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Your position: Home / Electron Tubes / Industrial heating tubes

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Reviews(11)

For fast delivery of goods, kindly please read following tips carefully before order:

Since this triode is high value and Customs declarance necessary,
for compliance with China foreigh exchange policy.

the Payment need to be paid through TT to our company bank account,
therefore, please DO NOT pay the order directly online.

please contact EECTECH through sales@eectech.store BEFORE order / BEFORE payment, we will help you to complete the order and payment fluently in a short time.

Thank you.

Introduction:
1. The FU-3300S electron tube is a direct-heating thorium-tungsten cathode, metal ceramic structure, anode water-cooled triode, the maximum operating frequency is 90MHz, the maximum power dissipation of the anode is 30kW, and the maximum power dissipation of the grid is 500W.
2. Mainly used in audio class B amplifiers, RF power amplifiers and oscillators. It can be used interchangeably with imported 3CW30000H3 electron tube.

Characteristic parameter
Filament Voltage………6.3V
Filament Current... 160A
Amplification Factor...... 20
Inter-electrode capacitance (cathode ground)
Electrode Capacitances(Grounded Filament)
Input……………………53pF
Cross-road Grid-Plate………………1.3pF
Output……………………34pF
Installation method...Vertical installation, anode up or down
cooling method:
Mandrel.............................. Forced air cooling
Anode................................. forced water cooling
Maximum Weight………5.0kg
Maximum working temperature of anode casing and sealing place is 250℃
The maximum temperature of the flexible lead wire of the filament…………175℃

Extreme use data
Anode voltage DC Plate Voltage………12kV
Anode current DC Plate Current…………6A
Grid Voltage DC Grid Voltage………-1000V
Grid current DC Grid Current…………1.0A
Plate Dissipation……30kW
Plate Output Power…60kW

Typical working state
Anode voltage DC Plate Voltage...... 7kV
Grid voltage DC Grid Voltage...... -600V
Anode current DC Plate Current... 6A
Grid current DC Grid Current...... 0.66A
Plate Input Power…30kW
Plate Dissipation…12kW
Load resistance Load Impedance………600Ω

Note: Please contact EECTECH for a better price and a more accurate delivery time.

For delivery time:
Generally, we will dispatch the items within 10 days upon order confirmation; some items may need 20~30 days to get ready for delivery, then we will try our best to dispatch as soon as possible, or we will contact you and offer advice.

For Bulk order:
If you would like to place a bulk order, please contact us for better price.