FJX597JHTF

The FJX597JHTF is an N-Channel Junction Field-Effect Transistor (JFET) manufactured by On Semiconductor. It is designed for applications requiring low power consumption and high input impedance, such as audio and telephone capacitor microphones. The device is characterized by a drain-source voltage (Vds) of 20 V and a drain current (Id) of 1 mA.

Key electrical specifications include a gate-source cut-off voltage (VGS(off)) ranging from -0.6 V to -1.5 V, a drain current (IDSS) of 150 µA to 240 µA at VDS=5V, and a forward transfer admittance (|yfs|) of 0.4 mS to 1.2 mS. The input capacitance is 3.5 pF and output capacitance is 0.65 pF, making it suitable for high-frequency signal processing. The absolute maximum ratings include a gate-drain breakdown voltage of -20 V, gate current of 10 mA, and power dissipation of 100 mW. The junction temperature can reach up to 150°C, with a storage temperature range of -55°C to 150°C.

The FJX597JHTF is supplied in a surface-mount SC-70 (SOT-323) package, which is compact and suitable for automated assembly. The device is marked with code SCB. It is particularly suited for use in audio, telephone capacitor microphones due to its excellent voltage and transient characteristics. The part is RoHS3 compliant and REACH unaffected, although compliance data is unverified from the manufacturer.