Power Grid Tubes (Triodes & Tetrodes)
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Power grid tubes are used in radio communications, transmitters for broadcasting and other applications, and in industrial high-frequency apparatus. Toshiba Electron Tubes & Devices' products service an extremely wide range of frequencies, from direct current to several 100 MHz, and power of up to several 100 kW.
Toshiba Electron Tubes & Devices supplies the market with forced-air-cooled triodes, water-cooled triodes, vapor-cooled triodes, forced-air-cooled tetrodes, vapor-cooled tetrodes and oil-cooled tetrodes.
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Lineup
Triodes <Plate Loss: Less than 1000W>
| Type | Heater or Filament | Trans Conduct. (mS) |
Amp. Factor μ |
Max Freq. (MHz) |
Max. Plate Ratings | Output Power (kW) |
Cooling | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Volt (V) |
Curr. (A) |
Volt. (kV) |
Curr. (mA) |
Diss. (W) |
||||||
| 6T58RA | 5 | 22 | 4.5 | 17 | 110 | 6 | 650 | 800 | 2.4 | FA |
| E3061C** | 6.3 | 32 | 6.5 | 45 | 50 | 7.5 | 750 | 800 | 2.5 | FA |
| 7815 ** | 6 | 0.98 | 25 | 100 | 3,000 | 2 | 10 | 10 | - | C |
♦Notes
- Type**: For maintenance use only
- FA: Forced air cooling C: Conduction cooling
Triodes <Plate Loss : 1kW - less than 10kW>
| Type | Heater or Filament | Trans Conduct. (mS) |
Amp. Factor μ |
Max Freq. (MHz) |
Max. Plate Ratings | Output Power (kW) |
Cooling | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Volt (V) |
Curr. (A) |
Volt. (kV) |
Curr. (A) |
Diss. (kW) |
||||||
| 7T69RB | 12.6 | 35 | 13 | 21 | 110 | 8 | 2 | 4.5 | 9 | FA |
| 7T82JA | 5 | 22 | 4.5 | 17 | 110 | 6 | 0.65 | 1.5 | 2.4 | W |
| 7T84B | 6.3 | 22 | 4.5 | 17 | 110 | 7 | 0.8 | 2 | 3.8 | W |
| 7T84RB | 6.3 | 22 | 4.5 | 17 | 110 | 7 | 0.8 | 1.5 | 3.8 | FA |
| 7T85RB | 6.3 | 35 | 5 | 21 | 110 | 8 | 1 | 2.5 | 5.1 | FA |
| E3062E | 6.3 | 32 | 6.3 | 25 | 70 | 7.5 | 0.75 | 1.5 | 3.4 | FA |
| 8T20B | 12 | 40 | 11 | 21 | 45 | 12 | 2.5 | 10 | 18 | W |
| 8T20RB | 12 | 40 | 11 | 21 | 45 | 12 | 2.5 | 10 | 16 | FA |
| 8T30A | 12 | 40 | 6.6 | 50 | 30 | 12 | 2 | 6 | 11 | W |
| 8T30RA | 12 | 40 | 6.6 | 50 | 30 | 12 | 2 | 6 | 11 | FA |
| 8T64B | 12 | 40 | 8 | 20 | 45 | 12 | 2 | 10 | 13 | W |
| 8T64RB | 12 | 40 | 8 | 20 | 45 | 12 | 2 | 6 | 13 | FA |
| 8T69JB | 12.6 | 35 | 12 | 21 | 110 | 8 | 2 | 6 | 9 | W |
| 8T85RB | 12 | 40 | 11 | 21 | 40 | 12 | 2.5 | 10 | 17.5 | FA |
| E3069 | 12.6 | 35 | 13 | 21 | 110 | 8 | 2.2 | 5 | 11 | FA |
| E3097 ** | 6.3 | 22 | 6.5 | 35 | - | 20 | 0.8 | 1.5 | - | FA |
| E3130 | 12.6 | 45 | 17 | 21 | 110 | 8 | 2.5 | 6 | 13 | FA |
| E3170 | 12.6 | 35 | 10 | 21 | 110 | 8 | 2.2 | 5 | 11 | FA |
| E3185 | 6.3 | 30 | 6.5 | 25 | 110 | 7.5 | 0.8 | 1.5 | 4.5 | FA |
♦Notes
- Type**: For maintenance use only
- FA: Forced air cooling W: Water cooling
Triodes <Plate Loss : 10kW - less than 100kW>
| Type | Heater or Filament | Trans Conduct. (mS) |
Amp. Factor μ |
Max Freq. (MHz) |
Max. Plate Ratings | Output Power (kW) |
Cooling | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Volt (V) |
Curr. (A) |
Volt. (kV) |
Curr. (A) |
Diss. (kW) |
||||||
| 8T25RA |
8.0 | 110 | 24 | 20 | 40 | 14 | 4.5 | 15 | 31 | FA |
| 8T25 | 8.0 | 110 | 24 | 20 | 40 | 14 | 4.5 | 20 | 31 | W |
| 8T61A | 8 | 280 | 30 | 20 | 40 | 14 | 8.5 | 35 | 57 | W |
| 8T72B | 8 | 180 | 16 | 20 | 40 | 14 | 6.5 | 25 | 40 | W |
| 8T84A | 8 | 180 | 16 | 20 | 40 | 14 | 6.5 | 30 | 42 | W |
| 8T85B | 12 | 40 | 11 | 21 | 45 | 12 | 3 | 13 | 22 | W |
| 8T86B | 12 | 40 | 11 | 21 | 45 | 12 | 3 | 13 | 22 | W |
| 8T87B | 8 | 180 | 16 | 20 | 40 | 14 | 5 | 30 | 42 | W |
| 8T87RB | 8 | 180 | 16 | 20 | 40 | 14 | 5 | 20 | 35 | FA |
| 9T16B ** | 8 | 280 | 30 | 20 | 40 | 12 | 8.5 | 50 | 57 | V |
| 9T64B | 12 | 320 | 70 | 30 | 25 | 15 | 15 | 75 | 137 | W |
| 9T71C | 11 | 285 | 38 | 30 | 25 | 17 | 13 | 75 | 130 | W |
| 9T94A | 13 | 320 | 70 | 30 | 25 | 16 | 16 | 80 | 170 | W |
| E3080A | 13 | 320 | 60 | 30 | 25 | 16 | 16 | 80 | 170 | W |
| E3116 | 8 | 280 | 30 | 20 | 40 | 14 | 8.5 | 25 | 57 | FA |
| E3132 | 8 | 280 | 33 | 20 | 45 | 14 | 8.5 | 30 | 60 | W |
♦Notes
- Type**: For maintenance use only
- FA: Forced air cooling W: Water cooling V: Vapor cooling
Triodes <Plate Loss: Over 100kW>
| Type | Heater or Filament | Trans Conduct. (mS) |
Amp. Factor μ |
Max Freq. (MHz) |
Max. Plate Ratings | Output Power (kW) |
Cooling | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Volt (V) |
Curr. (A) |
Volt. (kV) |
Curr. (A) |
Diss. (kW) |
||||||
| 9T38A/ LD961 |
18.3 | 315 | 90 | 40 | 2 | 15 | 20 | 120 | 240 | W |
| 9T40 ** | 18 | 315 | 80 | 40 | 2 | 15 | 20 | 150 | 240 | V |
| 9T83 ** | 18 | 315 | 80 | 40 | 2 | 15 | 20 | 150 | 240 | V |
| E3050/ 9T75 |
17.5 | 470 | 130 | 30 | 2 | 15 | 40 | 250 | 450 | W |
| E3085 | 15.8～ 18 |
450 | 130 | 30 | 2 | 15 | 40 | 250 | 320 | W |
| E3109 ** | 18 | 315 | 80 | 40 | 2 | 15 | 20 | 150 | 240 | V |
♦Notes
- Type**: For maintenance use only
- W: Water cooling V: Vapor cooling
Tetrodes <Plate Diss Up To 1000W >
| Type | Heater or Filament | Trans Conduct. (mS) |
Use |
Max Freq. (MHz) |
Max. Ratings | Plate Output (W) |
Cooling | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Volt (V) |
Curr. (A) |
Plate Volt. (V) |
Plate Curr. (mA) |
Plate Diss. (W) |
||||||
| 7F37R | 4.0 | 35 | 15(0.4) | CT * ABI** SSB |
130 30 |
4000 5000 |
700 700 |
1000 1000 |
1250 1800 |
FA |
♦Notes
- *When operating at 90MHz. **When operating below 30MHz.
- FA: Forced air cooling
Tetrodes <Plate Diss Up To 10kW >
| Type | Heater or Filament | Trans Conduct. (mS) |
Use |
Max Freq. (MHz) |
Max. Ratings | Plate Output (kW) |
Cooling | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Volt (V) |
Curr. (A) |
Plate Volt. (kV) |
Plate Curr. (A) |
Plate Diss. (kW) |
||||||
| 7F71R | 4.0 | 78 | 65 (1.6) | CT * BTV** |
130 300 |
5 5 |
1.8 1.8 |
3.5 3.5 |
5 1.1 |
FA |
| 8F45R | 7.5 | 75 | 23 (1.0) | CT CP ABI |
110 110 110 |
8 5.5 8 |
3.0 2.5 3.0 |
5 5 5 |
14 5.5 6 |
FA |
| E3030B | 7.5 | 24 | 8.3 (0.2) | Switch & regulator | - | 100 | ***5 | 1.5 | - | OFA |
| E3113 | 7.5 | 17 | 8.2 (0.2) | Switch | - | 150 | ***3 | 1.3 | - | O |
♦Notes
- *When operating at 90MHz. **When operating below 30MHz.
*** Pulse plate current. - FA: Forced air cooling OFA: Oil or Forced air cooling O: Oil cooling
Tetrodes <Plate Diss 10kW Up>
| Type | Heater or Filament | Trans Conduct. (mS) |
Use |
Max Freq. (MHz) |
Max. Ratings | Plate Output (kW) |
Cooling | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Volt (V) |
Curr. (A) |
Plate Volt. (kV) |
Plate Curr. (A) |
Plate Diss. (kW) |
||||||
| 8F67R | 6.9-7.5 | 126 | 65 (3.0) | CT BTV** |
230 230 |
8 8 |
4.5 6 |
15 15 |
15.5*** 15.2*** |
FA |
| 8F68 | 8.5 | 185 | 85 (3.0) | CT BTV* |
220 220 |
11 11 |
9 12 |
30 30 |
40 30 |
VF |
| 8F68R | 8.5 | 185 | 85 (3.0) | CT BTV* |
220 220 |
10 10 |
8 10 |
25 25 |
40 30 |
FA |
| 8F76R | 7.5 | 120 | 60 (2.5) | CT BTV* |
250 250 |
10 10 |
4.5 5.5 |
15 15 |
15 12 |
FA |
| 9F45 | 16 | 345 | 150 (10) | CT** CP** |
30 30 |
15 15 |
25 20 |
150 100 |
250 150 |
VF |
♦Notes
- *Bandwidth of 6.0MHz, sync. level.* *In a grounded control-grid screen-grid circuit. **When operating below 30MHz. *** Effective power.
- FA: Forced air cooling VF: Vapor cooling, Forced ventilation
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