Electon tube 6J11P-E (6Ж11П-Е) is a high frequency pentode with maximum anode dissipation of 4,9 W. It is very similar to the E280F tube and it has also the same pinout. Both have the same heater voltage: 6,3V. Nominal transconductance value is 28 mA/V ( E280F has 26 mA/V). Nominal value of the anode current is 25 mA (E280F has 20 mA). Optimal heater current is about 440 mA (E280F has optimal heater current about 315 mA). And yes it is very often compared to the E180F, but equivalent of the E180F is the 6J9P (6Ж9П) tube. Service life guarantee is more than 5000 hours (with the prescribed conditions). New in box tubes, directly from the factory packing. Made in the 80's (please see the gallery).