ECH84
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Triode Heptode
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Synch Separator
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6.3 V, 0.3 A Heater
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Base B9A
Rating
| (Triode) Pa(max) | 1.3 | W |
| (Heptode) Pa(max) | 1.7 | W |
Characteristics
| Triode | Heptode | ||
| Va | 50 | 135 | V |
| Vg3 | ... | 0 | V |
| Vg2+g4 | ... | 14 | V |
| Vg1 | 0 | 0 | V |
| Ia | 3 | 1.7 | mA |
| Ig2+g4 | ... | 0.9 | mA |
| gm | 3.7 | 2.2 | mA/V |
| ยต | 50 | ... |