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)

aB1

RF linear amplifier

2,400

0.25

2,000

350

0.29

---

0.350

aB1

RF linear amplifier aM service

2,000

0.25

2,000

400

0.17

4

0.65

aB1

aF amplifier or Modulator

2,000

0.25

2,000

350

0.50

---

0.595

The 8930 is electrically identical to the

4CX250R/7580W but the larger anode radiator as-

sembly allows higher dissipation with low air flow

and pressure drop characteristics. The tube has

rugged internal construction features for reliable

operation under heavy shock or vibration condi-

tions.

8930

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.)

350 Watts

Screen Dissipation (Max.)

12 Watts

Grid Dissipation (Max.)

2 Watts

Frequency for Max. rating (CW)

500 MHz

Amplification Factor

5

Filament/Cathode

Oxide Coataed

Voltage

6.0 Volts

Current

2.6 Amps

Capacitance

Grounded Cathode

Input

17.5 pf

Output

4.9 pf

Feedthrough

.03 pf

Capacitance

N/A

Input

N/A

Output

N/A

Feedthrough

N/A

Cooling

Forced Air

Base

9-Pin Special

Air Socket

SK-600A

Air Chimney

SK-646

Boiler

N/A

Length

2.46 in; 62.60 mm

Diameter

2.08 in; 52.80 mm

Weight

5.5 oz; 156 gm