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5866

Radiation- or forced-air-cooled high-frequency transmitting triode for VHF RF power amplification. Rated for 135 W plate dissipation, with published operation producing about 390 W output at frequencies to approximately 150 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 5.4 A

Description

5866 is listed in the supplied Amperex material as a radiation/forced-air-cooled HF triode. Published ratings and characteristics were captured from the supplied 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: 6.3 V
Nominal heater current: 5.4 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: 25
Max plate dissipation: 135 W

Promoted only where the locked section schema has a direct semantic match; device-specific thyratron, magnetron, transmitting-tube, ignitron, and broadband data are retained in TUBE_SECTION_PARAMETER.

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

1958 Amperex Industrial

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Plate voltage
2500 V
RFPowerAmplifier
Plate current
200 mA
RFPowerAmplifier
Power output
390 W
RFPowerAmplifier
Control-grid voltage
-300 V
RFPowerAmplifier
Grid current
45 mA
RFPowerAmplifier
Maximum frequency at full input
150 MHz
RFPowerAmplifier
Maximum plate dissipation
135 W
RFPowerAmplifier

Characteristic

Amplification factor
25
RFPowerAmplifier

Capacitance

Grid-to-plate capacitance
5.5 pF
Section1
Grid-to-filament capacitance
5.8 pF
Section1
Plate-to-filament capacitance
0.1 pF
Section1

Data set 02

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Published classification
radiation/forced-air-cooled HF triode
Amperex power-tube description