U426

U426 HIGH INPUT IMPEDANCE MONOLITHIC DUAL N-CHANNEL JFET Linear Systems replaces discontinued Siliconix U426 The U426 is a high input impedance Monolithic Dual N-Channel JFET The U426 monolithic dual n-channel JFET is designed to provide very high input impedance for differential amplification and impedance matching. Among its many unique features, this series offers operating gate current specified at -500 fA. The U426 is a direct replacement for discontinued Siliconix U426. The hermetically sealed TO-71 & TO-78 packages are well suited for military applications. The 8 Pin P-DIP and 8 Pin SOIC provide ease of manufacturing, and the symmetrical pinout prevents improper orientation. (See Packaging Information). FEATURES  HIGH INPUT IMPEDANCE  HIGH GAIN  LOW POWER OPERATION  ABSOLUTE MAXIMUM RATINGS   @ 25°C (unless otherwise noted)  IG = 0.25pA MAX  gfs = 120µmho MIN  VGS(OFF) = 2V MAX  U426 Applications: ƒ ƒ ƒ Ultra Low Input Current Differential Amps High-Speed Comparators Impedance Converters Maximum Temperatures  Storage Temperature  ‐65°C to +150°C  Operating Junction Temperature  +150°C  Maximum Voltage and Current for Each Transistor – Note 1  ‐VGSS  Gate Voltage to Drain or Source  40V  ‐VDSO  Drain to Source Voltage  40V  ‐IG(f)  Gate Forward Current  10mA  Maximum Power Dissipation  Device Dissipation @ Free Air – Total                 400mW @ +125°C  MATCHING CHARACTERISTICS @ 25°C UNLESS OTHERWISE NOTED SYMBOL  CHARACTERISTICS  VALUE  UNITS  CONDITIONS  |∆V GS1‐...