The FU7085F is a ceramic-metal triode. It has thoriated tungsten cathode and forced air cooling of plate.
The tube maximum plate dissipation is 2.5kW (Intermittent) and maximum frequency operation is 110MHz.
The tube is designed for oscillator in the industry high frequency heating applications.
The tube can replace 7T85RB.
GENERAL CHARACTERISTICS
Electrical
Cathode………………......……..Thoriated Tungsten
Filament Voltage………....………………...6.3V
Filament Current………..………...…….31~38A
Transconductance………...………….…….…5mA/V
Amplification Factor………………..……………….21
Interelectrode Capacitances:
Filament to Grid…….………….….….…....15pF
Filament to Plate…….…………………….0.5pF
Grid to Plate…………..………...…….…….13pF
Mechanical
Overall Length………………………...………221mm
Overall Diameter………….…………………φ130mm
Net Weight………………...……….…………….2.5kg
Mounting Position………Vertical, Plate Up or Down
COOLING
Cooling…………………..…………..…..…Forced Air
Air Flow…………………...…………....…≥3.3m3
/min
Static Pressure Loss….……………......…… ≥170Pa
Maximum Envelope Temperature…………… 250 degrees centigrade
TYPICAL OPERATION
Continious , Intermittent
Plate Voltage.….…….…. 7.5, 8 kV
Plate Current..……..…… 0.9, 1.0 A
Grid Current…...….…….. 200, 250 mA
Grid Resistor……….…… 4500, 4500 ohm
Output Power……...…… 5.1, 6 kW
Note :
Values for intermittent service are those for 30
seconds of operating time and 50% of duty Factor.

We have a wide range of equivalents for other part numbers . Please contact us if you can not find here what you need.
The freight of list is just reference, please base on the actual freight when the products are sent to you.
Shipment:
When you place an order, please choose a shipping method and pay for the order including the shipping fee. We will send the items within 5 days once your payment is completed.
The delivery time on all international shipments due to differences in customs clearing times in individual countries, which may affect how quickly your product is inspected.
Buyers are responsible for all additional customs fees, brokerage fees, duties, and taxes for importation into your country. These additional fees may be collected at time of delivery. We will not refund shipping charges for refused shipments.
The shipping cost does not include any import taxes, and buyers are responsible for customs duties.
We ship by DHL,UPS,FEDEX OR EMS. We will select the fast and reliable way for delivery. Save on shipping and safter on delivery. Items will ship within 5 business days on payment
Received.We are not responsible for wrong or undeliverable address.
Delivery time:
By UPS, DHL, FEDEX: 5-7 Businessdays to most of countries.
Received:
Dear Friend when you receive the items you ordered in 48 hours, pls check it carefully first
If they are damaged or not, if some items broken, pls inform us in time.Pls don’t leave a bad feedback or return the goods to us without contacting us.Don’t worry, we must be responsible for your shopping at our store.
Returns:
After you receive the items you ordered. In 15 days, When you are not satisfied with our products and service. We will refund to you or resend new one to you immediately.
However, the buyer should make sure that the items returned are in their original conditions. If the items are damaged or lost when they are returned, the buyer will be responsible for such damage or loss, and we will not give the buyer a full refund. The buyer should try to file a claim with the logistic company to recover the cost of damage or loss.
The buyer will be responsible for the shipping fees to return the items
Warranty & Maintenance:
We offer the 1-month free replacement. Buyers may request for a replacement within 15 days from your receipt of the product. The buyer should return the product in the original conditions to us and should bear the shipping costs for return.
We provide 12-month free maintenance. If any part is required to be replaced, the buyer should also pay for the costs of the parts to be replaced.
Before returning the items, please confirm the return address and the logistics method with us. After you give the items to the logistic company, please send us the tracking number. As soon as we receive the items, we will repair or exchange them ASAP.
Feedback:
Your satisfaction and positive feedback is very important to us. Please leave positive feedback and 5 stars if you are satisfied with our items and services.
If you have any problems with our items or services, please feel free to contact us first before you leave negative feedback. We will do our best to solve any problems and provide you with the best customer services.
Contacts:
If I am not online, please send the email to me.
I will reply for you ASAP.