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NR52 triode
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This valve measures 105x40mm overall and has a B5 base |
| Heater voltage | 4V |
| Heater current | 650mA |
| Max anode voltage | 250V |
| Mutual conductance * | 3.5mA/V |
| Amplification factor * | 40 |
| Anode impedance * | 11.5k ohms |
| Capacitances |
| Cag | 3.3pF |
| Cgc | 5.3pF |
| Cac | 4.2pF |
*: At Va=250, Vg=-4.5V
| Pin | Function |
| 1 | Anode |
| 2 | Grid |
| 3 | Heater |
| 4 | Heater |
| 5 | Cathode + metallising |
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