NJK1120A High Current Density Small Dispenser Cathode ---- Features ---Stable emission: Cathode current 170mA (Dk=10A/Square Centimeters) at Cathode temperature 1050 degree centigrade brightness. Long life: Stable operation more than 10000 hours with more than 95% of original cathode current. Stable operation after exposed to the air repeatably. Improved to suppress excessive Ba evaporation. ---- Applications ---High brightness and high resolution display cathode ray tube (CRT). Electronic heating Other special purpose tubes. ---- Specification ---Item Min 170 (Note 1) 10 (Note 1) Max Unit - mA - A/square centimeters Heater resistance (R) 3.8 4.1 ohm 25 degree centigrade Heater current (If) 285 315 mA Tk=1050 degree centigrade Cathode temperature (Tk) 1020 1060 degree centigrade - 20 uA Cathode current (Ik) Cathode current density (Dk) Leak current between cathode and heater(Ihk) Test condition Tk=1050 degree centigrade Ef=6.3V Ef=6.3V Ehk=+200/-200V Note 1.; These values may be changed by assembling structure of electron gun anode. Note 2.; This product is an export control article provided in “foreign exchange and foreign trade law” of Japan. When exporting of product, please comply with the domestic laws. Rev.2 NJK1120A