Description
Triode-heptode for frequency conversion in broadcasting receivers and other radio engineering devices. Design - in a glass shell, miniature. Weight 20 g.
| Parameter | Conditions | 6I1P | 6I1P-V | 6I1P-EV | ECH81 | Unit rev. |
| Analog | — | — | — | — | — | — |
| Filament current | — | 300±25 | 300±25 | 300±25 | 300±25 | mA |
| Leakage current between cathode and heater | — | ≤20 | ≤20 | ≤20 | — | uA |
| triode part | ||||||
| Anode current | — | 6.8±3 | 6.8±3 | 6.8±3 | 13.5 +6 -3.5 | mA |
| Reverse grid current | — | ≤0.5 | ≤0.2 | ≤0.5 | ≤1 | uA |
| Pentode Slope | for ECH 81 with U c1 = -0.5 V | 2.2 -0.6 | 2.3 -0.6 | 2.3 -0.6 | 3.5 +1.3 -1.0 | mA/V |
| at U n = 5.7 V | ≥1.5 | ≥1.5 | ≥1.5 | — | ||
| Gain | for ECH 81 with U c1 = -0.5 V | 23±5 | 18±3 | 18±3 | 22 +5 -4 | MOhm |
| Interelectrode capacitances | input | 2.6±0.6 | 2.5±0.4 | 2.5±0.4 | 2.6±0.4 | pF |
| day off | 2±0.3 | 1.9±0.25 | 1.9±0.25 | 1.8±0.4 | ||
| checkpoint | 1±0.2 | 1.15±0.2 | 1.15±0.2 | 1.0±0.4 | ||
| Heptode part | ||||||
| Anode current | — | 3.8 +1.2 -1.6 | 3.3 +1.2 -0.4 | 3.6 +1.4 -1.5 | 6.5±2.5 | mA |
| Current of the second and fourth grids | — | 6.5 +3.5 -3 | 6±2 | 6.5 +3 -2.5 | 3.8±1.9 | mA |
| Current of the third heptode grid and triode grid | — | 200±30 | 180±30 | 180±30 | — | uA |
| Reverse current of the first grid | — | ≤0.5 | ≤0.5 | ≤0.5 | ≤1 | uA |
| Internal resistance | — | 0.7 | 0.7 | 0.7 | — | MOhm |
| Conversion steepness | at U n = 6.3 V | 0.77 -0.22 | 0.75 -0.25 | 0.75 -0.25 | 0.77 -0.17 | — |
| at U n = 5.7 V | ≥0.45 | ≥0.45 | ≥0.55 | ≥0.44 | — | |
| Interelectrode capacitances | entrance on the first grid | 5.1±1 | 5.1±1 | 5.1±1 | 4.8 +1 -0.8 | pF |
| entrance on the third grid | 6.3±1.3 | 5.9±0.9 | 5.9±0.9 | 6±1 | ||
| day off | 7.4±1.4 | 6.6±1.1 | 6.6±1.1 | 7.9 +0.9 -1.6 | ||
| checkpoint on the first grid | ≤0.006 | ≤0.007 | ≤0.007 | 0.007 | ||
| between the heptode and triode anodes | ≤0.24 | ≤0.24 | ≤0.24 | 0.2-0.3 | ||
| between heptode anode and triode grid | ≤0.1 | ≤0.1 | ≤0.1 | ≤0.09 | ||
| between the heptode anode and the third heptode grid connected to the triode grid | ≤0.35 | ≤0.35 | ≤0.35 | ≤0.35 | ||
| between the first grid of the heptode and the anode of the triode | ≤0.06 | ≤0.06 | ≤0.06 | ≤0.06 | ||
| between the first heptode grid and the third heptode grid connected to the triode grid | ≤0.45 | ≤0.45 | ≤0.45 | — | ||
| between the first heptode grid and the triode grid | ≤0.17 | ≤0.17 | ≤0.17 | ≤0.17 | ||
| Operating time | — | ≥5000 | ≥2000 | ≥5000 | — | h |
| Criteria for evaluation | ||||||
| Reverse current of the first grid of the triode | — | — | ≤1 | ≤1 | ≤2 | uA |
| Triode slope | — | ≥1.4 | ≥1.5 | ≥1.5 | ≥1.8 | mA/V |
| Heptode conversion steepness | — | ≥0.45 | ≥0.5 | ≥0.5 | ≥0.43 | mA/V |