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This is an indirect-heated oxide cathode, forced-air cooled, 250-watt anode dissipation, ceramic/metal radial beam tetrode, ideal for usage in ultrashort radio equipment, TV transmitter, end stage power amplification, pulse RF power amplification and oscillator. |
Technical specification
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Model: 4CX250K |
General Characteristics(for more details, please download or ask for) | |||||||
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Anode Voltage(Max.) |
2,000 V |
Filament/Cathode |
Oxide |
Length |
71.5 mm |
Cooling Way |
Forced Air | |
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Screen Grid Voltage(Max.) |
300 V |
Heating |
Indirect |
Diameter |
41.6 mm |
Socket |
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Anode Current(Max.) |
250 mA |
Transconductance |
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Weight |
150 g |
Chimney |
| |
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Anode Dissipation(Max.) |
300 W |
Amplification Factor |
5 |
Interelectrode Capacitance |
Cathode Grounded |
Grid Grounded | ||
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No.2 Grid Dissipation(Max.) |
12 W |
Filament Voltage |
6.0 V |
Input |
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17 pF | ||
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No.1 Grid dissipation(Max.) |
2 W |
Filament Current |
2.7 A |
Output |
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6 pF | ||
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Frequency for Max. Rating |
500 MHz |
Operation Position |
Any |
Feedthrough |
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0.05 pF | ||
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Typical Operation | ||||||||
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Type of Service |
Class of Operation |
Anode Voltage |
No. 2 Grid Voltage |
No. 1 Grid Voltage |
Anode Current |
Anode Dissipation |
No. 2 Grid Dissipation |
No. 1 Grid Dissipation |
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Telegraph |
C |
2,000 V |
300 V |
-250 V |
250 mA |
300 W |
12 W |
2 W |
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Telephone |
C |
1,500 V |
300 V |
-250 V |
|
250 W |
12 W |
2 W |