4CX250R Datasheet, PDF (1/1 Pages) Communications & Power Industries, Inc. – RF linear Amplifier

4CX250R/7580W
The 4CX250R/7580W is designed specifically for
use in Class AB1 linear amplifiers where shock
and/or vibration preclude the use of non-rug-
gedized tube types. The 4CX250R/7580W will
replace the 4CX250B in equipments where the
range of bias adjustment will tolerate this higher
purveyance tube and where tuning range can
compensate for the small differences in input
and output capacitances. The 4CX250R/7580W
will deliver more output in most linear amplifiers
which presently employ the 4CX250B and it will
operate with maximum rated plate and screen
voltage applied in euipments where shock and/or
vibration is experienced.
Characteristics
Plate Dissipation (Max.)
Screen Dissipation (Max.)
Grid Dissipation (Max.)
Frequency for Max. rating (CW)
Amplification Factor
Filament/Cathode
Voltage
Current
Capacitance
Input
Output
Feedthrough
Capacitance
Input
Output
Feedthrough
Cooling
Base
Air Socket
Air Chimney
Boiler
Length
Diameter
Weight
250 Watts
12 Watts
2 Watts
500 MHz
5
Oxide Coated
6.0 Volts
2.6 Amps
Grounded Cathode
17.5 pf
4.8 pf
.04 pf
---
--- pf
--- pf
--- pf
Forced Air
9 Pin Special
SK-600A
SK-606
---
2.46 in; 62.50 mm
1.64 in; 41.70 mm
4 oz; 113 gm
Class of
Operation
AB1
AB1
AB1
Maximum Ratings
Typical Operation
Type of Service
RF linear Amplifier
RF linear amplifier (AM service)
AF amplifier or modulator
Plate
Voltage
(Volts)
Plate
Current
(Amps)
2,000
0.25
2,000
0.25
2,000
0.25
Plate
Voltage
(Volts)
Screen
Voltage
(Volts)
Plate
Current
(Amps)
Drive Output
Power Power
(Watts) (kiloWatts)
2,000
400
0.25
---
0.3
2,000
400
0.17
---
0.1
2,000
350
0.50
---
0.595
The values listed above represent specified limits for the product and are subject to change. The data should be used for basic
information only. Formal, controlled specifications may be obtained from CPI for use in equipment design.
For information on this and other CPI products, visit our website at: www.cpii.com,
or contact: CPI MPP Division, Eimac Operations, 607 Hansen Way, Palo Alto, CA 94303
telephone: [phone]. fax: [phone] | email: [e-mail]