I was testing few types of transistors on my newly acquired peak atlas pro and came across some N-channel depletion mode JFETs marked 2n3819. To my surprise the device indicated they are NPN BJTs. Using my fluke multimeter in diode mode, the voltage drop from centre pin (2) to other two (1,3) was a normal diode voltage drop for each pair and also resistance between 1 and 3 was OL. I understand that if they were real JFETs, the resistance between drain and source would be low, which is not the case for these transistor as they showed OL. Additionally, Peak atlas showed the parameter as hFE=286 at Ic=5mA, Vbe= 0.749v at IB=5Am etc. I am confused, according to the peak atlas manual, the analyser should be able to identify and analyse JFETS. Are my transistors faulty or fake ?