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Introducing the LSBF862: A Next-Generation Low-Noise JFET for High-Precision Analog Designs


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When NXP discontinued the BF862, engineers around the world were left searching for a true low-noise replacement that preserved performance, ensured long-term supply continuity, and avoided expensive redesigns.


Linear Integrated Systems is proud to introduce the LSBF862, a precision N-channel JFET engineered not just to replace the BF862 — but to outperform it across noise, breakdown voltage, and customizability.



Why the LSBF862 Matters


The discontinuation of the NXP BF862 created major challenges for designers working in audio, instrumentation, medical, sensing, and underwater acoustic applications. Many teams were forced into last-minute lifetime buys or faced the costly task of requalifying new components.


The LSBF862 eliminates those risks — delivering improved performance and guaranteed long-term availability for your legacy and next-generation designs.


Key Performance Advantages


Ultra-Low Noise


  • 4.0 nV/√Hz @ 10 Hz (Max): Perfect for ultra-low-signal environments, high-sensitivity amplifiers, and precision front-ends.


Higher Breakdown Voltage


  • Minimum BVGSS = 40V: Supports robust, stable operation in demanding analog circuits.


High Gain & Low Capacitance


  • Yfs = 45mS (typ)

  • Ciss = 10pF (typ): Ideal for preserving signal fidelity and maximizing bandwidth.


Radiation-Tolerant JFET Process


Provides reliable behavior in harsh and mission-critical environments.


Special Testing Options


  • Available for Vgs(off) and IDSS

  • Supported in SOT-23 (3L) and bare-die formats. Perfect for engineers who require tighter specifications or matched performance.


Where the LSBF862 Excels


This device is purpose-built for high-precision analog applications, including:


  • Low-Noise Amplifiers (LNAs)

  • Discrete op amp designs

  • Photo-diode and TIA stages

  • High-impedance probes

  • Acoustic and hydrophone preamps

  • Battery-powered instrumentation

  • Ultra-sensitive sensors

  • Audio front-ends

  • Medical electronics

  • Test & measurement systems


If your design demands low noise, stability, and long-term sourcing, the LSBF862 belongs in your evaluation pipeline.


Pricing & Availability


  • USD $1.35 each (1,000+ piece pricing)

  • Samples and full production quantities available now

  • Delivery: Factory stock to 8 weeks

  • Available directly through Linear Integrated Systems and our authorized distributors.



A Word From Our CEO

“The LSBF862 gives design engineers and procurement departments higher performance and long-term supply continuity.”— Cindy Johnson, CEO, Linear Integrated Systems

Learn More


Explore the full details in our official press release here:🔗


 
 
 
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