Brand NEW.Package listing:FU-33 *1pcs Triode FU-33 (833A/833C) type electron tubes are glass triodes, with their anodes cooled naturally, and their maximum anode dissipation powers at 350W; when at a frequency not higher than 30MHz, their output powers may attain to 1KW. They are mainly applied in industrial high-frequency heating equipments for oscillations or in radio equipments for amplifications. Glass triodeTypeFU-33Equivalent on abroad833A/833COutput power(KW)1CathodeCathode materialsThoriated TungstenVoltage(V)10Current(A)10Main electric parametersAmplification factor35Inter-electrode Capacitances (PF)(Cathode earthed) Filament-Grid12.3Filament-Anode8.5Anode-Grid6.3MaximumMaximum anode dissipation (KW)0.35Maximum grid dissipation (W)20Maximum anode DC voltage (KV)4Maximum frequency (MHz)30CoolingFWeight (kg)0.6Additional: The information here may be modified with the products variation.Cooling: F–Forced air cooling S–Water cooling Z–Vapor cooling Payment:1. All payment must be prepaid. 2. We only accpet payment via paypal. Please kindly check if you can do the payment via paypal before placing an order.Shipping1. We are not responsible for undeliverable address. We reserve the right to charge the shipping fee again for returned item due to wrong address. 2. Item are generally shipping out within 2 working days after your payment have been cleared. We ship on Monday to Friday (excluding Public Holidays). 3. Orders from the HongKong or Shenzhen will all be shipped out via the post postal. 4. We Ship to Worldwide, except the excluding country. Most delivered 10-30 business days.Returns1. We offer 30 days money back guarantee return policy. 2. We will responsible for the postage of damaged replacements. Refund will be made upon receipt of the returned item.