Quality  6F4P Triode- Phentode tubes

Equivalent to the ECL84 / 6DX8 / 6DQ8        

  Technical characteristics:

Filament voltage ...... 6,3 ± 0,6 in

Heater current ...... 720 ± 60 mA

Triode part:

Nominal voltage of the anode (DC) ...... 200

Anode voltage limit (DC) ...... 250

Anode ...... 3 ± 0,9 mA

Cathode current limit ...... 12 mA

The power dissipated by the anode, the limit ...... 1 W

Slope ...... 4 ± 1 mA /

The gain ...... 65

Resistance in the cathode circuit to automatically bias ...... 600 Ohm

Grid circuit resistance limit ...... 1 M

Input Capacity ...... 4 pF

Output Capacity ...... 0.6 pF

Capacity-through ...... 2.7 pF

Pentode part:

Nominal voltage of the anode (DC) ...... 170

Anode voltage limit (DC) ...... 250

Anode ...... 18 ± 6 mA

Cathode current limit ...... 40 mA

Second nominal grid voltage (DC) ...... 170

A second threshold voltage grid (DC) ...... 250

Grid current second ...... not more than 7 mA

The power dissipated by the anode, the limit ...... 4 W

The power dissipated by the second grid, the limit ...... 1.7 W

Slope ...... 11 ± 9,5 mA / V

Internal resistance ...... 100 k

Resistance in the cathode circuit to automatically bias ...... 100 Ohm

Resistance in the grid of the first limit ...... 1 M

Input Capacity ...... 9.5 pF

Output Capacity ...... 4 pF

Capacity-through ...... not more than 0.1 pF

Made in USSR

   NOS  

LOT 10pcs. 

Thanks And Good luck!