MaxiMuM Ratings

typical OpeRatiOn

class of

type of service

plate

plate

plate

screen

plate

Drive

Output

Operation

Voltage

current

Voltage

Voltage

current

power

power

(Volts)

(amps)

(Volts)

(Volts)

(amps)

(Watts) (kiloWatts)

---

switch tube or pulse Modulator

20,000

18.0

20 000

1,250

18.0

---

337.0

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.

4pR60c / 8252W

or contact: CPI Microwave Products Division, Eimac Operation,607 Hansen Way, Palo Alto, CA 94303

telephone

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.

chaRacteRistics

Plate Dissipation (Max.)

60 Watts

Screen Dissipation (Max.)

8 Watts

Grid Dissipation (Max.)

1 Watts

Frequency for Max. rating (CW)

N/A

Amplification Factor

N/A

Filament/Cathode

Oxide Coated

Voltage

26.0 Volts

Current

2.1 Amps

Capacitance

Grounded Cathode

Input

43.0 pf

Output

8.5 pf

Feedthrough

1.5 pf

Capacitance

N/A

Input

N/A

Output

N/A

Feedthrough

N/A

Cooling

Radiation and Forced Air

Base

4-Pin Special

Air Socket

N/A

Air Chimney

N/A

Boiler

N/A

Length

6.00 in; 152.40 mm

Diameter

3.06 in; 77.90 mm

Weight

12 oz; 0.34 kg