3CX2500F3/8251 

Widely used in AM, FM and TV service. 

 

Description
Maximum Ratings
Tube Numbering System
Warranty

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Description

Plate Dissipation ( Max ) 4000 watts
Grid Dissipation ( Max ) 150 watts
Frequency for Mas Ratings (CW) 75 watts
Cooling Forced Air
Filament Thoriated Tungsten
     Voltage 7.5 volts
     Current 51.5 amperes
Capacitances ( Gnd. Cath. Connection )
     Input 35.0 pF
     Output .9 pF
     Feed-through 20.0 pF
Amplification Factor 20
Base Flexible Leads
Maximum Seal and Anode Core Temperature 250o C
Maximum Length 18.44 in /  468.40 mm
Maximum Diameter 4.16 in / 105.70 mm
Weight ( approximate ) 7.5 lb / 3.4 kg
Operating Position Vertical, base up or down

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Maximum Ratings Typical Operation
Class of Operation Type of Sevice Plate Voltage (volts) Plate Current (amps) Plate Voltage (volts) Plate Current (amps) Drive Power (watts) Output Power (watts)
C RF Industrial Oscillator  6000 2.5 6000 2.1 136 10,000
C Grid Driven RF Amplifier 6000 2.5 6000 2.1 136 10,000
C Grid Driven RF Amplifier Plate Modulated 5500 2.0 5000 1.3 115 5,300
AB Grid Driven AF Amplifier or Modulator (two tubes) 6000 2.5 6000 3.0 113 13,000

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