10pcs 6K4P Novosibirsk Soviet Vintage High Frequency Pentode Tubes, New

Description

10pcs 6K4P Novosibirsk Soviet Vintage High Frequency Pentode Tubes, New
10pcs (tubes) in one lot
New
DESCRIPTION:
6K4P -
Miniature high frequency pentode with extended response.
Designed to amplify high frequency voltage.
Durability not less than 1250 hours.
Weight no more than 13 g.
Electrical Rating:
Filament voltage 6.3 ± 0.6 V
Filament current 300 ± 25 mA
Nominal anode voltage (constant) 250 V
Anode voltage limit (constant) 300 V
Anode current 10 ± 3.3 mA
Cathode current limit 20 mA
The reverse current of the first grid is not more than 0.5 μA
Grid voltage second rated (constant) 100 V
Grid voltage second limit (constant) 125 V
Second grid current 3.7 ± 1.3 mA
Power dissipated by the anode, limiting 3 W
The power dissipated by the second grid, the limit is 0.6 W
The voltage between the cathode and the heater limit (constant) 90 V
Slope 4.4 ± 0.9 mA / V
Internal resistance not less than 0.45 MΩ
Input impedance at 60 MHz 19 kΩ
Resistance in cathode circuit for automatic bias 68 Ohm
Resistance in the grid circuit of the first limiting 0.5 MΩ
Input capacitance 6.4 pF
Output capacitance 6.7 pF
Passage capacity no more than 0.0045 pF
Glass miniature decoration
DELIVERY:
Dear customers, we ship via International Airmail.
Perfect and safely shipping. Tracking number is always provided.
We use standard mail service for shipping all tubes/valves.
We ship from Ukraine.
Important note - all international mail services are currently working, so purchased items will 100% be shipped to your location!
We combine lots to save you money on delivery.
Parcels are divided into categories depending on the weight ( product + package weight).
Delivery prices:
0-250 grams - 7.9-10 $
Package weight (50 grams)
250-500 grams - 14 - 16 $
Package weight (100 grams)
500-1000 grams - 24-28 $
Package weight (200 grams)
Every next kilogram + $ 10 and + 200 grams of weight.
You will be able to choose the most favorable ratio of price, product and cost.
The price of delivery has increased significantly, but we try to almost not change the cost of delivery.
If you accidentally overpaid for delivery, we will refund your money.
If you have any questions, we are always ready to communicate and help you.
However, some delays in both Standard and Express services may happen.
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