• High Frequency Metal Ceramic Power Grid Tube Vacuum Triode (8T25RA)
  • High Frequency Metal Ceramic Power Grid Tube Vacuum Triode (8T25RA)
  • High Frequency Metal Ceramic Power Grid Tube Vacuum Triode (8T25RA)
  • High Frequency Metal Ceramic Power Grid Tube Vacuum Triode (8T25RA)
  • High Frequency Metal Ceramic Power Grid Tube Vacuum Triode (8T25RA)
  • High Frequency Metal Ceramic Power Grid Tube Vacuum Triode (8T25RA)

High Frequency Metal Ceramic Power Grid Tube Vacuum Triode (8T25RA)

Shape: Metal Porcelain Tube
Shielding Type: Other
Cooling Method: Air Cooled Tube
Working Frequency: High Frequency
Structure: Metal Ceramic
Encapsulation Structure: Other
Customization:
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  • Dimension(mm)
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Overview

Basic Info.

Model NO.
8T25RA
Power Level
High Power
Material
Metal Ceramic
Filament Voltage
7.5-8.5V
Filament Current
130A
Amplifcation Factor
20
Max Power
31kw
Working Position
Vertical
Max Height
402.5mm
Max Diameter
202mm
Max Weight
10.7kg
Cooling
Forced Air
Transport Package
Foam Packing
Trademark
SETEC
Origin
China
HS Code
8540890090
Production Capacity
100PCS Monthly

Product Description

8T25RA, it is metal ceramic high-power triode, with the directly heated thorium tungsten cathode, the anode is cooled by forced air. Max anode dissipation power 15kW, when the frequency is less than 40MHz, the continue output power can up to 28kW, this tube is mainly used as oscillators and amplifiers in industrial high frequency medium heated equipments.
Electrical Characteristics
Filament Voltage 8±0.5V
Maximum filament impulse current 240A
Filament Current 130A
Amplification Factor 20
Transconductance(1a=2A) 24mA /V
Interelectrode Capacitances
Grid - Anode 32pF
Grid - Filament 46pF
Anode - Filament 1.8pF
Maximum working frequency 40MHz
Maximum Diameter 202mm
Maximum Height 402.5mm
Weight 10.7kg
Operating position Vertical or anode down
Cooling Forced air
Anode cooling air flow 25m³/min
Air flow on filament heat 1m³/min
Max temperature at any point tube envelope 250ºC
The highest temperature terminal 200ºC

Limit Working Conditions:
Rf Power Amplification and Oscillation
(Class C telegraphic state)
DC Anode Voltage 14kV
DC Anode Current 4.5A
DC Grid Voltage -2000V
DC Grid Current 0.8A
Grid Dissipation 400W
Anode Dissipation 15kW

Typical Operation:
(Oscillating)
Frequency 40MHz
DC Anode Voltage 10V    12V
DC Anode Current 4       3.7A
DC Grid Current 0.4     0.4A
Grid Resistance 2.5     2.8kΩ
Anode Output Power 28     31kW
 
Dimension(mm)
High Frequency Metal Ceramic Power Grid Tube Vacuum Triode (8T25RA)
Product Picture

High Frequency Metal Ceramic Power Grid Tube Vacuum Triode (8T25RA)

Product Description

8T25RA is a High frequency metal ceramic Power grid tube triode designed specifically for industrial applications. This tube uses a coaxial design and metal-ceramic technology. This tetrode may be operated in CW or pulse modes.

For operation in pulse mode, the parameters depend on each equipment characteristics.

We manufacture the following all models.
FC-10FA, FC-10FT, FC-732F, FC-735F, FC-735FT, FC305F, FC311, FC312F, FC620F, FC620FT,FD911S, FD003Z, FD-5S.
FC10FT, FC201F, FC307F, FC307FS, FC308C, FC310C, FC310F, FC502F, FC732F, FC734F, FC735F.
FU-33, FU-833A, 833A, 833C, FU-74F/RY-74B, FU-100F, FU-728F, FU-113F, FU-113FG, FU-998F, FU-5S, FU-62S, FU-610F, FU-610FA, FU-610S, FU-724F, FU-724S, FU-727F, FU-824F, FU-824FA, FU-832F, FU-834F, FU-834FA, FU-836F, FU-924F,FU-924FA,FU-928F,FU-101F,FU-101M,FU-101Z,FU-101C,FU-832C,FU-832FA, FU-832F,FU-832M, FU-917F,FU-917M, FU-307S, FU-74F, FU-250F, FU-252F, FU-946F, FU-947F FU611F, FU612F, FU613F, FU001F, FU104C, FU104Z, FU115F, FU116F, FU252F, FU615F, FU616C, FU617F, FU618F, FU720F, FU820C,FU820F, FU002F, FU617FT, FU-84F, FU-74F, FU-1608C, FU-1608F.
GU84B, GU74B, GU78B.
FM70FT,ML8533, ML8536,YU191B, YU191C, YU-148, YU-108,, YU-148, YU-191B,YL1050, YL1057, YL1631, YL1420,YD1202, YD1212.
BW1184J2F, BW1185J2F, BW1184J, BW1185J, BW1184J2, BW1185J2, BW1608J2F, BW1608J.CQK25-2,CQK50-2.
3CX4500H3,3CX6000A7,3CX2500H3,3CX2500A3,3CX2500F3,3CX3000A7,3CX3000F7,3CX1500D3,3CX10000D3,3CX10000A3,3CX10000A7,3CX10000H3,3CX15000A3,3CX15000A7,3CX15000H3,3CX20000H3,3CX20000A7,3CX800A7,3CPX800A7,3CX1500A7,3CPX1500A7,3CX5000A7,3CPX5000A7,YU-158.
YC-156,YC-156A,YC-179,YC-236,YC-257.
3CW5000F1,3CW5000F3,3CW40000H3,3CW45000H3,3CW20000A7,3CW20000H3,
3CW20000H7,3CW30000H3,3CW30000A7,3CW30000H7.
3CX2500A3,3CX2500F3,3CX2500H3,3CX3000A7, 3CX1500A7, 3CW20000A7.
4CX250B, 4CX250R, 4CX250FG, 4CX800A/RY-74B, 4CX800A, 4CX350A, 4CX350F, 4CX1000A,4CX1500B,4CX3500A,4CW1000A,4CX1500A,4CX3000A,4CX5000A,4CX5000R,4CX7500A,4CX10000D,4CX10000J,4CX15000A,4CX20000C,4CX20000D,4CX20000E,4CV100000C, 4CX250K, 4CX1500A, 4CX3000A, 4CX3500A, 4CX15000A, 4CV100000C, 4CX35000C, 4CX5000A,5CX1500A.
CTK12-4, CTK12-1, CTK15-2, CTK25-4, ITK12-1, ITK3-1, ITK5-1, ITK15-2, ITK30-2, ITK60-2, ITK70-2, ITK90-1, ITL12-1, ITL3-1, ITL5-1, ITL9-1, ITL15-2.
TH5-6, TH6-3A, TH382, TH382, TH584, TH338, TH331, TH537, TH527, TH327, TH582, TH558, TH610, TH375, TH576, TH373, TH328, TH347.
E3061, E3062, E3062E, E3069, E3130.
RS3060CL, RS3060CJ, RS3021CJ, RS3026CJ, RS3040CJ, RS3041CJ, RS3041CJ, RS3040CJ, RS3060CJC, RS3021, RS2048CJ, RS2048CJC, RS1034SK, RS1034SL, RS1072C, RS2054SK.
8560AS, 928F,836F, 8741, 7T85, 7T69, 8F75R, 7F71RA, 8F68R.
6T51, 6T58RA, 7T62R, 7T62RE, 7T85RB, FU-947F, 7T69RB, 7T84RB, 7T69RB, 8T25RA, 8T85B, 8T85RB, 8T87RB, 8F76R, 8T69JB.
SK300 Socket, SK1300 Socket, SK2210 Socket, SK184 Socket..
Certifications
High Frequency Metal Ceramic Power Grid Tube Vacuum Triode (8T25RA)
Packaging & Shipping
High Frequency Metal Ceramic Power Grid Tube Vacuum Triode (8T25RA)
FAQ
High Frequency Metal Ceramic Power Grid Tube Vacuum Triode (8T25RA)

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Gold Member Since 2015

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Terms of Payment
LC, T/T, Western Union
International Commercial Terms(Incoterms)
FOB, EXW, CIF
OEM/ODM Availability
Yes