70pcs 6F12P Soviet Brand, Vintage Russian Radio Triode Tubes, Lightly Used

Description

70pcs 6F12P Soviet Brand, Vintage Russian Radio Tubes, Lightly Used
70pcs (tubes) in one lot
Lightly Uused
Soviet Brand
DESCRIPTION:
6F12P -
Triode-pentode.
Designed for operation in frequency conversion stages and voltage amplifiers of high and low frequency in general-purpose devices.
Durability not less than 3000 hours.
Weight no more than 12.5 g.
Technical characteristics and electrical parameters:
Filament current, mA 330 ± 30
Vibration noise voltage, mV no more than 100
Leakage current between the cathode and the heater, μA no more than 20
Triode part:
Anode current, mA 12.5 ± 3.5
Grid reverse current, μA no more than 0.2
Slope of characteristic, mA / V 19 - 4
Gain 100
Input resistance, kOhm 1
Equivalent resistance of intra-lamp noise, Ohm 130
Pentode part:
Anode current, mA 13 ± 4
2nd grid current, mA no more than 2.2
Reverse current of the 1st grid, μA no more than 0.2
Slope of characteristic, mA / V 19
Input resistance, kOhm 1
Equivalent resistance of intra-lamp noise, Ohm 250
Maximum permissible electrical values:
Heater voltage, V 5.7-7.0
Anode voltage, V:
- pentode 300
- triode 250
Anode voltage when the lamp is turned on, V:
- pentode 550
- triode 550
Triode voltage with a locked lamp, V 400
2nd grid voltage, V 250
Voltage of the 2nd grid of the pentode when the lamp is turned on, V 550
Power dissipated by the anode, W:
- pentode 5
- triode 3.5
Power dissipated by the 2nd grid, W 0.4
Voltage between cathode and heater, V 160
Cathode current, mA 22
Cylinder temperature, deg. C 230
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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