6K13P = EF89 / EF183 / EF85 / EF865 Soviet HF Pentode Vacuum Tube NEW 8pcs 1970s

Tubes never used, old stock, made at Factory in USSR
Equivalent to the = EF89 /EF183/ EF85 /EF865
Date: all - 1970's
Lot of 8 tubes, TESTED.

The main technical specifications for 6K13P:
The heating voltage ...... 6.3 ± 0.6 V
Current of glow ...... 300 mA
The anode voltage is nominal (constant) ...... 200 V
Anode voltage limit (constant) ...... 250 V
Anode current ...... 12 mA
Cathode limiting current ...... 20 mA
The grid voltage is the second rated (constant) ...... 90 V
The grid voltage is the second limiting (constant) ... 250 V
Current grid second ...... 4.5 mA
Power dissipated by the anode, limiting ...... 2.5 W
The power dissipated by the grid is the second, the limiting ... 0.65 W
Slope of the characteristic ...... 12.5 mA / V
Internal resistance ...... 500 kΩ
Input resistance at 40 MHz ... 7.5 kΩ
Equivalent resistance of intra-lamp noise ...... 450 Ohm
Resistance in cathode circuit for automatic bias ...... 120 Ohm
Resistance in the grid circuit is the first limit ... 1 MΩ
Input capacity ...... 10.2 pF
Output capacity ...... 3.3 pF
Throughput capacity ...... not more than 0,006 pF
The decoration ...... is a glass miniature.

REAL PHOTO!

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