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Quick Details

Place of Origin:
Brand Name: Hertz
Model Number: FD911S&FD911SA
Package Type: Throught Hole
Nominal Frequency:
Frequency Tolerance:
Load Capacitance:
Operating Temperature:
Supply Voltage:
Dimensions:

Specifications

FD911S-FD911 Electron Tube_power Tube_electronic Tube
 
Power vacuum heating tube
FD911S Electron tube is high-power and metal-ceramic triode, with the structure of force air-cooling core column and water-cooling anode. Its maximum anode dissipation is 80kW and limiting frequency is 26MHz. When the frequency is lower the limiting rate, the output power is to 100kW. 
It is used in high frequency heating equipment in industry.
 
General characteristics
Filament Voltage
12 V
Filament current   
205±15A
Interelectrode capacitances, approx.
Grid-anode
100 pF
 
 
Cathode-grid
77 pF
Cathode-anode
1.4 pF
Transconductandce (la=12 A)
≥45mA/V
Temperature on the sealing the tube, max.
250℃
cooling
Air & water-cooling
Weight,( approx.)
18 Kg
Amplification factor
33
Anode water flow
120L/min
Operating position
Vertical, anode down
Grid water flow
2.5 L/min
Filament wire clamp water flow
2.5 L/min
Core column cooling airflow
3.2m3/min
 
Maximum ratings
Frequency  
26 MHz 
Anode dissipation
80 kW
Anode direct voltage
15 kV
Filament impact current
315 A
Anode direct current
15 A
Grid dissipation
2.6 kW
 
Typical operation
Filament voltage 
12 V 
Grid direct bias voltage
-600V
Anode direct voltage
12 kV
Grid direct current
1.6A
Anode direct current
11.5 A
Fluctuating power
100kW
Driving power
3100W
Driving voltage
1650V