Description

6N3P 6Н3П 100% tested Used Soviet Oktjbr'tube = 5670 / 6385 / ECC42 2pcs./set Most of the lamps are new, but since the year of manufacture is different - we treat them as used. All tubes from this set were tested and they all showed parameters provided by the manufacturer. The tests were performed with an L1-3 tube tester.Price indicated for 2pcs./set. Year of manufacture 1967 - 1980 / Oktjbr' factory in Vinnitsa, Ukraine. In the cold war era, US 5670 tube design was copied and mass produced by the Soviets. This tube is referred to as 6N3P. These tubes were numbered using Cyrillic alphabets which has caused some confusion since it looks more like 6H3R to us westerners. Whichever way you spell it, the tube is 6N3P. And it is plug-in compatible with their American counterparts, 2C51 and 5670. 6N3P was made by several factories in Russia. We have seen them from Reflektor JSC in Saratov Russia, Voskhod JSC in Kaluga, Russia, and rare and unknown Oktjbr' factory in Vinnitsa, Ukraine, All of these factories produced 6N3P with high degree of reliability and longevity but each has characters of their own. If you are into tube rolling, it would be a lot of fun to sample 6N3P form all the factories. Parameters declared by the manufacturer : Ia = no less than 5,5 mA > the average = 8,5 mA > not more than 12 mA. S = no less than 4,1mA/V , the average = 5,9mA/V,not more than 7,8 mA/V. Key specifications for 6N3P: The filament voltage ...... 6.3 ± 0.6 V The filament current ...... 350 ± 30 mA The anode voltage nominal (constant) ...... 150 In The anode voltage limit (constant) ...... 300 In The anode current of each triode ...... 8.5 ± 3.5 mA The cathode current of each triode is limiting ...... 18 mA Grid voltage nominal (constant) ...... -2 Volts The reverse current of the grid of each triode ...... not more than 0.1 µa The power dissipated by each anode, the limit ...... 1.8 W The voltage between cathode and heater limit (DC): - at negative potential of the heater ...... 150 In - at the positive potential of the heater ...... One hundred The steepness of the characteristics of each triode ...... 5.9 ±1.9 mA The gain of each triode ...... 36 ± 8 The input impedance at the frequency of 60 MHz ...... 14 kOhm The output impedance at the frequency of 60 MHz ...... 19 com Equivalent resistance vnutrishnih noise ...... 0.7 kOhm The input capacitance of each triode ...... 2.45 ± 0.55 pF The output capacitance of each triode ...... 1.25 ± 0.35 pF The capacity of the passage of each triode ...... not more than 1.6 pF The capacitance between the anodes ...... not more than 0.13 pF * Shipping: We ship worldwide by Registered and priority Lithuania Post Delivery service. Tracking number will be provided. Tracking information : http://www.post.lt/en/help/parcel-search " RNxxxxxxxxxLT " Estimate delivery time is 10-40 working days.