4pR60c / 8252W
cꢌaRacteRistics
Plate Dissipation (Max.)
Screen Dissipation (Max.)
Grid Dissipation (Max.)
Frequency for Max. rating (CW)
Amplification Factor
Filament/Cathode
Voltage
The 4PR60C/8252W is intended for pulse modu-
lator service in circuits employing inductive or
resistive loads. This tube unilaterally replaces the
715C, the 5D21 and the 4PR60B/8252. The internal
structure of the tube has been strengthened to
minimize the effects of shock and vibration. The
4PR60C/8252W has a maximum plate dissipation
rating of 60 watts, and is cooled by radiation and
convection, and delivers pulse output power in the
region of 300 kW with less than one kW of pulse
driving power.
60 Watts
8 Watts
1 Watts
N/A
N/A
Oxide Coated
26.0 Volts
2.1 Amps
Grounded Cathode
43.0 pf
Current
Capacitance
Input
Output
8.5 pf
Feedthrough
Capacitance
Input
1.5 pf
N/A
N/A
Output
N/A
Feedthrough
Cooling
N/A
Radiation and Forced Air
4-Pin Special
N/A
Base
Air Socket
Air Chimney
Boiler
N/A
N/A
Length
6.00 in; 152.40 mm
3.06 in; 77.90 mm
12 oz; 0.34 kg
Diameter
Weight
MaxiMuM Ratings
typical OpeRatiOn
cꢀꢁꢂꢂ of
tꢃꢄꢅ of sꢅrvꢆꢇꢅ
pꢀꢁꢈꢅ
pꢀꢁꢈꢅ
pꢀꢁꢈꢅ
sꢇrꢅꢅꢉ
pꢀꢁꢈꢅ
Drꢆvꢅ
powꢅr
Oꢊꢈꢄꢊꢈ
powꢅr
Oꢄꢅrꢁꢈꢆoꢉ
Voꢀꢈꢁꢋꢅ cꢊrrꢅꢉꢈ
Voꢀꢈꢁꢋꢅ Voꢀꢈꢁꢋꢅ cꢊrrꢅꢉꢈ
(Voꢀꢈꢂ)
20,000
(amꢄꢂ)
18.0
(Voꢀꢈꢂ)
(Voꢀꢈꢂ)
(amꢄꢂ) (Wꢁꢈꢈꢂ) (kꢆꢀoWꢁꢈꢈꢂ)
---
swꢆꢈꢇh tꢊbꢅ or puꢀꢂꢅ Modꢊꢀꢁꢈor
20 000
1,250
18.0 --- 337.0
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 ꢆꢉformꢁꢈꢆoꢉ on this and other CPI MPP products, visit our website at: www.ꢇꢄꢆꢆ.ꢇom,
or contact: CPI Microwave Products Division, Eimac Operation,607 Hansen Way, Palo Alto, CA 94303
t e l e p h o n e : 1(800) 414-8823. f a x : (650) 592-9988 | e m a il : powergrid@cpii.com
