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About item: 6F6С Output pentode with indirect filament oxide cathode in a glass shell with octal cap.

Tube is tested with professional tube Tester L3-3.

Vf = 6.3 V, Va = 250 V, Vg1 = -16.5 V, la min/max acceptable value Ia = (25 - 46) mA.

Warning! Tubes are matched by electrical parameters (Ia), not by year manufacture or producer.

    Ia tube  Ia tube 2  | pcs

1. 36 mA     37 mA       4

2. 40 mA     41 mA       2

3. 42 mA     43 mA       2

We have these number of measured items in stock.

Please select pair of the list and write to us.

Price is for one matched pair (2 items).

Designed to amplify low frequency power in the output single-stroke and two-stroke circuits of bass amplifiers.
The 6F6S pentode is used in sound reproducing, receiving equipment and other general-purpose radio engineering devices.
Cathode oxide of indirect filament.
Works in any position.
Available in glass design.
The plinth is 6-pin octal with a key.
Overall dimensions of the pentode 6F6S:
- lamp height - 83 mm;
- lamp diameter - 33 mm.
Operating time at least 500 h.
Foreign analogue of the lamp 6F6C: 6F6G, 6F6GT, KT63, N63, 1621, 1611.

Decoding of the marking of the pentode:
6F6S
6 - a number indicating the rounded value of the filament voltage of the lamp in volts;
F is the letter defining the type of lamp: F is the pentode triode;
6 is the number of serial number of the development of this type of lamp;
C is a letter characterizing the design: C is a lamp in a glass shell, with or without a plinth, with a cylinder diameter of more than 22.5 mm.
Technical characteristics and electrical parameters of the lamp 6F6S:
• Filament voltage, V: 6.3 
• Filament current, mA: 700 
• Voltage at the anode, V: 250 
• Voltage on the second grid, V: 250 
• Displacement voltage on the first grid, V: -16.5 
• Current in the anode circuit, mA: 34 
• Current in the circuit of the second grid, mA: 7 
• Steepness of characteristics, mA/V: 2.5 
• Internal resistance, kOhm: 78 
• Load resistance, kΩ: 7 
• Output power, W: 3.2

Weight: 50 grams


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SHIPPING METHODS:

1. Europe - Economy International Shipping - no tracking number.
If you wish faster delivery and tracking number, please select STANDARD International Shipping.
2. Worldwide - Standard International Shipping - with tracking number included in the cost of shipping.
3. Any order above $ 60 US - with tracking number included in the cost of shipping.

The ESTIMATED delivery time varies from 7 to 45 working days (9 weeks) to most of the countries.

Detailed info you can find in the table below.

Delivery time
% of shipments that arrive in the said delivery time
Country working days (without holidays and weekends)
<15 15-24 25-34 35-45 >45
<3 weeks 5 weeks 7 weeks 9 weeks >9 weeks
Canada, United States 5 % 85 % 7 % 3 % 0 %
Africa, South America 5 % 20 % 55 % 20 % 0 %
Japan, South Korea 10 % 85 % 5 % 0 % 0 %
Taiwan, Thailand 5 % 45 % 45 % 5 % 0 %
China, India 5 % 40 % 50 % 5 % 0 %
Indonesia, New Zealand 5 % 40 % 50 % 5 % 0 %
Israel 5 % 65 % 30 % 0 % 0 %
Australia 5 % 55 % 35 % 5 % 0 %
Russia 5 % 50 % 40 % 5 % 0 %
Europe 60 % 35 % 5 % 0 % 0 %
Others, not entered shall, countries 5 % 20 % 55 % 20 % 0 %
Items are generally shipped out within 24 (rarely 48) hours after payment has been confirmed (Holidays, Sat. & Sun. excluded). The delivery time depends on the destination, holidays, customs clearance factor and other factors.
Please, if you have a problem, DO NOT OPEN CASE on eBay before this period has elapsed or before you communicate with us.
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INTERNATIONAL BUYERS – PLEASE NOTE: Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer’s responsibility. Please check with your country’s customs office to determine what these additional costs will be prior to bidding/buying.
ADDITIONAL INFORMATION & QUESTIONS: The pictures are for general information only. They do not carry technical information. I apply maximum efforts to work better and better. It is very important for me to get your feedback to know, whether you are really satisfied completely! Please, contact us if you have questions - especislly in the delivery term. Please use the link "Ask seller a question".
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Thanks And Good luck!

102304_M