7T85RB electron tubes is high-power metal ceramic triodes, with their anodes cooled by forced air, and their maximum anode dissipation powers at 2.5kW; when at a frequency not higher than 110MHz, their output powers may attain to 5.1kW. They are mainly applied in industrial high-frequency heating equipments for oscillations or in radio equipments for amplifications.
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Ceramic-metal triodes (2.5-35KW)
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| Type | FU-947F | ||
| Equivalent on abroad | 7T85RB | ||
| Output power(KW) | 5.1 | ||
| Cathode | Cathode materials | Thoriated Tungsten | |
| Voltage(V) | 6.3 | ||
| Current(A) | 35 | ||
| Main electric parameters | Amplification factor | 21 | |
| Inter-electrode Capacitances (PF) | Filament-Grid | 15 | |
| (Cathode earthed) | Filament-Anode | 0.5 | |
| Anode-Grid | 13 | ||
| Maximum | Maximum anode dissipation (KW) | 2.5 | |
| Maximum grid dissipation (W) | 130 | ||
| Maximum anode DC voltage (KV) | 8 | ||
| Maximum frequency (MHz) | 110 | ||
| Cooling | F | ||
| Weight (kg) | 2.4 | ||
| Additional: The information here may be modified with the products variation. | |||
| Cooling: F--Forced air cooling S--Water cooling Z--Vapor cooling | |||