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Electrical parametersFilament voltage: 5VFilament current: 14.5AThe maximum instantaneous filament current: 22AMagnification factor: 130Transconductance: 15mA / VElectrode capacitance:Anode - the GRID: 4.1pFCathode - the GRID: 7.4pFAnode - Cathode: 0.07pFMechanical properties:Quality: (approximately) 0.25Kg (F)Installation: vertical, anode terminals upCooling: natural coolingShell and tube maximum temperature: 225 ° CAnode sealing at the maximum temperature: 225 ° CThe core columns to seal the access at the highest temperature: 200 °CMaximum ratings
The maximum anode DC voltage: 4KVMaximum Anode DC Current: 350mAMaximum anode dissipation power: 500WMaximum GRID power dissipation: 20WIn typical operation: class C telegraphFilament voltage: 5VAnode DC voltage: 3.5KVGRID DC bias voltage:-75VAnode DC Current: 300mAGRID DC current: 115mAAnode output power: 850WNote: generally under matched load can be naturally cooled, but the equipment must be well ventilated, if in a non-matched load, high pressure, high-frequency conditions required for forced air cooling, ventilation should be through the outlet from the tube at the bottom of under the previous air.