UBF89
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Double Diode HF Pentode
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Variable-mu Amplifier
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19 V, 0.1 A Heater
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Base B9A
Rating (Pentode)
| Pa(max) | 2.25 | W |
Characteristics (Pentode)
| Va | 200 | V |
| Vg2 | 100 | V |
| Vg1 | -1.5 | V |
| Ia | 11 | mA |
| Ig2 | 3.3 | mA |
| Rg2 | 30 | kΩ |
| Rk | 105 | Ω |
| gm | 4.5 | mA/V |
Double Diode HF Pentode
Variable-mu Amplifier
19 V, 0.1 A Heater
Base B9A
| Pa(max) | 2.25 | W |
| Va | 200 | V |
| Vg2 | 100 | V |
| Vg1 | -1.5 | V |
| Ia | 11 | mA |
| Ig2 | 3.3 | mA |
| Rg2 | 30 | kΩ |
| Rk | 105 | Ω |
| gm | 4.5 | mA/V |