Vt3cx2500f3 and vt3cx2500h3 electronic tubes are of cermet structure, thorium tungsten carbide cathode and forced air-cooled triode. Except that its filament and grid lead flexible electrode leads to the base, the rest are the same as vc-th5-6 electronic tube. The maximum operating frequency of the tube is 75MHz, which is mainly used for industrial RF heating equipment.
Vt3cx2500f3 electronic tube can be interchanged with 3cx2500f3 electronic tube produced by American eimac company, and vt3cx2500h3 electronic tube can be interchanged with 3cx2500h3 electronic tube produced by American eimac company.
Specifications︰
Characteristic parameters
Filament voltage 7.5V Filament current 51.5A
transconductance 20mA/V Amplification factor twenty
Inter electrode capacitance (cathode grounding) input 35.0pF
output 0.9pF
Cross circuit capacitance 20.0pF
Installation method Vertical / anode up or down Cooling mode Forced air cooling
Maximum temperature of anode outer surface and sealing joint 250℃ Maximum length 468.30mm
Maximum diameter 105.56mm weight 3.4kg
Advantages︰
Audio power amplifier or class AB, class B modulator limit operation data
Anode voltage
6000Vdc
Anode current
2.5Adc
Anode dissipation
4000W
Grid dissipation
150W
Grid voltage
-1000Vdc
Typical operating condition (double tube, unless otherwise specified, positive rotating wave)
Positive pressure
four thousand
five thousand
six thousand
Vdc
Grid voltage
-150
-190
-240
Vdc
Zero signal positive current
zero point six
zero point five
zero point four
Adc
Maximum signal positive current
four
three point two
three
Adc
Effective anode load
two thousand and two hundred
three thousand and six hundred
four thousand six hundred and fifty
Ω
Audio grid input voltage (single)
three hundred and forty
three hundred and sixty
three hundred and ninety
V
Maximum signal peak excitation power
three hundred and forty
two hundred and thirty
two hundred and twenty-five
W
Maximum signal rated excitation power
one hundred and seventy
one hundred and fifteen
one hundred and thirteen
W
Maximum signal anode output power
eleven
eleven
thirteen
kW
Anode modulated RF amplifier class C (telephone call state) limit operation data
Anode voltage
5500Vdc
Anode current
2.0Adc
Anode dissipation
2670W
Grid dissipation
150W
Grid voltage
-1000Vdc
Typical operating state (frequency lower than 30MHz)
Positive pressure
four thousand
four thousand and five hundred
five thousand
Vdc
Yang current
one point six seven
one point four seven
one point two five
Adc
Grid voltage
-450
-500
-550
Vdc
Grid current
one hundred and eighty
one hundred and forty
one hundred and fifty
mAdc
Peak RF grid input voltage
six hundred and eighty-five
seven hundred and fifteen
seven hundred and sixty
V
Excitation power
one hundred and twenty-five
one hundred
one hundred and fifteen
W
Grid dissipation
forty-three
thirty
thirty-two
W
Anode input
six thousand six hundred and seventy
six thousand six hundred and fifteen
six thousand two hundred and fifty
W
Anode dissipation
one thousand six hundred and seventy
one thousand three hundred and fifteen
nine hundred and fifty
W
Anode output
five thousand
five thousand and three hundred
five thousand and three hundred
W
RF power amplifier or oscillator limit operation data
Anode voltage
6000Vdc
Anode current
2.5Adc
Anode dissipation
4000W
Grid voltage
-1000Vdc
Grid current
0.4Adc
Grid dissipation
150W
Typical operating state (frequency lower than 30MHz)
Positive pressure
four
five
six
kVdc
Yang current
two point five
two point five
two point zero eight
Adc
Grid voltage
-300
-450
-500
Vdc
Grid current
two hundred and forty-five
two hundred and sixty-five
one hundred and eighty
mAdc
Peak RF grid input voltage
five hundred and eighty
seven hundred and fifty
seven hundred and sixty-five
V
excitation
one hundred and forty-two
one hundred and ninety-seven
one hundred and thirty-six
W
Grid loss
sixty-eight
seventy-eight
forty-six
W
Anode input
ten
twelve point five
twelve point five
kW
Anode output
seven point five
ten
ten
kW
Yang depletion
two point five
two point five
two point five
kW
