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LTspice Press Release

Mar 17, 2023

Linear Systems' JFETs in LTspice

LTspice® Designers Now Have Access to Industry's Lowest Noise Parts

FREMONT, Calif., March 3, 2020 /PRNewswire/ -- Linear Systems is announcing the inclusion of models for its JFET, bipolar and small-signal MOSFETs in the LTspice® embedded library.  Linear Systems' JFETs are now the primary selection option in LTspice®, and the company's other parts are also among the highest-performance options available in the simulation program's library.

"LTspice® is the premiere circuit simulation software, and we're extremely please to be included in the new release," said Linear Systems President Tim McCune.  "Linear Systems' parts enable designers to create the lowest noise signal chains possible, and LTspice® is a key way of making this happen. Being in the embedded library showcases our parts within LTspice®, and that's useful for engineers seeking to make the best possible products."

"Our parts have significant advantages over others in the industry in terms of low noise and other important specifications," McCune said.  "LTspice® users now have much better small-signal discrete capabilities at their fingertips."

Linear Systems specializes in the development and manufacture of precision, ultra-low-noise small-signal discrete components. Its parts, such as the LSK389 and LSK489, are used in highly demanding sensor systems ranging from the Large-Scale Synoptic Telescope to piezoelectric devices to sonobuoys. These parts also provide the front-end amplification for high-end test and measurement, medical and audio equipment.

SPICE models for Linear Systems' parts have been available previously, but users of LTspice® and other simulation software needed to manually add the models.  Including the models in the LTspice® embedded library enables designers to include them in new designs with a mouse click. 

Linear Systems is a full-service, privately-held, 32-year-old designer and manufacturer of small-signal discrete semiconductors. The Fremont, CA-based company was founded by John H. Hall, co-founder of Intersil and founder of Micro Power Systems.

Linear Systems' product line consists of: Ultra-Low-Noise N-Channel and P-Channel Dual and Single JFETs, High-Speed Lateral DMOS Switches, Bipolar Transistors, BIFET Amplifiers, Current-Regulating Diodes, Low-Leakage Diodes, MOSFETs, PhotoFETS, and Voltage Controlled Resistors. Data sheets, applications notes, SPICE models and other information can be downloaded at

For more information about Linear Systems please contact Ms. Laura Madonna at For customer service, please contact Linear Systems at or call (510) 490-9160.

LTspice® is owned by Analog Devices, Inc. For more information, please visit:

SOURCE Linear Integrated Systems

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