6N1P
6N1P has no equivalent designation confirmed by the archive. Completed sales put the typical price at $15.96 per tube.
Description
The 6N1P is a double triode designed for low-frequency voltage amplification. It has an indirectly heated, oxide-coated cathode and a 9-pin base. Pin 1 is triode 1 anode, pin 2 triode 1 grid, pin 3 triode 1 cathode, pins 4 and 5 are the heater, pin 6 triode 2 anode, pin 7 triode 2 grid, pin 8 triode 2 cathode, and pin 9 is the screen. The tube has a mass of at most 15 g.
Ratings
The heater is rated at 6.3 V with a current of 600 ± 50 mA; the permissible heater voltage range is 5.7 to 6.9 V. The anode voltage is 250 V, with a maximum permissible anode voltage of 300 V. The maximum permissible cathode current is 25 mA, and the maximum permissible power dissipation at the anode of each triode is 2.2 W. The maximum permissible voltage between cathode and heater is 100 V with the heater at positive potential and 250 V with the heater at negative potential. The maximum permissible resistance in the grid circuit of each triode is 1 MΩ.
Characteristics
At the rated anode voltage, the anode current is 5.6 to 10.5 mA, the transconductance is 3.5 to 5.5 mA/V, and the amplification factor is 35 ± 8. The resistance in the cathode circuit is 0.6 kΩ. The inverse grid current with 1 MΩ resistance in the grid circuit is ≤ 1 μA. After 5000 operating hours, the transconductance is ≥ 3 mA/V.
Capacitances
Input capacitance is 3.1 ± 1.1 pF, transfer capacitance is ≤ 2.7 pF, and output capacitance is 1.6 ± 0.5 pF for the first triode and 1.7 ± 0.5 pF for the second triode. Capacitance between the first triode anode and the second triode anode is ≤ 0.2 pF.
Environmental Ratings
The 6N1P is rated for ambient temperatures from -45 to +70 °C and for relative humidity up to 98% at temperatures up to 25 °C. It is rated for vibration loads at frequencies from 1 to 200 Hz with acceleration up to 5 g, and for multiple impact loads with acceleration up to 15 g.
| Measure | Per tube |
|---|---|
| Median | $15.96 |
| Typical range (25th–75th) | $7.45 – $21.22 |
| Most sales (10th–90th) | $4.40 – $28.23 |
| Extremes incl. outliers | $1.20 – $102.98 |
| Completed sales | 92 |
| Brand | Median | Range | Sales |
|---|---|---|---|
| Sovtek | $25.00 | $23.34 – $46.16 | 5 |
| Svetlana | $16.75 | $16.00 – $22.97 | 4 |
| Voskhod | $17.36 | $16.23 – $18.75 | 4 |
| Condition | Median | Sales |
|---|---|---|
| NOS | $15.98 | 69 |
| used | $14.03 | 12 |
| current | $19.45 | 5 |
Per-tube prices from completed sales, 2025-10-06 to 2026-10-17. Matched pairs and quads are divided out. See the price index for how these move over time.
Documents held here and used to write this page.
- двойной триод DOUBLE TRIODE