The JFE150 features a maximum gate current of 10 pA at room temperature, making the device an excellent choice for maximizing the gain and dynamic range from extremely high impedance sensors. Additionally, any noise contributions as a result of gate current are minimized because of the negligible shot noise at low current levels. As with all JFET devices, when the drain-to-source voltage increases, the gate current also increases. Keep the drain-to-source voltage to less than 5 V for the lowest gate input current operation.