I am trying to build a small amplifier with a JFET J113 to get a high input impedance. I have a problem with the datasheet:
On page 3 it gives a value of IDSS=2mA for J113. However, on the following pages it shows universal curves for all three JFETs J111, J112 and J113.
On figure 5 you find that all these transistors have at least 18mA at VGS=0V.
Which value should I use? If it is the one from page 3, will I have to calculate my own curve using the general JFET-models or can I still somehow use the graphs?