5770

Massive grounded-grid transmitting triode for extremely high-power RF service. Rated for 50 kW plate dissipation and 17 kV plate voltage, with published operation producing approximately 105 kW output and peak cathode current around 50 A.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 11 V / 285 A

Description

The 5770 is a high-power cooled triode. The supplied datasheet was processed for heater or filament data, maximum ratings, operating characteristics, capacitances, cooling/service conditions, and power-output data. Condition-specific transmitting ratings are retained in the section-parameter table.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: -
Nominal heater voltage: 11 V
Nominal heater current: 285 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

Triode

X-ray radiationInterelectrode capacitances

Amplification factor: 40
Max plate voltage: 17000 V
Max plate dissipation: 50000 W
Max cathode current: 50 A

water/air-cooled grounded-grid power triode

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

1971 RCA HB3 Binder 6 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Maximum DC Plate Voltage
17000 V
Water/forced-air-cooled grounded-grid service
Plate Dissipation
50 kW
Water/forced-air-cooled grounded-grid service
Typical DC Plate Voltage
17000 V
Water/forced-air-cooled grounded-grid service
Power Output
105 kW
Water/forced-air-cooled grounded-grid service
Peak Cathode Current
50 A
Water/forced-air-cooled grounded-grid service

Characteristics

Amplification Factor
40
Water/forced-air-cooled grounded-grid service
Grid-to-Plate Capacitance
53 pF
Water/forced-air-cooled grounded-grid service
Grid-to-Filament Capacitance
89 pF
Water/forced-air-cooled grounded-grid service
Plate-to-Filament Capacitance
1.2 pF
Water/forced-air-cooled grounded-grid service