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KT88 |
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Low Frequency, power beam tetrode. 15-25 Watts of pure class-A power
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Maximum Plate Voltage |
800 V |
Maximum Plate Current |
230 mA |
Plate Dissipation |
50 Watts |
bias at 250V/140mA |
-15 V |
Transconductance |
10.5 mA/V |
Amplification Factor |
8 |
Filament Voltage |
6.3 V (DC/AC) |
Filament Current |
1.6 A |
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2A3 |
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Low Frequency, low power triode. 2-5 Watts of pure class-A power
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Maximum Plate Voltage |
300 V |
Maximum Plate Current |
100 mA |
Plate Dissipation |
15 Watts |
Va |
250 V |
Ia |
70 mA |
Vg |
-45 V |
Transconductance |
5.2 mA/V |
Amplification Factor |
3.8 |
Filament Voltage |
2.5 V (DC/AC) |
Filament Current |
2.5 A |
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PX 4 |
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Low Frequency, low power triode. 3-6 Watts of pure class-A power
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Maximum Plate Voltage |
350 V |
Maximum Plate Current |
60 mA |
Plate Dissipation |
20 Watts |
Va |
250 V |
Ia |
48 mA |
Vg |
-32 V |
Transconductance |
5.1 mA/V |
Amplification Factor |
5.0 |
Filament Voltage |
4 V (DC/AC) |
Filament Current |
1.1 A |
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PX 25 |
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Low Frequency, high power triode. 5-10 Watts of pure class-A power
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Maximum Plate Voltage |
500 V |
Maximum Plate Current |
90 mA |
Plate Dissipation |
30 Watts |
Va |
400 V |
Ia |
63 mA |
Vg |
-31 V |
Transconductance |
7.4 mA/V |
Amplification Factor |
9.5 |
Filament Voltage |
4 V (DC/AC) |
Filament Current |
1.8 A |
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KR 300B |
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Low Frequency, high power triode. 6-12 Watts of pure class-A power. Fully compatible with classic 300B.
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Maximum Plate Voltage |
550 V |
Maximum Plate Current |
120 mA |
Plate Dissipation |
50 Watts |
Va |
450 V |
Ia |
100 mA |
Vg |
-90 V |
Transconductance |
6.2 mA/V |
Amplification Factor |
3.9 |
Filament Voltage |
5 V (DC/AC) |
Filament Current |
1.2 A |
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KR 300B-Baloon |
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Low Frequency, high power triode. 6-12 Watts of pure class-A power. Fully compatible with classic 300B.
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Maximum Plate Voltage |
550 V |
Maximum Plate Current |
120 mA |
Plate Dissipation |
50 Watts |
Va |
450 V |
Ia |
100 mA |
Vg |
-90 V |
Transconductance |
6.2 mA/V |
Amplification Factor |
3.9 |
Filament Voltage |
5 V (DC/AC) |
Filament Current |
1.2 A |
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KR 842VHD |
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Low Frequency, high power triode. 12-22 Watts of pure class-A power
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Maximum Plate Voltage |
600 V |
Maximum Plate Current |
150 mA |
Plate Dissipation |
65 Watts |
Va |
450 V |
Ia |
100 mA |
Vg |
-94 V |
Transconductance |
5.7 mA/V |
Amplification Factor |
3.7 |
Filament Voltage |
5 V (DC/AC) |
Filament Current |
1.8 A |
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KR 300BXLS |
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Low Frequency, high power triode. 15-24 Watts of pure class-A power
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Maximum Plate Voltage |
600 V |
Maximum Plate Current |
160 mA |
Plate Dissipation |
70 Watts |
Va |
450 V |
Ia |
100 mA |
Vg |
-94 V |
Transconductance |
5.7 mA/V |
Amplification Factor |
3.7 |
Filament Voltage |
5 V (DC/AC) |
Filament Current |
1.8 A |
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KR 211 |
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Low Frequency, high power, high gain, high voltage triode. 20-26 Watts of pure class-A power
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Maximum Plate Voltage |
1250 V |
Maximum Plate Current |
140 mA |
Plate Dissipation |
100 Watts |
Va |
650 V |
Ia |
90 mA |
Vg |
-15 V |
Transconductance |
4.0 mA/V |
Amplification Factor |
12 |
Filament Voltage |
10 V (DC/AC) |
Filament Current |
1.0 A |
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KR 845 |
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Low Frequency, high power, high voltage triode. 20-26 Watts of pure class-A power
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Maximum Plate Voltage |
1250 V |
Maximum Plate Current |
140 mA |
Plate Dissipation |
100 Watts |
Va |
650 V |
Ia |
90 mA |
Vg |
-68 V |
Transconductance |
3.0 mA/V |
Amplification Factor |
5.5 |
Filament Voltage |
10 V (DC/AC) |
Filament Current |
1.0 A |
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KR T100 |
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Low Frequency, high power, high voltage triode. 20-26 Watts of pure class-A power
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Maximum Plate Voltage |
1000 V |
Maximum Plate Current |
140 mA |
Plate Dissipation |
100 Watts |
Va |
650 V |
Ia |
90 mA |
Vg |
-87 V |
Transconductance |
4.4 mA/V |
Amplification Factor |
5.3 |
Filament Voltage |
5 V (DC/AC) |
Filament Current |
2.0 A |
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KR T1610 |
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Low Frequency, Ultra high power triode. 22-50 Watts of pure class-A power
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Maximum Plate Voltage |
650 V |
Maximum Plate Current |
250 mA |
Plate Dissipation |
150 Watts |
Va |
400 V |
Ia |
160 mA |
Vg |
-83 V |
Transconductance |
9.9 mA/V |
Amplification Factor |
3.7 |
Filament Voltage |
5 V (DC/AC) |
Filament Current |
3.8 A |
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Marconi "R" Valve ( TM ) |
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Marconi 'R' valve also known as the 'TM' radio repro tube
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Maximum Plate Voltage |
180 V |
Maximum Plate Current |
2 mA (Vf=4V,Vg=0V) |
Va |
120 V |
Ia |
1 mA |
Vg |
-0.5 V |
Transconductance |
0.3 mA/V |
Filament Voltage |
4 V (DC/AC) |
Filament Current |
0.6 A |
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