It is a coaxial metal-ceramic directly heating tetrode for the frequency up to 300MHz, it is forced air-cooled, it is particularly suitable for TV transmitters in grounded control grid screen-grid circuit.
Electrical Characteristics
Heater Voltage |
10.0V |
Heater Current |
86A |
Cathode Emission Current |
40A |
Internal Amplification Factor |
7.5 |
Transconductance |
70mA/V |
Interelectrode Capacitances |
Cathode-Control-grid |
76pF |
Control-grid-Screen-grid |
122pF |
Screen-grid-Anode |
22pF |
Cathode-Anode |
0.07pF |
Control-grid-Anode |
0.75pF |
Screen-grid-Cathode |
5.5pF |
Limit Working Conditions:
Frequency |
250 MHz |
Anode DC Voltage |
5.5 kV |
Screen-grid DC Voltage |
1000 V |
Control-grid DC Voltage |
-250 V |
Peak Cathode Current |
35 A |
Anode Dissipation |
12 kW |
Control-grid Dissipation |
50 W |
Screen-gird Dissipation |
150 W |
Typical Operation:
TV vision transmitter |
Frequency |
220 220 220 MHz |
Bandwidth(-3dB) |
12 18 12 MHz |
Bandwidth(-1.2dB) |
7 10 7 MHz |
Output power, sync. Level |
16 12 12 kW |
Output power, black level |
9 6.6 6.6 kW |
Anode voltage |
5.2 4 4.8 kV |
Screen grid voltage |
900 800 800 V |
Control grid voltage |
-85 -75 -75 V |
Peak RF control grid voltage, Sync. Level |
170 140 130 V |
Anode current, black level |
3.8 3.7 3.1 A |
Screen grid current, black level |
20 110 100 mA |
Control grid current, black level |
50 60 30 mA |
Anode input power, black level |
19.8 14.9 14.9 kW |
Drive power, sync. Level |
46 30 10 W |
Anode dissipation, black level |
0.8 8.3 8.3 kW |
Screen grid dissipation, black level |
110 88 80 W |
Control grid dissipation, black level |
2 25 2 W |
Anode load resistance |
570 400 600 Ω |
Combined vision and sound amplifier for TV translators (Grounded control-grid screen-grid circuit, vision to sound ratio10:1) |
Frequency |
220 220 MHz |
Bandwidth |
10 10 MHz |
Output power, sync. Level |
5.5 2.2 kW |
3-tone inter modulation ratio |
≥58 ≥60 dB |
Anode voltage |
4.7 3.6 kV |
Screen grid voltage |
850 850 V |
Control grid voltage |
-70 -70 V |
Anode current, black level |
2.8 2.25 A |
Screen grid current, black level |
80 0 mA |
Control grid current, black level |
20 0 mA |
Anode input power, black level |
13.2 8.1 kW |
Drive power, sync. Level |
150 90 W |
Product Picture

Dimension(mm)

Product Description
TH375 is a High Frequency Metal ceramic transmitting tube designed specifically for industrial applications. This tube uses a coaxial design and metal-ceramic technology. This tube 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.
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