8pcs. in lot  NEW TUBES

Made in USSR 



6F5P
Triod-pentode.
It is designed to work in the blocks of vertical scanning of wide-scale television devices with a beam deflection angle of 110 °.
Durability is not less than 3000 h.
Weight not more than 20 gram.

The main technical characteristics of 6F5P:
The heating voltage ...... 6.3 ± 0.6 V
Glow current ...... 900 mA

Triodic part:
The anode voltage is nominal (constant) ...... 100 V
Anode voltage limit (constant) ...... 250 V
Anode current ...... 5.5 mA
The cathode current is the limiting (average value) ...... 15 mA
The cathode current is the limiting (pulse amplitude) ...... 200 mA
Power dissipated by the anode, limiting ...... 0.5 W
The voltage between the cathode and the heater is the limiting (constant) ...... 100 V
Slope of the characteristic ...... 7 mA / V
Gain factor ...... about 70
Resistance in the cathode circuit for automatic biasing ...... 160 Ohm
The resistance in the grid is the ultimate limit:
  - with automatic displacement ...... 3.3 MΩ
  - at a fixed bias ...... 1 MΩ
Input capacity ...... 3.5 pF
Output capacity ...... 0.25 pF
Throughput capacity ...... not more than 1.8 pF

Pentod part:
The anode voltage is nominal (constant) ...... 185 V
Anode voltage limit (constant) ...... 300 V
Anode voltage limit (pulse amplitude) ...... 2 kV
Anode current ...... 41 mA
Cathode limiting current ...... 75 mA
The grid voltage is the second rated (constant) ...... 185 V
The grid voltage is the second limiting (constant) ... 250 V
The current of the grid is the second ...... about 2.7 mA
Power dissipated by the anode, limiting ... 9 W
The power dissipated by the grid is the second, the limiting ...... 2 W
Slope of the characteristic ...... 7.5 mA / V
Internal resistance ...... about 23 kΩ
Resistance in the cathode circuit for automatic bias ...... 340 Ohm
The resistance in the grid circuit is the first limit:
  - with automatic displacement ...... 2.2 MΩ
  - at a fixed bias ...... 1 MΩ
Input capacity ...... 11,7 pF
Output capacity ...... 8.8 pF
Throughput capacity ...... not more than 0,6 pF
Capacity between the anodes ...... not more than 0.4 pF
The decoration ...... is a glass miniature.


Note: I don’t match valves in pairs or quartets. There is no valve combination in the lot price. These valves have similar valves from European manufacturer. But be careful. Please don’t use datasheets of similar valves from the West. Valves from the USSR have their own datasheets and a correct valve test could only be done with their own datasheets (but not analog datasheets from similar valves).

 

The valves can be manufactured in different years. Valve pins may be dark and have some scratches. Please remember that the valves were made 40-70 years ago. The inscriptions on the valve cylinders may be dull or half-worn


IMPORTANT INFORMATION! BE SURE TO READ BEFORE ORDERING! 

In the title of the lot is the name of the vintage Soviet tube and after the symbol ~ the name of the Western analog. Be careful! Soviet tubes are only approximate analogs of Western tubes and match pinout, but are not exact copies of Western tubes. Testing Soviet tubes with Western-made tube testers can sometimes show unreliable results. Programs (Cards) designed for testing Western tubes can sometimes show unreliable results and erroneously show that the tube is not good enough. But these are unreliable results and should be disregarded. The volt-ampere characteristics of Soviet tubes are different from their Western analogs!

Use for testing exclusively testers with programs for testing Soviet tubes.


If you would like to get the datasheet for the Soviet tubes in this lot, please send me a message before you place your order and I will send you a JPG datasheet for the Soviet tube.


Also, do not test vintage tubes with modern digital pulse powered tube testers. Use only testers with a classic power supply. For reliable measurement results, warm up each tube for at least 5 minutes prior to measurement.


I do not accept any claims on the quality of tubes if you test purchased Soviet tubes of this lot on testers with programs (modes) of testing Western tubes or test tubes on digital testers with pulse power supply.

Dear customer, you can combine shipping buying more than one lot.
If You need more than one lot, or another quantity - please contact. 
Also please check other available items. 

Thanks in advance!