41000A

High-power transmitting beam tetrode for RF amplifier and oscillator service, capable of multi-kilowatt output and full ratings to roughly 110 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: GIANT5
Base pins: -
Nominal heater: 7.5 V / 21 A

Description

High-power beam power transmitting tube for RF amplifier 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: -
Nominal heater voltage: 7.5 V
Nominal heater current: 21 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

Beam Power

X-ray radiationInterelectrode capacitances

Transconductance: 0.01 S
Amplification factor: 7
Max plate voltage: 6000 V
Max screen voltage: 1000 V
Max plate dissipation: 1000 W
Max screen dissipation: 75 W
Max grid dissipation: 25 W

Promoted maximum ratings/characteristics populated from published headings; service-specific values retained in parameters.

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

1956 RCA Transmitting Tubes

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Application

Application
High-power RF amplifier / oscillator

Data set 02

1962 Eimac

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

plate dissipation rating of
1000 W
plate dissipation rating of 1000 watts. Intended for use as an amplifier,
rodes will deliver a useful output power of over
5000 W
rodes will deliver a useful output power of over 5000 watts.
watts of peak driving power, two of these tubes will deliver
3900 W
watts of peak driving power, two of these tubes will deliver 3900 watts of
Voltage - - - - - - - -«
7.5 V
Voltage - - - - - - - -« - - - . 7.5 volts
Current [1]
20 A
Current - - - - - - - - - - - - 20.0 22.7 amperes
Current [2]
22.7 A
Current - - - - - - - - - - - - 20.0 22.7 amperes
Amplification Factor (Grid to Screen) [1]
6.1
Amplification Factor (Grid to Screen) - - - - - - 6.1 7.7
Amplification Factor (Grid to Screen) [2]
7.7
Amplification Factor (Grid to Screen) - - - - - - 6.1 7.7
Input S T T B T T [1]
23.8 pF
Input S T T B T T 23.8 324 uuf
Input S T T B T T [2]
324 pF
Input S T T B T T 23.8 324 uuf
Output - - - - - - =« - - = [1]
6.8
Output - - - - - - =« - - = - - 6.8 9.4 puuf
Output - - - - - - =« - - = [2]
9.4
Output - - - - - - =« - - = - - 6.8 9.4 puuf
Transconductance (I,= [1]
300 mA
Transconductance (I,=300 ma) - - - - - - - 10,000 pmhos
Transconductance (I,= [2]
10000 mA
Transconductance (I,=300 ma) - - - - - - - 10,000 pmhos
Highest Frequency for Maximum Ratings
110 MHz
Highest Frequency for Maximum Ratings - - - - - 110 MHz
DC PLATE VOLTAGE [1]
60 V
DC PLATE VOLTAGE - 60 00 VOLTS
DC PLATE VOLTAGE [2]
0 V
DC PLATE VOLTAGE - 60 00 VOLTS
DC SCREEN VOLTAGE [1]
10 V
DC SCREEN VOLTAGE - 10 00 VOLTS
DC SCREEN VOLTAGE [2]
0 V
DC SCREEN VOLTAGE - 10 00 VOLTS
DC GRID VOLTAGE [1]
-5 V
DC GRID VOLTAGE - - —5 00 VOLTS
DC GRID VOLTAGE [2]
0 V
DC GRID VOLTAGE - - —5 00 VOLTS
DC PLATE CURRENT
700 mA
DC PLATE CURRENT - - 700 MA
PLATE DISSIPATION
1000 W
PLATE DISSIPATION - 1000 WATTS
SCREEN DISSIPATION
75 W
SCREEN DISSIPATION - 75 WATTS
GRID DISSIPATION
25 W
GRID DISSIPATION - - 25 WATTS
one tube) DC Plate Voltage [1]
4000 V
one tube) DC Plate Voltage - - - - - - . 4000 5000 6000 volts
one tube) DC Plate Voltage [2]
5000 V
one tube) DC Plate Voltage - - - - - - . 4000 5000 6000 volts
one tube) DC Plate Voltage [3]
6000 V
one tube) DC Plate Voltage - - - - - - . 4000 5000 6000 volts
DC Plate Voltage [1]
3000 V
DC Plate Voltage - - - - - - 3000 4000 5000 6000 volts DC Screen Voltage L 450 500 500 volts
DC Plate Voltage [2]
4000 V
DC Plate Voltage - - - - - - 3000 4000 5000 6000 volts DC Screen Voltage L 450 500 500 volts
DC Plate Voltage [3]
5000 V
DC Plate Voltage - - - - - - 3000 4000 5000 6000 volts DC Screen Voltage L 450 500 500 volts
DC Plate Voltage [4]
6000 V
DC Plate Voltage - - - - - - 3000 4000 5000 6000 volts DC Screen Voltage L 450 500 500 volts
DC Plate Voltage [5]
450 V
DC Plate Voltage - - - - - - 3000 4000 5000 6000 volts DC Screen Voltage L 450 500 500 volts
DC Plate Voltage [6]
500 V
DC Plate Voltage - - - - - - 3000 4000 5000 6000 volts DC Screen Voltage L 450 500 500 volts
DC Plate Voltage [7]
500 V
DC Plate Voltage - - - - - - 3000 4000 5000 6000 volts DC Screen Voltage L 450 500 500 volts
DC Screen Voltage - e e e [1]
500 V
DC Screen Voltage - e e e . 500 500 500 500 volts DC Grid Voltage - - - - . . - —150 -—160 —180 volts
DC Screen Voltage - e e e [2]
500 V
DC Screen Voltage - e e e . 500 500 500 500 volts DC Grid Voltage - - - - . . - —150 -—160 —180 volts
DC Screen Voltage - e e e [3]
500 V
DC Screen Voltage - e e e . 500 500 500 500 volts DC Grid Voltage - - - - . . - —150 -—160 —180 volts
DC Screen Voltage - e e e [4]
500 V
DC Screen Voltage - e e e . 500 500 500 500 volts DC Grid Voltage - - - - . . - —150 -—160 —180 volts
DC Screen Voltage - e e e [5]
-150 V
DC Screen Voltage - e e e . 500 500 500 500 volts DC Grid Voltage - - - - . . - —150 -—160 —180 volts
DC Screen Voltage - e e e [6]
-160 V
DC Screen Voltage - e e e . 500 500 500 500 volts DC Grid Voltage - - - - . . - —150 -—160 —180 volts
DC Screen Voltage - e e e [7]
-180 V
DC Screen Voltage - e e e . 500 500 500 500 volts DC Grid Voltage - - - - . . - —150 -—160 —180 volts
DC Grid Voltage [1]
-150 V
DC Grid Voltage - - - - - . —150 =150 —200 —200 volts DOC Plate Cyrrent - - - .- - . . 1.15 1.25 1.25 amps
DC Grid Voltage [2]
150 V
DC Grid Voltage - - - - - . —150 =150 —200 —200 volts DOC Plate Cyrrent - - - .- - . . 1.15 1.25 1.25 amps
DC Grid Voltage [3]
-200 V
DC Grid Voltage - - - - - . —150 =150 —200 —200 volts DOC Plate Cyrrent - - - .- - . . 1.15 1.25 1.25 amps
DC Grid Voltage [4]
-200 V
DC Grid Voltage - - - - - . —150 =150 —200 —200 volts DOC Plate Cyrrent - - - .- - . . 1.15 1.25 1.25 amps
DC Grid Voltage [5]
1.15 V
DC Grid Voltage - - - - - . —150 =150 —200 —200 volts DOC Plate Cyrrent - - - .- - . . 1.15 1.25 1.25 amps
DC Grid Voltage [6]
1.25 V
DC Grid Voltage - - - - - . —150 =150 —200 —200 volts DOC Plate Cyrrent - - - .- - . . 1.15 1.25 1.25 amps
DC Grid Voltage [7]
1.25 V
DC Grid Voltage - - - - - . —150 =150 —200 —200 volts DOC Plate Cyrrent - - - .- - . . 1.15 1.25 1.25 amps
DC Plate Current - - - - =« [1]
700 mA
DC Plate Current - - - - =« - 700 700 700 ma DC Screen Current N L 280 240 250 ma
DC Plate Current - - - - =« [2]
700 mA
DC Plate Current - - - - =« - 700 700 700 ma DC Screen Current N L 280 240 250 ma
DC Plate Current - - - - =« [3]
700 mA
DC Plate Current - - - - =« - 700 700 700 ma DC Screen Current N L 280 240 250 ma
DC Plate Current - - - - =« [4]
280 mA
DC Plate Current - - - - =« - 700 700 700 ma DC Screen Current N L 280 240 250 ma
DC Plate Current - - - - =« [5]
240 mA
DC Plate Current - - - - =« - 700 700 700 ma DC Screen Current N L 280 240 250 ma
DC Plate Current - - - - =« [6]
250 mA
DC Plate Current - - - - =« - 700 700 700 ma DC Screen Current N L 280 240 250 ma
DC Screen Current - -« [1]
146 mA
DC Screen Current - -« - - 146 140 ma DC Grid Current - - - - e - 80 80 100 ma
DC Screen Current - -« [2]
140 mA
DC Screen Current - -« - - 146 140 ma DC Grid Current - - - - e - 80 80 100 ma
DC Screen Current - -« [3]
80 mA
DC Screen Current - -« - - 146 140 ma DC Grid Current - - - - e - 80 80 100 ma
DC Screen Current - -« [4]
80 mA
DC Screen Current - -« - - 146 140 ma DC Grid Current - - - - e - 80 80 100 ma
DC Screen Current - -« [5]
100 mA
DC Screen Current - -« - - 146 140 ma DC Grid Current - - - - e - 80 80 100 ma
DC Grid Current - - - - .« [1]
38 mA
DC Grid Current - - - - .« . 38 42 ma Screen Dissipation (per 1ube) - - - - 63 60 63 watts
DC Grid Current - - - - .« [2]
42 mA
DC Grid Current - - - - .« . 38 42 ma Screen Dissipation (per 1ube) - - - - 63 60 63 watts
DC Grid Current - - - - .« [3]
1 mA
DC Grid Current - - - - .« . 38 42 ma Screen Dissipation (per 1ube) - - - - 63 60 63 watts
DC Grid Current - - - - .« [4]
63 mA
DC Grid Current - - - - .« . 38 42 ma Screen Dissipation (per 1ube) - - - - 63 60 63 watts
DC Grid Current - - - - .« [5]
60 mA
DC Grid Current - - - - .« . 38 42 ma Screen Dissipation (per 1ube) - - - - 63 60 63 watts
DC Grid Current - - - - .« [6]
63 mA
DC Grid Current - - - - .« . 38 42 ma Screen Dissipation (per 1ube) - - - - 63 60 63 watts
Screen Dissipation B [1]
73 W
Screen Dissipation B 73 70 watts Driving Power (approx.) - - - - - 350 400 400 watts
Screen Dissipation B [2]
70 W
Screen Dissipation B 73 70 watts Driving Power (approx.) - - - - - 350 400 400 watts
Screen Dissipation B [3]
350 W
Screen Dissipation B 73 70 watts Driving Power (approx.) - - - - - 350 400 400 watts
Screen Dissipation B [4]
400 W
Screen Dissipation B 73 70 watts Driving Power (approx.) - - - - - 350 400 400 watts
Screen Dissipation B [5]
400 W
Screen Dissipation B 73 70 watts Driving Power (approx.) - - - - - 350 400 400 watts
Grid Dissipation - - e e [1]
5 W
Grid Dissipation - - e e . 5 6 watts Plate Input Power D L - 4600 6250 7500 watts
Grid Dissipation - - e e [2]
6 W
Grid Dissipation - - e e . 5 6 watts Plate Input Power D L - 4600 6250 7500 watts
Grid Dissipation - - e e [3]
4600 W
Grid Dissipation - - e e . 5 6 watts Plate Input Power D L - 4600 6250 7500 watts
Grid Dissipation - - e e [4]
6250 W
Grid Dissipation - - e e . 5 6 watts Plate Input Power D L - 4600 6250 7500 watts
Grid Dissipation - - e e [5]
7500 W
Grid Dissipation - - e e . 5 6 watts Plate Input Power D L - 4600 6250 7500 watts
Peak RF Grid Input Voltage (approx.) [1]
290 V
Peak RF Grid Input Voltage (approx.) - 290 350 volts Plate Dissipation (per tube) - - - - 650 850 900 watts
Peak RF Grid Input Voltage (approx.) [2]
350 V
Peak RF Grid Input Voltage (approx.) - 290 350 volts Plate Dissipation (per tube) - - - - 650 850 900 watts
Peak RF Grid Input Voltage (approx.) [3]
650 V
Peak RF Grid Input Voltage (approx.) - 290 350 volts Plate Dissipation (per tube) - - - - 650 850 900 watts
Peak RF Grid Input Voltage (approx.) [4]
850 V
Peak RF Grid Input Voltage (approx.) - 290 350 volts Plate Dissipation (per tube) - - - - 650 850 900 watts
Peak RF Grid Input Voltage (approx.) [5]
900 V
Peak RF Grid Input Voltage (approx.) - 290 350 volts Plate Dissipation (per tube) - - - - 650 850 900 watts
Driving Power (approx.)* - - - - n [1]
15 W
Driving Power (approx.)* - - - - n 15 watts Useful Output Power - - - . - . 3000 4200 5200 watts

Data set 03

1965 Penta Labs Power Tubes

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristic

Heater/filament voltage
7.5 V
Heater/filament current
21 A
Amplification factor
7
Transconductance
10000 uS

Other

Maximum plate voltage
4000 V
Maximum screen voltage
800 V
Maximum plate dissipation
1000 W
Maximum control-grid dissipation
25 W
Source language
English
Maximum frequency for full ratings
110 MHz
Plate dissipation rating
1000 W

Capacitance

Grid-plate capacitance
0.25 pF
Input capacitance
28 pF
Output capacitance
8.1 pF

Application

Primary application
Beam-power tetrode with 1000 W plate dissipation for RF and audio amplifier/modulator service.

Construction

Cooling
Forced air
Electrode structure
Tetrode