LOT 28 pcs. 6K4P = EF93, 6BA6, W727 Pentode Tube NEVZ Soviet 1950-80's USED
$ 18.48
Description
LOT 28 pcs. 6K4P = EF93, 6BA6, W727 Pentode Tube NEVZ Soviet 1950-80's USED Year would be from 50's to 80's 6К4П: Filament voltage 6.3 V The anode voltage of 250V Second grid voltage 100V Filament current 300±30mA 300±25mA Anode current 10±3mA Second grid current <5.5 mA The steepness of the characteristics 4.4±0.9 mA/V The steepness of the characteristics at UN=5,7 V >2.8 mA/V >3.0 mA/V The steepness at the beginning of the characteristic (Uc1=-20V) 0.04 mA/V First grid reverse current <1.0 µa <0.3 µa The cut-off voltage of the electronic current of the first mesh < -1.5 V Resistance in the cathode circuit for automatic displacement of 68 ohms Internal resistance of about 850Ком about 450Ком Input impedance (at f=60MHz) type. 19kom >2kom (type. 5kω) Voltage fibrosum (Ra=10kOhm) <400mV <180мВ Input capacitance 6pf 6.4±0.8 pF The output capacitance of 6.3 pF 6,7±1,1 pF Internal capacitance <0,0045 pF Capacitance cathode-heater is a 5.5 pF to 5.5 pF Operating time 1000h 5000h --------------------------------------------------------------------------------------------------------------------------------------------------- Import duties, taxes and chargers 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. Combine shipping is accepted. If you need less or more items of this type, or if you need add some other items, contact us, and we will make special listing for you. Give us the list of items you need, and we'll do the rest. We have many other vacuum tubes for audio and other, ask us if you need any of them. Items are shipped from Lithuania Post (Europe Union) via expedited International tracking. Returns We guarantee you complete satisfaction with all our high quality products. If you receive an item you did not order, or if an item you ordered is received damaged or defective, we will refund you the price you paid for it or replace it with identical one. The item should come to the above address within 30 days after you received it. After 30 days we will no longer be responsible and the item won't be taken back. Item for returning must have the original tags and packing, otherwise it won't be accepted.
