6696A

Very-high-power water-cooled transmitting triode for Class C RF and Class AB audio-frequency service. Tens of kilowatts of plate dissipation and published RF output in the multi-tens-of-kilowatts range suit major fixed transmitter installations.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 13 V / 205 A

Description

Ceramic-insulated water-cooled high-power triode.

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: 13 V
Nominal heater current: 205 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: 20
Max plate voltage: 16000 V
Max plate dissipation: 60000 W
Max grid dissipation: 1000 W
Max cathode current: 11 A

Promoted fields populated from published ratings/characteristics; additional published values 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

1962 Eimac

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Filament Current
190 A to 220 A

Other

Starting Filament Current Maximum
800 A
Frequency for Maximum Ratings
40 MHz
Maximum DC Plate Current RF Class C
11 A
ClassC
Maximum DC Grid Voltage
-3200 V
Maximum DC Grid Current
2 A
ClassC
Typical RF Plate Voltage
15 kV
ClassC
Typical RF Plate Output Power
80 kW
ClassC
Typical AF Plate Output Power
152 kW
ClassAB;TwoTubes

Capacitance

Grid-Plate Capacitance
50 to 57 pF
Grid-Filament Capacitance
65 to 85 pF
Plate-Filament Capacitance
2 to 3.2 pF

Data set 02

1965 Eimac Tube Manual

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Filament Voltage
13 V
Filament Current
190-220 A
Filament Starting Current
800 A
Amplification Factor
20
Typical RF Plate Output Power
80 kW

Capacitance

Grid-Plate Capacitance
47-57 pF
Grid-Filament Capacitance
65-85 pF
Plate-Filament Capacitance
2.0-3.2 pF

Other

Frequency for Maximum Ratings
40 MHz
Maximum DC Plate Voltage
16000 V
Maximum Plate Dissipation
60000 W
Maximum Grid Dissipation
1000 W