LS4119A N-CHANNEL JFET Linear Systems replaces discontinued Siliconix 2N4119A The LS4119A is an Ultra-High Input Impedance N-Channel JFET The LS4119A provides ultra-high input impedance. The device is specified with a 1-pA limit and typically operates at 0.2 pA. The part is ideal for use as a highimpedance sensitive front-end amplifier. LS4119A Benefits: Insignificant Signal Loss / Error Voltage with High-Impedance Source Low Power Consumption (Battery) Maximum Signal Output, Low Noise High Sensitivity to Low-Level Signals LS4119A Applications: High-Impedance Transducer Smoke Detector Input Infrared Detector Amplifier Precision Test Equipment FEATURES DIRECT REPLACEMENT FOR SILICONIX 2N4119A LOW POWER MINIMUM CIRCUIT LOADING ABSOLUTE MAXIMUM RATINGS @ 25°C (unless otherwise noted) IDSS<90 µA IGSS<1 pA Maximum Temperatures Storage Temperature Operating Junction Temperature Maximum Power Dissipation Continuous Power Dissipation MAXIMUM CURRENT Gate Current (Note 1) MAXIMUM VOLTAGES Gate to Drain or Gate to Source (Note 2) LS4119A ELECTRICAL CHARACTERISTICS @ 25°C (unless otherwise noted) SYMBOL CHARACTERISTIC MIN TYP. BVGSS Gate to Source Breakdown Voltage ‐40 ‐‐ VGS(off) Gate to Source Cutoff Voltage ‐2 ‐‐ IDSS Gate to Source Saturation Current 0.20 ‐‐ IGSS Gate Leakage Current ‐‐ ‐‐ ‐‐ ‐‐ gfs Forward Transconductance(Note 3) 100 ‐‐ gos Output Conductance ‐‐ ‐‐ Ciss Input Capacitance ‐‐ ‐‐ Crss Reverse Transfer Capacitance ‐‐ ‐‐ ‐65°C to +175°C ‐55°C to +150°C 300mW 50mA ‐40V Click To Buy NOTES MAX ‐‐ ‐6 0.60 ‐1 ‐2.5 330 10 3 1.5 UNITS V V mA pA µmho CONDITIONS IG = ‐1µA, VDS = 0V VDS = 10V, ID = 1nA VDS = 10V, VGS = 0V VGS = ‐20V, VDS = 0V VGS = ‐20V, VDS = 0V, 150°C VDS = 10V, VGS = 0V, f = 1kHz pF VDS = 10V, VGS = 0V, f = 1MHz 1 . Absolute maximum ratings are limiting values above which LS4119A serviceability may be impaired. 2. Due to symmetrical geometry, these units may be operated with source and drain leads interchanged 3. This parameter is measured during a 2ms interval 100ms after power is applied. (Not a JEDEC condition.) Micross Components Europe Available Packages: TO-92 (Bottom View) LS4119A in TO-92 LS4119A in bare die. Tel: +44 1603 788967 Email: [email protected] Web: http://www.micross.com/distribution Please contact Micross for full package and die dimensions Information furnished by Linear Integrated Systems and Micross Components is believed to be accurate and reliable. However, no responsibility is assumed for its use; nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Linear Integrated Systems. Micross Components Ltd, United Kingdom, Tel: +44 1603 788967, Fax: +44 1603788920, Email: [email protected] Web: www.micross.com/distribution.aspx