3CX6000A7

High-performance ceramic/metal power triode for zero-bias RF amplifier and modulator service. Its mesh filament improves rigidity and VHF performance, while 6 kW plate dissipation supports useful RF output around 8–12 kW.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 7 V / 78 A

Description

The Svetlana™ 3CX6000A7 / YU148 is a high-performance ceramic/ metal power triode designed for use in zero-bias, RF amplifier service, and modulator service. A modern mesh filament is used, replacing the old-fashioned hairpin construction. The improved mesh filament design ensures better mechanical rigidity and long lasting concentricity of the filament, providing enhanced linearity, less noise, reduced warm-up variation and longer life. The low-inductance, mesh- filament basket also forms a natural exten- sion of the cylindrical stem geometry into the active area, giving superior VHF performance. The Svetlana 3CX6000A7 / YU148 is manufactured in the Svetlana Electron SM Devices complex in St. Petersburg, Russia. Svetlana has achieved the improved performance described above with exact replacement compatibility with the 3CX6000A7 / YU148 manufactured in the Svetlana United States. ELECTRON DEVICES Svetlana 3CX6000A7 / YU148

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: 7 V
Nominal heater current: 78 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: 200
Max plate voltage: 7000 V
Max plate dissipation: 6000 W
Max grid dissipation: 225 W
Max cathode current: 3.5 A

Promoted maximum ratings and characteristics from source; additional published values retained as 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

199X Svetlana

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Current @
7 V
modulator service. A modern mesh filament
Input
42 pF
modulator service. A modern mesh filament
Output
24.5 pF
modulator service. A modern mesh filament
Feedback
0.28 pF
modulator service. A modern mesh filament

Other

DC Plate voltage
7000 V
Maximum Ratings
DC Plate current
3.5 A
Maximum Ratings
Plate dissipation
6000 W
Maximum Ratings
Grid dissipation
225 W
Maximum Ratings
(Frequencies to
110 MHz
Typical operation
Plate voltage 4800 5700
6000 V
Typical operation
Grid voltage 0 0
-100 V
Typical operation
Plate current 2.3 2.5
2.56 A
Typical operation
Grid current* 0.32 0.33
480 mA
Typical operation
Peak RF cathode voltage* 215 224
340 V
Typical operation
Calculated driving power* 500 600
800 W
Typical operation
Plate dissipation 3200 4100
3900 W
Typical operation
Useful output power 8000 10000
12000 W
Typical operation
below
250 ˚C
Typical operation
maintain these temperatures below
225 ˚C
Typical operation
with an inlet-air temperature of
50 ˚C
Typical operation
tabulated. At frequencies above
40 MHz
Typical operation