6N28B-V
Double triode for low-frequency voltage amplification and generation.
Case type: with glass envelope, microminiature.
Mass 5 g.
Main parameters (at Uf = 6.3 V, Ua = 50 V, Ug = -1 V)
| Filament current, mA | 247±22 |
| Anode current, mA | 7±3 |
| 1st and 2nd triode anode current difference, mA | ≤2.5 |
| Grid reverse current, mkA | ≤0.1 |
| Cathode-to-heater leakage current, mkA | ≤20 |
| Mutual conductance, mA/V | 6.75±2.25 |
| Mutual conductance (at Uf = 5.7 V), mA/V | ≥3.6 |
| Gain ratio | 22±6 |
| Vibronoise voltage (at Ra = 5 kOhm), mV | ≤25 |
| Interelectrode capacitance, pF input output input-to-output between triode anodes | 3.3±0.7 2.2+0.6/-0.5 ≤2 ≤0.1 |
| Durability, h | ≥2000 |
| Durability criteria grid reverse current, mkA mutual conductance, mA/V mutual conductance variation | ≤1 ≥3.6 ≤+35/-40% |
Operational limits
| Filament voltage, V | 5.7..6.9 |
| Anode voltage, V | 150 |
| Anode voltage in off-state, V | 300 |
| Negative grid voltage, V | 150 |
| Cathode-to-heater voltage, V | 150 |
| Cathode current, mA | 10 |
| Anode power dissipation (each triode), W | 0.9 |
| Grid power dissipation (each triode), W | 0.1 |
| Grid circuit resistance, MOhm | 2 |
| Envelope temperature, oC at normal ambient air temperature at ambient air temperature +200 oC (not more than 50 h) | 125 240 |
| Vibratory loads frequency, Hz acceleration, g | 5..2000 15 |
| Multiple mechanical impact acceleration, g | 150 |
| Single mechanical impact acceleration, g | 500 |
| Linear acceleration, g | 100 |
| Ambient air temperature, oC | -70..+200 |
