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Triodes with one or more diodes |
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Many triodes have one, two, or three, diodes in the same envelope. These are intended for use as detectors in radio or television receivers. The diodes have very |
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low current ratings ranging from 1 to 5 mA. The voltage rating is rarely stated. It is recommended that these diodes not be used to rectify power line voltage. |
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Heater (H), Filament (F) |
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Type |
Function or Configuration |
H/F |
V |
A |
Other heater voltages |
Plate Dissipation |
Max Plate Voltage |
Gm |
µ |
Rp |
Base |
Notes |
|
1H5GT |
Triode/Diode |
F |
1.4 |
50 mA |
- |
N. A. |
90 |
275 |
65 |
240 K |
Octal |
|
|
1LH4 |
Triode/Diode |
F |
1.4 |
50 mA |
- |
N. A. |
90 |
275 |
65 |
240 k |
Loctal |
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6AQ6 |
Triode Duo Diode |
H |
6.3 |
0.15 |
- |
N. A. |
300 |
1200 |
70 |
58 k |
7 Pin Mini |
Two diodes share cathode with Triode. |
|
6AT6 |
Triode Duo Diode |
H |
6.3 |
0.3 |
- |
0.5 |
300 |
1200 |
70 |
5800 |
7 Pin Mini |
Two diodes share cathode with Triode. |
|
6AV6 |
Triode Duo Diode |
H |
6.3 |
0.3 |
12 |
N. A. |
300 |
1600 |
100 |
62.5 k |
7 Pin Mini |
Two diodes share cathode with Triode. |
|
6BF6 |
Triode/Diode |
H |
6.3 |
0.3 |
12 |
N. A. |
250 |
1900 |
16 |
8500 |
7 Pin Mini |
Two diodes share cathode with Triode. |
|
6BJ8 |
Triode 2 Diodes |
H |
6.3 |
0.6 |
- |
4.0 |
330 |
2800 |
20 |
7150 |
9 Pin Mini |
Three Separate Cathodes. |
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6BN8 |
Triode Duo Diode |
H |
6.3 |
0.6 |
- |
1.7 |
330 |
2500 |
70 |
28 k |
9 Pin Mini |
Three Separate Cathodes. |
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6CN7 |
Hi mu Triode Duo Diode |
H |
6.3 CT |
0.3 |
8 |
1.0 |
300 |
1200 |
70 |
58 k |
9 Pin Mini |
One cathode for the Triode, another for the two Diodes. |
|
6FM8 |
Duo Diode Triode |
H |
6.3 |
0.45 |
- |
1.1 |
330 |
1200 |
70 |
58 k |
9 Pin Mini |
Three Separate Cathodes. |
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6Q7(G |
Hi mu Triode Duo Diode |
H |
6.3V |
0.3A |
- |
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250V |
1200 |
70 |
58K |
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6R7(G/GT |
Medium mu Triode Duo Diode |
H |
6.3V |
0.3A |
- |
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250V |
1900 |
16 |
8.5K |
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6S8GT |
Triode + 3 Diodes |
H |
6.3V |
0.3A |
12 |
N. A. |
250V |
1100 |
100 |
91K |
Octal |
Two diodes share cathode with Triode. |
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6SQ7 |
Duo Diode Triode |
H |
6.3 |
0.3 |
12 |
N. A. |
250 |
1175 |
100 |
85 k |
Octal |
Two diodes share cathode with Triode. |
|
6T4 |
UHF Triode plus two Diodes |
H |
6.3 |
0.225 |
2 |
3.5 |
200 |
7000 |
13 |
1860 |
Octal |
Common Cathode. |
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6T8 |
Triode + 3 Diodes |
H |
6.3 |
0.45 |
5, 19 |
1.0 |
300 |
1200 |
70 |
58 k |
9 Pin Mini |
Two diodes share cathode with Triode. |
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7B6 |
Duo Diode Triode |
H |
6.3 |
0.3 |
14 |
N. A. |
250 |
1100 |
100 |
91 k |
Loctal |
Two diodes share cathode with Triode. |
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7C6 |
Duo Diode Triode |
H |
6.3 |
0.15 |
- |
N. A. |
250 |
1000 |
100 |
100 k |
Loctal |
Two diodes share cathode with Triode. |
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12AD6 |
Medium mu Triode Duo Diode |
H |
12.6 |
0.15 |
- |
N. A. |
30 |
1000 |
15 |
15 k |
7 Pin Mini |
Two diodes share cathode with Triode. |
|
12AJ6 |
Duo Diode Triode |
H |
12.6 |
0.15 |
- |
N. A. |
30 |
1200 |
55 |
45 k |
7 Pin Mini |
Two diodes share cathode with Triode. |
|
12BR7 |
Duo Diode Triode |
H |
12.6 CT |
0.225 |
9 |
2.5 |
300 |
5500 |
60 |
10.9 k |
9 Pin Mini |
Two diodes have their own cathode. Diode PIV = 300 v, Ip = 60 mA. |
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12DV7 |
Duo Diode Triode |
H |
12.6 CT |
0.15 |
- |
N. A. |
16 |
750 |
14 |
19 k |
9 Pin Mini |
One cathode for the Triode, another for the two Diodes. |
|
12EL6 |
Duo Diode Triode |
H |
12.6 |
0.15 |
- |
N. A. |
30 |
1200 |
55 |
45 k |
7 Pin Mini |
Two diodes share cathode with Triode. |
|
12FK6 |
Duo Diode Triode |
H |
12.6 |
0.15 |
- |
N. A. |
16 |
1200 |
7.4 |
6200 |
7 Pin Mini |
Two diodes share cathode with Triode. |
|
12FM6 |
Duo Diode Triode |
H |
12.6 |
0.15 |
- |
N. A. |
30 |
1300 |
10 |
7700 |
7 Pin Mini |
Two diodes share cathode with Triode. |
|
55 |
Duo Diode Triode |
H |
2.5 |
1.0 |
- |
N. A. |
250 |
1100 |
8.3 |
7500 |
6 pin W Top cap |
Common Cathode. |
|
75 |
Duo Diode Triode |
H |
6.3 |
0.3 |
- |
N. A. |
250 |
1175 |
100 |
85 k |
6 pin W Top cap |
Common Cathode. |
|
85 |
Duo Diode Triode |
H |
6.3 |
0.3 |
- |
N. A. |
250 |
1100 |
8.3 |
7500 |
6 pin W Top cap |
Common Cathode. |