Electron Tubes for Industrial, Broadcast and Ham Radio Applications

 

 

 

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3CX2500A3

 

 

 

 

The 3CX2500A3 high power triode is widely used in AM, FM and TV service. The 3CX2500A3 coaxial filament and grid terminals insure low-inductance connection to these electrodes and allow operation at maximum ratings through 110 MHz. The use of an external forced-air-cooled anode results in a compact structure with high power handling capability.

 

 

 

Filament

Thoriated Tungsten

Filament Voltage

7.5V

Filament Current

51.5A

Capacitances

(Gnd.Kath. Connection)

Input

35.0pF

Output

0.9pF

Feed-through

20.0pF

Amplification Factor

20

Plate Dissipation (Max.)

4000W

Grid Dissipation (Max.)

150W

Frequency for Max. Ratings (CW)

110MHz

Transconductance

20000umhos

Base

Coaxial

Cooling

Forced Air

Maximum Seal&Anode Core Temperature

250℃

Weight (approximate)

2.8kg

Operating Position

Vertical, base up or down

 

 

 

Class of Operation

Type of Service

Max. Ratings

TYPICAL OPERATION

Plate Voltage

(V)

Plate Current

(A)

Plate Voltage

(V)

Plate Current

(A)

Drive Power

(W)

Output Power

(W)

C

RF Industrial

Oscillator or Amplifier

6000

2.5

6000

2.1

136

10000

C

Grid Driven RF Amplifier

6000

2.5

6000

2.1

136

10000

C

Grid Driven RF Amplifier Plate Modulated

5500

2.0

5000

1.3

115

5300

AB

Grid Driven AF Amplifier or Modulator

6000

2.5

6000

3.0*

113

13000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GREENSTONE USA
Copyright © 2001 GREENSTONE USA All rights reserved.
Revised: October 20, 2010