4pcs 6A7 (6SA7, 6А7) USSR Heptode Tube, Metal Valves, Russian Vacuum Tubes, NOS

Description

4pcs 6A7 (6SA7, 6А7) USSR Heptode Tube, Metal Valves, Russian Vacuum Tubes, NOS
4pcs (tubes) in one lot
NOS (New Old Stock)
-
You buy what you see at the photo
Soviet
Brand
DESCRIPTION:
6A7 -
Heptode 6A7 for frequency setting.
It is used in superheterodyne receivers and power supply measuring equipment.
Indirectly heated oxide cathode.
Works in any position.
Available in a metallic finish.
Service life is not less than 500 hours.
Technical characteristics and electrical parameters:
• Heater voltage 6.3 ± 0.6 V
• Filament current 300 ± 25 mA
• Nominal anode voltage 250 V
• Anode voltage limit 330 V
• Anode current 3.5 ± 1 mA
• Cathode current limiting 15.5 mA
• Grid current of the first 0.51 ± 0.13 mA
• The voltage of the second and fourth grids is rated 100 V
• Voltage of grids of the second and fourth limit 110 V
• The current of the second and fourth grids is 9 ± 2.5 mA
• Voltage of grids of the third and fifth 0 V
• Reverse current of the third grid 2 μA
• Power dissipated by the anode, limiting 1.1 W
• Power dissipated by grids 2 and 4, limit 1.3 W
• The voltage between the cathode and the heater limit 100 V
• Conversion slope 450 ± 150 μA / V
• The slope of the LO characteristic is 4.7 ± 1.2 mA / V
• Internal resistance 0.3 MΩ
• Input capacitance 9.5 ± 1.9 pF
• Output capacitance 7 ± 3.6 pF
• Capacitance through passage 0.13 pF
• Metal 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.
ANY QUESTIONS?!
Direct in eBay messages and we will help you