typicalOpeRatiOn

typeofservice

plate

plate

plate

screen

plate

Drive

Output

Operation

Voltage current

Voltage Voltage current

power

power

(Volts)

(amps)

(Volts)

(Volts)

(amps) (Watts) (kiloWatts)

c

industrialOscillator

10,000

2.2

8,000

-700

1.0

100

6.1

c

industrialOscillator

10,000

2.2

9,000

-750

2.0

240

13.2

c

platemodulatedRFamplifier(telephony)

8,000

1.8

6,000

-800

1.25

270

5.9

The ML-6421F and 6421F are medium-Mu triodes

used in AM broadcast and industrial heating

applications. The air-cooled anode is rated at 10

kilowatts.

Ml-6421F/6421F

or contact: CPI MPP 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.)

10,000 Watts

Screen Dissipation (Max.)

N/A

Grid Dissipation (Max.)

375 Watts

Frequency for Max. rating (CW)

30 MHz

Amplification Factor

20

Filament/Cathode

Thoriated Tungsten

Voltage

7.0 Volts

Current

85 Amps

Capacitance

Grounded Cathode

Input

30 pf

Output

2.0 pf

Cgp

19 pf

Capacitance

N/A

Input

pf

Output

pf

Feedthrough

pf

Cooling

Water and Forced Air

Base

Special

Air Socket

Air Chimney

N/A

Boiler

N/A

Length

14.5 in; 36.8 cm

Diameter

8.25 in; 21 cm

Weight

30 lb; 13.6 kg