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

803

Thoriated-tungsten transmitting power pentode for RF amplification and oscillator service to approximately 20 MHz.

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

Description

Thoriated-tungsten power pentode for RF power-amplifier and oscillator service, usable with full input to about 20 MHz.

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
10 V
Nominal heater current
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

Pentode

X-ray radiationInterelectrode capacitances
Transconductance
0.004 S
Max plate voltage
2000 V
Max screen voltage
500 V
Max plate dissipation
125 W
Max cathode current
175 mA

Published ratings and characteristics from source sheet.

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 RCA Transmitting Tubes

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • as high as

    20 MHz

    as high as 20 megacycles. The maximum rated plate dissipation of the tube is

  • D-C Plate Voltage

    2000 V

    D-C Plate Voltage . . 2000 max. Volts

  • D-C Suppressor Voltage (Grid No. 3)

    500 V

    D-C Suppressor Voltage (Grid No. 3) 500 max. Volts

  • Screen Input

    20 W

    Screen Input- .. 20 max. Watts

  • Plate Dissipation

    125 W

    Plate Dissipation .. .... .. --- -- 125 max. Watts

  • D-C Plate Voltage -- 1250 1500

    2000 V

    D-C Plate Voltage -- 1250 1500 2000 Volts

  • D-C Suppressor Voltage .-.. 40 40

    40 V

    D-C Suppressor Voltage .-.. 40 40 40 Volts

  • D-C Plate Current --.- 130 110

    80 mA

    D-C Plate Current --.- 130 110 80 Milliamperes

  • Power Output (Approx.)-- 52 53

    33 W

    Power Output (Approx.)-- 52 53 33 Watts

  • D-C Plate Voltage

    2000 V

    D-C Plate Voltage- 2000 max. Volts

  • Screen Input

    30 W

    Screen Input....... 30 max. Watts

  • Peak R-F Grid Voltage ... 200 190

    170 V

    Peak R-F Grid Voltage ... 200 190 170 Volts

  • Peak A'F Suppressor Voltage_ no 130

    150 V

    Peak A'F Suppressor Voltage_ no 130 150 Volts

  • Screen Resistor... 13000 17000

    35000 Ω

    Screen Resistor... 13000 17000 35000 Ohms

  • Grid Resistor --- 5000 5000

    7000 Ω

    Grid Resistor --- 5000 5000 7000 Ohms

  • Driving Power (Approx.) - 4 3.5

    2.5 W

    Driving Power (Approx.) - 4 3.5 2.5 Watts

  • D-C Plate Voltage

    2000 V

    D-C Plate Voltage. .. 2000 max. Volts

  • D-C Plate Voltage ... 1250 1500

    2000 V

    D-C Plate Voltage ... 1250 1500 2000 Volts

  • Peak R'F Grid Voltage ...... 160 130

    100 V

    Peak R'F Grid Voltage ...... 160 130 100 Volts

  • Peak A'F Grid Voltage . 75 65

    50 V

    Peak A'F Grid Voltage . 75 65 50 Volts

  • D-C Grid Current (Approx.) - 8 6

    4 mA

    D-C Grid Current (Approx.) - 8 6 4 Milliamperes

  • Driving Power (Approx. )t .. 4 3

    2 W

    Driving Power (Approx. )t .. 4 3 2 Watts

  • Power Output (Approx.) . 52 53

    53 W

    Power Output (Approx.) . 52 53 53 Watts

  • D-C Plate Voltage ___’ 1600 max

    1600 V

    D-C Plate Voltage ___’ 1600 max. 1600 max. Volts

  • D-C Screen Voltage*** . 500 max

    500 V

    D-C Screen Voltage*** . 500 max. 500 max. Volts

  • D-C Grid Volt. (Grid No. 1) -500 max

    -500 V

    D-C Grid Volt. (Grid No. 1) -500 max. -500 max. Volts

  • D'C Plate Current .. 160 max

    160 mA

    D'C Plate Current .. 160 max. 160 max. Milliamperes

  • D-C Grid Current.-.. 50 max

    50 mA

    D-C Grid Current.-.. 50 max. 50 max. Milliamperes

  • Plate Input ... 250 max

    250 W

    Plate Input ... 250 max. 250 max. Watts

  • Screen Input .. 20 max

    30 W

    Screen Input .. 20 max. 30 max. Watts

  • Plate Dissipation_ 85 max

    85 W

    Plate Dissipation_ 85 max. 85 max. Watts

  • D-C Plate Voltage . 1250 1600 1250

    1600 V

    D-C Plate Voltage . 1250 1600 1250 1600 Volts

  • D-C Grid Current (Approx.) 20 20 45

    45 mA

    D-C Grid Current (Approx.) 20 20 45 45 Milliamperes

  • D-C Plate Voltage ... _ . 2000 max

    2000 V

    D-C Plate Voltage ... _ . 2000 max. 2000 max. Volts

  • D-C Screen Voltage.. 500 500 150

    150 V

    D-C Screen Voltage.. 500 500 150 150 Volts

  • Peak R-F Grid Voltage- 175 175 190

    190 V

    Peak R-F Grid Voltage- 175 175 190 190 Volts

  • D-C Plate Current .... 160 160 160

    160 mA

    D-C Plate Current .... 160 160 160 160 Milliamperes

  • D-C Grid Current (Approx.) 12 12 27

    26 mA

    D-C Grid Current (Approx.) 12 12 27 26 Milliamperes

  • Driving Power (Approx.) 2 2 4.4

    4.4 W

    Driving Power (Approx.) 2 2 4.4 4.4 Watts

  • each stated value of grid voltage should be decreased by

    7 V

    each stated value of grid voltage should be decreased by 7 volts and the circuit returns made to the

  • For high-frequency operation above

    20 MHz

    For high-frequency operation above 20 megacycles, see page 144.

Data set 02

1950 General Electric Transmitting Types

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Maximum full-rating frequency

    20 MHz

Application

  • Service

    RF amplifier / frequency multiplier / oscillator / modulator

Data set 03

1956 RCA Transmitting Tubes

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

  • Transconductance

    4000 µS

Other

  • Maximum Plate Voltage

    2000 V

  • Maximum Screen Voltage

    600 V

  • Maximum Plate Dissipation

    125 W

  • Maximum Cathode Current

    175 mA

  • Full-Input Operating Frequency Maximum

    20 MHz

  • Power Output

    23 W

    ClassC,RF

  • Typical Plate Voltage

    600 V

    Representative published point

  • Typical Plate Current

    55 mA

    Representative published point