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Tetrodes Power Tubes (Matched Quad)
These Shuguang KT66 tubes are power tetrodes, ideal for HiFi design or as replacements for similar models. They are sold factory matched by four units.
| Specifications | |
|---|---|
| Product type | Power tubes |
| Tube type | Tetrode |
| Quantity | Sold by four matched units |
| 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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