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SHUGUANG KT66 Tetrodes Power Tubes (Matched Pair)
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Shuguang KT66
Tetrodes Power Tubes (Matched Pair)
These Shuguang KT66 tubes are power tetrodes, ideal for HiFi design or as replacements for similar models. They are sold factory matched in pairs.
Technical characteristics
| Specifications | |
|---|---|
| Product type | Power tubes |
| Tube type | Tetrode |
| Filament heating | |
|---|---|
| Uh | 6.3V |
| Ih | 1.27A |
| Limit values | ||
|---|---|---|
| Tetrode configuration | Triode configuration | |
| Plate voltage | 500V | 400V |
| Plate dissipation power | 25W | 25W |
| Grid 2 voltage | 400V | |
| Grid 2 dissipation power | 35W | |
| Cathode current | 200mA | |
| Heater voltage between cathodes | ±100V | |
| Grid 1 resistance | Fixeed bias : 0.1MΩ Self-bias : 0.5MΩ | |
| Capacitances | ||
|---|---|---|
| Tetrode configuration | Triode configuration | |
| Input capacitance | 16pF | 8.7pF |
| Output capacitance | 11.5pF | 15.8pF |
| Muller capacitance | 1.1pF | 7.2pF |
| DC Parameters | |
|---|---|
| Ua | 250V |
| Ug2 | 250V |
| -Ug1 | 15V |
| Ia | 85mA |
| Ig2 | 6.3mA |
| Gm | 6.3mA/V |
| ri | 22.5kΩ |
| RL | 2.2kΩ |
| Pout | 7.25W |
| Dtot | 9% |
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