The 2N5301 is a very High Input Impedance N-Channel JFET amplifier

The 2N5301 N-channel JFET is designed to provide performance amplification at low frequencies and with low noise.

FEATURES
    DIRECT REPLACEMENT FOR LF5301 & PF5301
    HIGH INPUT IMPENDANCE IG = 0.100 pA
    HIGH GAIN gfs = 70 µS

2N5301 Benefits:
◾ Insignificant Signal Loss/Error Voltage with High-Impedance Source
◾ Maximum Signal Output, Low Noise
◾ High Sensitivity to Low-Level Signals

2N5301 Applications:
◾ High-Impedance Transducer
◾ Smoke Detector Input
◾ Infrared Detector Amplifier
◾ Precision Test Equipment