Product Description
947F 7T85RB 5KW 5000W electronic tube, High frequency machine, High cycle heat sealing machine vacuum tube
947F 7T85RB 5KW 5000W electronic tube, High frequency machine, High cycle heat sealing machine vacuum tube947F tube and 7T85RB tube have the same size and performance, and can be used interchangeably.
947F tube performance, parameters are shown below
First, the characteristic parameters
Filament voltage | 6.3V | Filament current | 35A |
transconductance(Ia=0.35A) | 5mA/V | magnification factor | 21 |
Interpole capacitance | gate-anode | 13pF | |
gate-cathode | 15pF | ||
Anode -- cathode. | 0.5pF | ||
Maximum operating frequency | 110MHz | Maximum height | 215mm |
maximum diameter | 130mm | weight(about) | 1.5kg |
Installation method | Vertical installation | cooling method | forced air cooling |
minimum air volume | 3.3m3/min | minimum static pressure | 166Pa |
Maximum temperature of inflow air | 45℃ | The maximum temperature at the electrode seal | 250℃ |
Launch tube maximum temperature | 250℃ |
Second, the use of limit values (class C telegrams)
continuous use | intermittent use | |
anode DC voltage | 8 | 8.5kV |
anode direct current | 1.0 | 1.2A |
gate direct current | 0.3 | 0.35A |
anode dissipation | 2.5 | 2.5kW |
gate dissipation | 130 | 150W |
III. Typical operating conditions of radio frequency power amplifiers or oscillators (Class C telegrams)
continuous use | intermittent use | |
anode DC voltage | 7.5 | 8kV |
anode direct current | 0.9 | 1A |
Anode output power | 5.1 | 6kW |
gate direct current | 200 | 250mA |
gate impedance | 4500 | 4500Ω |
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Condition
Brand New
Shipping
This item is shipped directly from our supplier in China with tracking.