NOS 6F3P USSR Svetlana Triode-Pentode tubes. 

Two tubes in one lot!

All tubes are in great condition, tested and matched. 

We ship via International Airmail from Kyiv. 

Tracking number is provided.

The 6F3P triode-pentode is designed to work in ULF and frame scan units of television receivers, in conversion stages of superheterodyne receivers.  

Pin assignment 6F3P: 

1 mesh triode 

2 pentode cathode 

3 first mesh pentode 

4 glow 5 glow 

6 pentode anode 

7 second mesh pentode 

8 cathode triode 

9 anode triode 

The 6F3P tube is made in a 9-pin glass finger housing and works in any position. Indirectly heated oxide cathode.    

General parameters of 6F3P lamp: 

Filament voltage 6.3 ± 0.6V 

Filament current 850 ± 80mA 

Maximum power dissipation 4.5W 

Capacitance between the anodes 0.02pF 

Service life> 500h 

Weight 20g

Parameters of 6F3P tube triode: 

Nominal anode voltage 170V 

Anode voltage maximum 250V 

Grid voltage nominal -1.5V 

Anode current 2.5 ± 1.2mA 

Cathode current limiting 15mA 

Anode power, limit 1.0W 

Slope 2.5 ± 1.2mA / V 

Gain about 75 

Limiting resistance in the grid chain: at a fixed offset with automatic offset 1.0MΩ 3.0MΩ 

Input capacitance 2.2pF 

Output capacitance 0.4pF 

Throughput capacity 3.7pF

Parameters of 6F3P tube pentode: 

Nominal anode voltage 170V 

Anode limit voltage 275V 

Anode current 41 ± 13mA 

Cathode current limit 60mA 

The nominal voltage of the first grid is -11.5V 

Second grid voltage nominal 170V 

Second grid limit voltage 250V 

Maximum power at the anode 8W

Maximum power on the second grid 2.5W 

Second grid current 14mA Slope 7 ± 2mA / V 

Maximum resistance in the first mesh circuit: at a fixed offset with automatic offset 0.5MΩ 1.0MΩ 

Internal resistance 15Com 

Input capacitance 9.3pF 

Output capacitance 8.5pF 

Throughput capacity 0.3pF

Important notice for buyers from Canada -shipping to central and western provinces of Canada may take up to 2 months! 

Important information for buyers from Australia, Oceania, Central Africa and South America: due to increased shipping cost to these regions, shipping price is calculated individually. 

!!!Dear buyers, despite Russia's treacherous invasion of Ukraine, 

delivery is currently working!!!

Some minor delays in the delivery may happen.