cpi
|
4cx250B/ 8957
cpi | 4cW50,000J
4cx250Bc/8957
The 4CX250BC/8957 is especially recommend-
ed as a premium quality replacement for the
4CX250B/7203, in applications where long life and
consistent performance are of prime concern and
the closer heater voltage tolerance and increased
cathode warmup time are acceptable.
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
2.4 Amps
Grounded Grid
15.7 pf
4.5 pf
.04 pf
Grounded Grid
13.0 pf
4.5 pf
.01 pf
Forced Air
9 Pin Special
SK-600A
SK-606
---
2.46 in; 62.50 mm
1.64 in; 41.70
4 oz; 113 gm
type of service
RF amplifier up to 175 MHz
MaxiMuM Ratings
plate
Voltage
(Volts)
2,000
1,500
2,000
2,000
2,000
plate
current
(amps)
0.25
0.20
0.25
0.25
0.25
ypical OpeRatiOn
t
plate
current
(amps)
.250
.200
0.25
0.15
0.50
Drive
Output
power power
(Watts) (kiloWatts)
2.9
1.7
---
---
---
0.390
0.235
0.300
0.065
0.600
class of
Operation
c
c
aB1
aB1
aB1
plate
screen
Voltage Voltage
(Volts)
(Volts)
2,000
1,500
2,000
2,000
2,000
300
250
350
350
350
RF amplifier plate modulated up to 175 MHz
RF linear amplifier up to 175 MHz
RF linear amplifier up to 175 MHz (aM service)
aF amplifier or modulator
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
:
1(800) 414-8823.
fax
:
(650) 592-9988 |
email
:
powergrid@cpii.com
CPI [ COMMUNICATIONS & POWER INDUSTRIES, INC. ]
