    English

  • Maximum frequency for full ratings

    110 MHz

  • FM service plate voltage

    3000 V

Capacitance

  • Grid-plate capacitance

    0.12 pF

  • Input capacitance

    12.5 pF

  • Output capacitance

    4.5 pF

Application

  • Primary application

    400 W power tetrode for RF amplifier, oscillator, modulator, and FM service.

Construction

  • Cooling

    Forced air

  • Electrode structure

    Tetrode

Data set 04

1971 RCA HB3 Binder 6 of 7

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Heater/filament voltage

    5 V

  • Heater/filament current

    14.5 A

  • Filament voltage

    5 V

  • Filament current

    14.5 A

  • Maximum plate voltage

    4000 V

    ClassAB

  • Maximum screen voltage

    800 V

    ClassAB

  • Maximum plate current

    350 mA

    ClassAB

  • Maximum screen input

    35 W

  • Maximum control-grid input

    10 W

  • Maximum plate dissipation

    400 W

Characteristic

  • Transconductance

    4000 uS

    Plate2500V;Screen500V;PlateCurrent100mA

  • Screen-to-control-grid mu factor

    5.1

Capacitance

  • Grid No.1-to-plate capacitance

    0.12 pF

  • Input capacitance

    13 pF

  • Output capacitance

    4.6 pF

Construction

  • Cooling method

    Forced air

Application

  • Application

    AF power amplifier / modulator and RF power amplifier