CV1581 / VR99A / 10E/757 triode/hexode
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This valve measures 106x35mm overall and has an octal base. |
This is an unmetallised version of the ECH35.
| Heater voltage | 6.3V |
| Heater current | 300mA |
| Hexode section | |
| Max anode voltage | 300V |
| Max screen voltage | 100V |
| Max anode dissipation | 1.2W |
| Anode current (see note A) | 2.2mA |
| Conversion conductance (see note A) | 650µA/V |
| Triode section | |
| Max anode voltage | 150V |
| Max anode dissipation | 1.5W |
| Capacitances | |
| Hexode Cag | 0.0035pF |
| Hexode Cae | 10.0pF |
| Hexode Cge | 4.8pF |
| Triode Cge | 8.4pF |
(Data from ECH35)
A: Measured at Va=300V, Vg2/4=100V, Vg1=-4V, Vao=150V, Vgo=-3V
| Pin | Function |
| 1 | n/c |
| 2 | Heater |
| 3 | Hexode anode |
| 4 | Screen grid (G2, 4) |
| 5 | Oscillator grid (G0, 3) |
| 6 | Oscillator anode (A0) |
| 7 | Heater |
| 8 | Cathode |
| TC | Signal grid (G1) |
