Duo Dissimilar Triodes

 

 

 

 

 

 

 

 

 

 

 

 

 

While there are only ten tubes listed on this page that's nine more than I thought there were.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heater (H), Filament (F)

 

 

 

 

 

 

 

 

Type

Function or Configuration

H/F

V

A

Other heater voltages

Triode

Plate Dissipation (Watts)

Max Plate Voltage

Gm

µ

Rp

Base

6CM7

Duo Triode

H

6.3

0.6

8

1

1.25

500

2000

21

10500

9 pin mini

2

5.5

500

4400

18

4100

6CS7

Duo Triode

H

6.3

0.6

8

1

1.25

500

2200

17.0

7700

9 pin mini

2

6.5

500

4500

15.5

3450

6CY7

Duo Triode

H

6.3

0.75

8, 11

1

1.0

350

1300

68

52 k

9 pin mini

2

5.5

350

5400

5

920

6DE7

Duo Triode

H

6.3

0.9

10, 13, 19

1

1.5

330

2000

17.5

8750

9 pin mini

2

7.0

275

6500

6.0

925

6DR7

Duo Triode

H

6.3

0.9

10, 13

1

1.0

330

1600

64

40 k

9 pin mini

2

7.0

275

6500

6.0

925

6EA7

Duo Triode

H

6.3

1.05

-

1

1.0

350

2200

66

30 k

Octal

2

10

550

6000

5.5

920

6EM7

Duo Triode

H

6.3

0.925

10, 13

1

1.5

330

1600

68

40 k

Octal

2

10

330

7200

5.4

750

6EW7

Duo Triode

H

6.3

0.9

10

1

1.5

330

2000

17.5

8750

9 pin mini

2

10

330

7500

6.0

800

6FD7

Duo Triode

H

6.3

0.9

13

1

1.5

330

1600

64

40k

9 pin mini

2

10

330

7500

6.0

800

6JK8

FM Osc Mixer

H

6.3

0.4

8, 17

1

1.0

165

6800

55

8000

9 pin mini

2

2.0

200

13000

70

5400

12DW7 / ECC832

AF Amplifier and Phase Inverter

H

12.6 CT

0.15

-

1

1.2

330

1600

100

62.5 k

9 pin mini

2

3.3

330

2200

17

7700


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