The JFE150 is an ultra-low noise JFET designed to create low-noise gain stages for very high output impedance sensors or microphones. Advanced processing technology gives the JFE150 extremely low-noise performance, a high gm/C_ISS ratio, and ultra-low gate-current performance. Input protection diodes are integrated to clamp high-voltage spurious input signals without the need for additional input diodes that can add leakage current or distortion-creating non-linear capacitance. The JFE150 provides a next-generation device to implement low-noise amplifiers for piezoelectric sensors, transducers, large-area condenser microphones, and hydrophones in small-package options.