SD/SST210 SINGLE, HIGH SPEED N-CHANNEL LATERAL DMOS FET SWITCH < Back SD/SST210 Series SD210 SINGLE, HIGH SPEED N-CHANNEL LATERAL DMOS FET SWITCH The SD/SST210 Series is a Single, High Speed N-Channel Lateral DMOS FET Switch, ideal for Ultra-High Speed Switching Applications. Linear Systems acquired the Siliconix Lateral DMOS FET Switch product line, so our version is the same maskset, same process and is an exact pin-for-pin replacement . It is available in the TO-72 4L RoHS and SOT-143 4L RoHS package, as well as bare die. Advanced screening options are available for our diverse product lineup, featuring JFETS, Bipolar transistors, MOSFETs, current regulators, and Diodes. Our special screening covers all the parameters listed in the standard datasheet, including comprehensive package pin-out. Connect with our experienced technical team to discuss your specific needs and tailor your requirements—email us at support@linearsystems.com or call (510) 490-9160. MOQ applies to these specialized services. Ordering Information Below are the options you have when ordering this part series: SD210DE TO-72 4L RoHS SD214DE TO-72 4L RoHS SST210 SOT-143 4L RoHS SST214 SOT-143 4L RoHS Datasheet Spice Model Applicaton Notes

< Back Current Regulating Diodes Introduction Abstract: Many analog circuit designs have the need for current regulation. Examples include circuits that process signals from sensors, circuits that amplify, and voltage reference or regulators. Current regulation can be referred to as a current source or a Norton device/equivalent circuit (cf. Thevenin equivalent circuit). Read More

SINGLE, ULTRA-LOW NOISE, P-CHANNEL JFET AMPLIFIER < Back LSJ/SST74 Series SINGLE, ULTRA-LOW NOISE, P-CHANNEL JFET AMPLIFIER The LSJ/SST74 Single, Ultra-Low noise, P-Channel JFET Amplifier is a direct replacement for the Toshiba 2SJ74. It is ideal for Ultra-Low Noise Audio/Acoustic Applications. Available in the TO-92 3L RoHS, SOT-89 3L RoHS, as well as in die form. Advanced screening options are available for our diverse product lineup, featuring JFETS, Bipolar transistors, MOSFETs, current regulators, and Diodes. Our special screening covers all the parameters listed in the standard datasheet, including comprehensive package pin-out. Connect with our experienced technical team to discuss your specific needs and tailor your requirements—email us at support@linearsystems.com or call (510) 490-9160. MOQ applies to these specialized services. Ordering Information: Below are the options you have when ordering this part series: LSJ74A TO-92 3L RoHS LSJ74B TO-92 3L RoHS LSJ74C TO-92 3L RoHS LSJ74D TO-92 3L RoHS SST74A SOT-23 3L RoHS SST74B SOT-23 3L RoHS SST74C SOT-23 3L RoHS SST74D SOT-23 3L RoHS Datasheet Spice Model Application Notes

< Back Burning Amp Festival Linear Systems Mar 17, 2023 Burning Amp Festival - A DIY Audio Gathering Burning Amp Festival Every year Linear Systems sponsors one of the audio industry’s best-regarded DIY amplifier design, display and discussion events, Burning Amp Festival. Here audio enthusiasts enjoy sharing their displays and demonstrations of incredible audio projects, and talk-shop with renowned industry leaders. Speakers such as audio legend Nelson Pass, take the stage to discuss recent projects and engage with the crowd in a Q&A session. It’s no wonder Burning Amp continually attracts audio DIYers from around the world! Burning Amp typically takes place in late October/early November. In past years the event has been held at various locations throughout the Bay Area, such as Fort Mason in San Francisco, CA. Due to COVID-19, this year’s event is cancelled, but we look forward with great anticipation to the Burning Amp Festival 2021.Interested in presentations from past years speakers? Visit our YouTube Channel: www.youtube.com/user/LinearSystemsUSA

MONOLITHIC-DUEL, P-CHANNEL ENHANCEMENT MODE MOSFET < Back 3N190 Series MONOLITHIC-DUEL, P-CHANNEL ENHANCEMENT MODE MOSFET The 3N190 Series Monolithic-Duel, P-Channel Enhancement Mode MOSFET is a direct replacement for Intersil and Siliconix-Vishay equivalent part. It is ideal for Amplifier and Switching Applications. This part series is available in TO-78 7L RoHS package, as well as in die form. Advanced screening options are available for our diverse product lineup, featuring JFETS, Bipolar transistors, MOSFETs, current regulators, and Diodes. Our special screening covers all the parameters listed in the standard datasheet, including comprehensive package pin-out. Connect with our experienced technical team to discuss your specific needs and tailor your requirements—email us at support@linearsystems.com or call (510) 490-9160. MOQ applies to these specialized services. Ordering Information Below are the options you have when ordering this part series: 3N190 TO-78 7L RoHS 3N191 TO-78 7L RoHS Datasheet Spice Model Application Notes

< Back BIFET Amplifiers Linear Systems Sep 26, 2024 BIFET amplifiers are a type of operational amplifier (op-amp) that use bipolar junction field-effect transistors (BJFETs) as their input stage. Introduction BIFET amplifiers are a type of operational amplifier (op-amp) that use bipolar junction field-effect transistors (BJFETs) as their input stage. These types of amplifiers have been popular for many years because they offer low bias currents, high input impedance and excellent linearity. In this article, we will discuss the key features of BIFET amplifiers, how they differ from other op-amps, and some common applications where they are used. What is a BIFET Amplifier? As mentioned earlier, BIFET amplifiers use BJFETs as their input stage instead of traditional MOSFETs or BJTs. BJFETs are known for their high input impedance and low noise, making them suitable for use in audio amplifiers and other sensitive applications. One of the main advantages of BIFET amplifiers is their low bias currents, which can be as low as a few femtoamps (10^-15 amps). This allows for higher precision in measuring small signals without introducing additional error. How do BIFET Amplifiers Differ from Other Op-Amps? BIFET amplifiers have several key differences compared to traditional op-amps. These include: Input Stage: As mentioned earlier, BIFET amplifiers use BJFETs instead of MOSFETs or BJTs as their input stage. This allows for higher input impedance and lower bias currents. Biasing: BIFET amplifiers typically use a single positive power supply, unlike other op-amps which may require dual supplies. This makes them more convenient to use in certain applications. Output Stage: The output stage of a BIFET amplifier is usually a MOSFET or BJT, providing high output current and low output impedance. This allows for driving larger loads without significant signal loss. Applications of BIFET Amplifiers BIFET amplifiers are commonly used in audio applications due to their low noise and high linearity. They are also popular in medical and scientific instrumentation where precision measurements are required. Other applications of BIFET amplifiers include: Sensor Signal Conditioning: The high input impedance and low bias currents make BIFET amplifiers ideal for conditioning signals from sensors such as thermocouples, strain gauges, and photodiodes. Active Filters: BIFET amplifiers can be used to create active filters with better performance compared to traditional op-amps. They also have lower power consumption, making them suitable for battery-powered applications. Data Acquisition Systems: BIFET amplifiers are commonly used in data acquisition systems due to their low noise and high precision. They can amplify small signals from sensors before being digitized for processing. Conclusion BIFET amplifiers offer several advantages over traditional op-amps, making them suitable for a variety of applications. They provide high input impedance, low bias currents, and high output current capabilities. These features make BIFET amplifiers ideal for use in audio, sensor signal conditioning, active filters, and data acquisition systems. As technology continues to advance, we may see further improvements in BIFET amplifier design and their application in various industries. So, it is important to stay updated with the latest developments in this field to fully utilize the potential of BIFET amplifiers.

< Back LTspice Press Release Linear Systems Mar 17, 2023 Linear Systems' JFETs in LTspice NEWS RELEASE FOR INFORMATION CONTACT: Linear Systems, Inc. Sales Department Phone: (510) 490-9160 Email: sales@linearsystems.com LTspice® Designers Now Have Access to Industry's Lowest Noise Part s FREMONT, Calif., March 3, 2020 – 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 Linear Systems' parts enable designers to create the lowest noise signal chains possible. Being included in the embedded library showcases these parts within LTspice®, making it easier for engineers to design the best possible products. 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 use them in new designs with a simple mouse click. About Linear Systems Founded in 1987, Linear Systems is a full-service, privately-held 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 includes 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. Datasheets, application notes, SPICE models, and additional information can be downloaded at www.linearsystems.com. For customer service, contact Linear Systems at sales@linearsystems.com or call (510) 490-9160. LTspice® is owned by Analog Devices, Inc. For more information, please visit: [LTspice® at Analog Devices](https://www.analog.com/en/design-center/design-tools-and-calculators/ltspice-simulator.html)

Purchase Directly from Linear Systems Linear Systems offers direct sales to customers as well as through our network of authorized distributors, each with its own unique benefits. Contact us at (510) 490-9160 or sales@linearsystems.com for assistance with price quotes, samples, custom part discussions, drawing evaluations, and valuable insights. Contact Us! Purchase Directly from Authorized Distributors Customers have the option to order through Linear Systems' authorized distributors, ensuring access to our high-quality parts worldwide. Some distributors provide additional services such as design support, product screening, and testing. Purchasing directly from Linear Systems, or through our authorized distributors guarantees you receive genuine components and exceptional support tailored to your needs. Global Distributors Below are our International Distributors, shipping to locations worldwide. Linear Systems' Authorized Distributor, Micross Linear Systems' Authorized Distributor, NAC Semi Linear Systems' Authorized Distributor, Trendsetter Electronics Linear Systems' Authorized Distributor, Mouser Electronics Linear Systems Authorized Distributor, DigiKey Electronics Regional Distributors Should you wish to order from a distributor nearer to your location, kindly consult the following list, as we have distributors located around the world. Italy Schurter Electronics S.p.A. Email info.it@schurter.com Phone # +39 02 3046 5311 Website Germany, Switzerland & Austria SEMITRON W. Röck GmbH Distribution + Testhaus Email sales@semitron.de Phone # +49 7742 800-10 Website United States Trendsetter Electronics Email sales@trendsetter.com Phone # (512) 310-8858 Website United States NAC Semi Email sales@nacsemi.com Phone # (727) 828-0187 Website France CATS (Solutec & Microel) Email contact@cats-france.fr Phone # +33-1-69070824 or +33-1-69592150 Website India Electronic Enterprises (India) Private Limited Email eehyd@eeipl.in Phone # 040-23243352, 23240817 Website Germany AMU Electronics GmbH Email patrick.mueller@amu-electronics.com Phone # 05602/91947-59 Website Japan Kyokuto Boeki Kaisha Ltd. (KBK) Email eldv@kbk.co.jp Phone # +81-03-3244-3783 Website United Kingdom Micross Components - United Kingdom Email Darren.George@micross.com Phone # +44 (0)1603 788967 Website Finland Elgood Oy Email info@elgood.fi Phone # +358 207 981 140 Website Israel Gitronics/Boran Email support@boran.co.il Phone # +972-3-9274738 Website Austria IKE-Electronic E.U. Email office@ike-electronic.at Phone # +43 7448 21643 11 Website United States Micross Components Email sales@micross.com Phone # (855) 426-6766 Website United States NAC Semi Email sales@nacsemi.com Phone # (727) 828-0187 Website United Kingdom; Europe (excluding Germany, Austria, Switzerland) Anglia Email Info@anglia.com Phone # +44 (0) 1945 474747 Website Purchase Order Terms & Conditions Privacy Policy

HIGH VOLTAGE, SUPER BETA, MONOLITHIC DUAL, NPN TRANSISTOR < Back LS301 Series HIGH VOLTAGE, SUPER BETA, MONOLITHIC DUAL, NPN TRANSISTOR The LS301 Series High Voltage, Super Beta, Monolithic Dual, NPN Transistor is a direct replacement for the Micro Power Systems MP301, MP302, MP303 Series. It is ideal for Small Signal Transistors, Super Beta, Amplifier & Switching Applications. It is available the in TO-71 6L RoHS, TO-78 6L RoHS, PDIP 8L ROHS and SOIC 8L RoHS package, as well as bare die. Advanced screening options are available for our diverse product lineup, featuring JFETS, Bipolar transistors, MOSFETs, current regulators, and Diodes. Our special screening covers all the parameters listed in the standard datasheet, including comprehensive package pin-out. Connect with our experienced technical team to discuss your specific needs and tailor your requirements—email us at support@linearsystems.com or call (510) 490-9160. MOQ applies to these specialized services. Ordering Information Below are the options you have when ordering this part series: LS301 TO-71 6L RoHS LS302 TO-71 6L RoHS LS303 TO-71 6L RoHS LS301 TO-78 6L RoHS LS302 TO-78 6L RoHS LS303 TO-78 6L RoHS LS301 PDIP 8L RoHS LS302 PDIP 8L RoHS LS303 PDIP 8L RoHS LS301 SOIC 8L RoHS LS302 SOIC 8L RoHS LS303 SOIC 8L RoHS LS301 Die LS302 Die LS303 Die Datasheet Spice Model Application Notes

ULTRA LOW NOISE, HIGH IDSS SINGLE N-CHANNEL JFET AMPLIFIER < Back LSK170X ULTRA LOW NOISE, HIGH IDSS SINGLE N-CHANNEL JFET AMPLIFIER The LSK170X Ultra Low-Noise, High Idss, Single N-Channel JFET Amplifier is ideal for Ultra-Low Noise Audio/Acoustic Applications. Available in the TO-92 3L RoHS, SOT-23 3L RoHS and SOT-89 3L RoHS package, as well as in die form. Advanced screening options are available for our diverse product lineup, featuring JFETS, Bipolar transistors, MOSFETs, current regulators, and Diodes. Our special screening covers all the parameters listed in the standard datasheet, including comprehensive package pin-out. Connect with our experienced technical team to discuss your specific needs and tailor your requirements—email us at support@linearsystems.com or call (510) 490-9160. MOQ applies to these specialized services. Ordering Information Below are the options you have when ordering this part series: LSK170X TO-92 3L RoHS LSK170X SOT-23 3L RoHS LSK170X SOT-89 3L RoHS LSK170X Die Datasheet Spice Model Application Notes

Linear Systems designs and manufactures the highest-performance line of monolithic dual JFETs in the industry. Contact us for a quote! Back 2N/LS5905 Series LOW-LEAKAGE, LOW-DRIFT, MONOLITHIC DUAL, N-CHANNEL JFET AMPLIFIER The 2N/LS5905 Series Low Leakage, Low Drift, Monolithic Dual N-Channel JFET Amplifier features tight matching and low drift over temperature specifications. The series is targeted for use in a wide range of precision instrumentation applications where tight tracking is required. Linear Systems’ version of this part series is a direct, pin-for-pin replacement of the Intersil part. Available in the TO-78 7L RoHS and SOIC 8L RoHS package, as well as bare die. Advanced screening options are available for our diverse product lineup, featuring JFETS, Bipolar transistors, MOSFETs, current regulators, and Diodes. Our special screening covers all the parameters listed in the standard datasheet, including comprehensive package pin-out. Connect with our experienced technical team to discuss your specific needs and tailor your requirements—email us at support@linearsystems.com or call (510) 490-9160. MOQ applies to these specialized services. Ordering Information Below are the options you have when ordering this part series: LS5905 TO-78 7L RoHS LS5906 TO-78 7L RoHS LS5907 TO-78 7L RoHS LS5908 TO-78 7L RoHS LS5909 TO-78 7L RoHS 2N5905 TO-78 7L RoHS 2N5906 TO-78 7L RoHS 2N5907 TO-78 7L RoHS 2N5908 TO-78 7L RoHS 2N5909 TO-78 7L RoHS LS5905 SOIC 8L RoHS LS5906 SOIC 8L RoHS LS5907 SOIC 8L RoHS LS5908 SOIC 8L RoHS LS5909 SOIC 8L RoHS Datasheet Spice Model Application Notes

TIGHT MATCHING, MONOLITHIC DUAL, PNP TRANSISTOR < Back LS350 Series TIGHT MATCHING, MONOLITHIC DUAL, PNP TRANSISTOR The LS350 Series, Tight Matching, Monolithic Dual, PNP Transistor is a direct replacement for the Analog Devices MAT series and Micro Power Systems MP350, MP351, and MP352 Series. It is ideal for Tight Matching, Small Signal, Transistors Amplifier & Switching Applications. It is available the in TO-71 6L, TO-78 6L, PDIP 8L, SOIC 8L, SOT-23 6L and DFN 8L package, as well as bare die. Advanced screening options are available for our diverse product lineup, featuring JFETS, Bipolar transistors, MOSFETs, current regulators, and Diodes. Our special screening covers all the parameters listed in the standard datasheet, including comprehensive package pin-out. Connect with our experienced technical team to discuss your specific needs and tailor your requirements—email us at support@linearsystems.com or call (510) 490-9160. MOQ applies to these specialized services. Ordering Information Below are the options you have when ordering this part series: LS350 TO-71 6L RoHS LS351 TO-71 6L RoHS LS352 TO-71 6L RoHS LS350 TO-78 6L RoHS LS351 TO-78 6L RoHS LS352 TO-78 6L RoHS LS350 PDIP 8L RoHS LS351 PDIP 8L RoHS LS352 PDIP 8L RoHS LS350 SOIC 8L RoHS LS351 SOIC 8L RoHS LS352 SOIC 8L RoHS LS350 SOT-23 6L RoHS LS351 SOT-23 6L RoHS LS352 SOT-23 6L RoHS 351 DFN 8L RoHS 352 DFN 8L RoHS 353 DFN 8L RoHS LS350 Die LS351 Die LS352 Die Datasheet Spice Model Application Notes