(800) 737-2787 (RF Parts)
(770) 614-7443 (Diamond)
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435 S. Pacific St.
San Marcos, CA 92078
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4CX250B-AX Tube

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$159.00
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Quick Overview

4CX250B has a maximum plate dissipation rating of 250 watts and a maximum input-power rating of 500 watts. The 4CX250B is designed to operate with a heater voltage of 6.0 volts.

Details

4CX250B has a maximum plate dissipation rating of 250 watts and a maximum input-power rating of 500 watts. The 4CX250B is designed to operate with a heater voltage of 6.0 volts.

 

Features

Units

Values

Filament

 

Oxide-coated Unipotential

Cooling

 

Forced Air

Frequency
(Max. Ratings)

MHz

500

Plate Voltage

kV

6.0

Plate Current

A

2.6

Output Power

kW

0.25

Type

 

Tetrodes


CHARACTERISTICS
 
Cathode
Oxide-coated Unipotential
Cathode Voltage
6.0V
Cathode Current
2.6A
Capacitances
(Gnd.Cath. Connection)
Input
15.7pF
Output
4.5pF
Feed-through
0.04pF
Capacitances
(Gnd.Grid. Connection)
Input 13.0pF
Output
4.5pF
Feed-through
0.01pF
Amplification Factor
5
Screen Dissipation (Max.)
12W
Plate Dissipation (Max.)
250W
Grid Dissipation (Max.)
2W
Recommended Air-System Socket
SK-600A
Recommended Air Chimney
SK-606
Frequency for Max. Ratings(CW)
500MHz
Base
9-Pin Special
Cooling
Forced Air
Maximum Seal&Anode Core Temperature
250℃
Weight(approximate)
113g
Operating Position
Any

 

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)
Screen
Voltage
(volts)
C
RF Amplifier
Up to 175MHz
2000
  0.25
2000
0.25
2.9
390
300
C
RF Amplifier Plate Modulated Up to 175MHz
1500
0.20
1500
0.20
1.7
235
250
AB1
RF Linear Amplifier Up to 175MHz
2000
0.25
2000
0.25
-
300
350
AB1
RF Linear Amplifier(AM Service) Up to 175MHz
2000
0.25
2000
0.15
-
65+
350
AB1
AF Amplifier or Modulator
2000
0.25
2000
  0.50*
-
600*
350
*Two tubes
+Carrier power

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