PLEASE, READ CAREFULLY EVERYTHING. IT IS IMPORTANT.
Tube is tested with professional tube Tester L3-3. 100 % in norm.
Va = 250 V, Vf = 6.3 V, Rc = 600 Ohm, la min/max acceptable value = (6 - 9) mA.
Warning! Tubes are matched by electrical parameters (Ia), not by year manufacture or producer.
Difference < 1%
Ia1 / Ia2 tube1 Ia1 / Ia2 tube2 | pcs
1. 7.2 / 7.0 mA 7.2 / 7.2 mA 2
2. 7.2 / 7.2 mA 7.2 / 7.4 mA 4
3. 7.2 / 7.4 mA 7.2 / 7.6 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).
Russian tubes - Last Letter – Meaning:
V (B), R (P) - Tubes of increased reliability and mechanical strength.
E - Long-life tubes with guaranteed life of more than 5,000 hours.
EV (EB) - Tubes of increased reliability, mechanical strength guaranteed life of more than 5,000 hours.
D (Д) - Extremely durable tubes with guaranteed life of more than 10,000 hours.
DR (ДР) - Tubes of special reliability, mechanical strength and guaranteed life of more than 10,000 hours.
I (И) - Tubes designed to operate in pulsed mode, characterized by increased emissivity of the cathode.
K - Tubes with high vibration resistance.
Double triode, EXTRA-durable, long-life ( > 5000 h).
High quality. Made in
Application LF voltage amplification.
Cathode type oxide, indirect heating .
Filament voltage – 6.3 V.
Filament current – (0.55-0.65) A.
Anode voltage - 250 V.
Anode current – (6 – 9) mA.
Anode power – 2.2 W.
Steepness – (3.8-5.1) mA/V.
Reverse grid current – 0.2 uA.
Microphnic noise - < 50 mV.
Gain – (28.0 – 42.0).
Weight: ~14 grams
PLEASE, READ CAREFULLY!
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 % |
Thanks And Good Luck!