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Pentodes/Diodes |
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The 117L7 etc are doubly listed under rectifiers and power amplifiers not in this list. |
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The diodes in the tubes in this list are low current low voltage for use as detectors. |
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Heater (H), Filament (F) |
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Type |
Function or configuration |
H/F |
V |
A |
Other heater voltages |
Max Plate Dissipation (watts) |
Max Plate Voltage (volts) |
Max Screen Voltage (volts) |
Gm |
Rp |
Base Type |
Note |
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1DN5 |
Semi-Remote Cutoff Pentode/Diode |
F |
1.4 |
50 mA |
- |
N. A. |
67.5 |
67.5 |
630 |
600 k |
7 Pin Mini |
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1S5 |
Sharp Cutoff Pentode/Diode |
F |
1.4 |
50 mA |
- |
N. A. |
90 |
90 |
720 |
500 k |
7 pin Mini |
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1U5 |
Sharp Cutoff Pentode/Diode |
F |
1.4 |
50 mA |
- |
N. A. |
90 |
90 |
720 |
500 k |
7 pin Mini |
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6AM8 |
Sharp Cutoff Pentode/Diode |
H |
6.3 |
0.45 |
- |
2.8 |
300 |
150 |
7000 |
600 k |
9 pin Mini |
Diode has separat cathode. |
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6AS8 |
Sharp Cutoff Pentode/Diode |
H |
6.3 |
0.45 |
- |
2.5 |
300 |
150 |
6200 |
300 k |
9 pin Mini |
Diode has separat cathode. |
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6B7/S |
Remote Cutoff Pentode/Duo Diode |
H |
6.3 |
0.3 |
2 |
2.25 |
300 |
125 |
1125 |
600 k |
7 Pin W Top Cap |
Common cathode. |
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6B8 |
Remote Cutoff Pentode/Duo Diode |
H |
6.3 |
0.3 |
- |
2.25 |
300 |
125 |
1125 |
600 k |
Octal |
Common cathode. |
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6BW8 |
Sharp Cutoff Pentode/Duo Diode |
H |
6.3 |
0.45 |
- |
3.0 |
300 |
150 |
5200 |
250 |
9 pin Mini |
Diodes have their own cathode. |
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6BY8 |
Sharp Cutoff Pentode/Diode |
H |
6.3 |
0.6 |
- |
3.0 |
300 |
150 |
5200 |
1000 |
9 pin Mini |
Diode has separat cathode. |
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6EQ7 |
Sharp Cutoff Pentode/Diode |
H |
6.3 |
0.3 |
12, 20 |
3.0 |
300 |
150 |
3800 |
250 k |
9 pin Mini |
Common cathode. |
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6ET7 |
Sharp Cutoff Pentode Duo Diode |
H |
6.3 |
0.75 |
8 |
5.0 |
330 |
165 |
11500 |
60 k |
9 pin Mini |
Diodes have their own cathode. |
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6HJ8 |
Sharp Cutoff Pentode Diode |
H |
6.3 |
0.45 |
- |
3.2 |
330 |
165 |
9300 |
200 k |
9 pin Mini |
Diode has separat cathode. |
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6SF7 |
Remote Cutoff Pentode/Diode |
H |
6.3 |
0.3 |
12 |
3.5 |
300 |
100 |
2050 |
700 k |
Octal |
No base diagram found. |
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12F8 |
Remote Cutoff Pentode Duo Diode |
H |
12.6 |
0.15 |
- |
N. A. |
30 |
30 |
1000 |
330 k |
9 pin Mini |
Common cathode. |