Power Grid Tubes (Triodes & Tetrodes)
Toshiba Power Grid Tubes

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.

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

  1. Type**: For maintenance use only
  2. 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

  1. Type**: For maintenance use only
  2. 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

  1. Type**: For maintenance use only
  2. 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

  1. Type**: For maintenance use only
  2. 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

  1. *When operating at 90MHz. 　**When operating below 30MHz.
  2. 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

  1. *When operating at 90MHz. 　**When operating below 30MHz.
    *** Pulse plate current.
  2. 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

  1. *Bandwidth of 6.0MHz, sync. level.* *In a grounded control-grid screen-grid circuit. **When operating below 30MHz. *** Effective power.
  2. FA: Forced air cooling　VF: Vapor cooling, Forced ventilation
Toshiba Power Tubes
Toshiba Power Tubes