LSK170 Series – Ultra-Low Noise JFETs for Precision Design
- JC - Linear Systems
- Aug 25
- 1 min read

Analog Performance Without Compromise
In today’s world of high-resolution audio, sensitive instrumentation, and precision sensing, one component can make all the difference between a good design and a great one. The LSK170 Series from Linear Systems delivers ultra-low noise performance, exceptional linearity, and the flexibility engineers need to push their designs further.
Why Engineers Choose LSK170
Ultra-Low Noise Floor – Just 1 nV/√Hz at 1 kHz ensures pristine signal fidelity.
Wide IDSS Selection – Multiple bins for easier circuit biasing and consistent results.
High Input Impedance & Low Capacitance – Perfect for high-impedance sources and sensitive measurement systems.
Pin-for-Pin Compatibility – Direct replacement for Toshiba 2SK170, with enhanced performance.
Flexible Packaging – Available in TO-92, SOT-23, SOT-89, and bare die (die form) for maximum design versatility.
Built for the Most Demanding Applications
Whether it’s audio preamps, hydrophones, CT scanners, vibration sensors, or electrometers, the LSK170 thrives in environments where every nanovolt matters. Its proven reliability, U.S. manufacturing, and virtually zero popcorn noise make it the choice of professionals and DIY enthusiasts alike.
Why LSK170 Matters Today
Classic JFET performance meets modern manufacturing. By combining high transconductance, robust breakdown voltage, and industry-leading noise performance, the LSK170 keeps analog design relevant—and powerful—in today’s high-tech world.
Want to See the LSK170 in Action?
We’re offering free samples to qualified engineers who want to evaluate the LSK170—or other Linear Systems parts—in their own designs.
Have technical questions, need a quote, or looking for more information? Our engineers are here to help:
📞 Call us at (510) 490-9160 or 📧 Email support@linearsystems.com