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

LOG CONFORMANCE, MONOLITHIC DUAL, NPN TRANSISTOR < Back LS318 LOG CONFORMANCE, MONOLITHIC DUAL, NPN TRANSISTOR Previous Next

MONOLITHIC DUAL, P-CHANNEL ENHANCEMENT MODE MOSFET < Back 3N165 Series MONOLITHIC DUAL, P-CHANNEL ENHANCEMENT MODE MOSFET The 3N165 Series Monolithic Dual, P-Channel Enhancement Mode MOSFET is a direct replacement for Intersil and Siliconix-Vishay part. It is ideal for Amplifier and switching Applications. This part series is available in the Available in the TO-99 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: 3N165 TO-99 8L RoHS 3N166 TO-99 8L RoHS 3N165 SOIC 8L RoHS 3N1646 SOIC 8L RoHS 3N163 Die 3N164 Die Datasheet Spice Model Application Notes

SINGLE, HIGH INPUT IMPEDANCE, N-CHANNEL JFET AMPLIFIER < Back LS/PF/SST5301 SINGLE, HIGH INPUT IMPEDANCE, N-CHANNEL JFET AMPLIFIER The LS/PF/SST5301 Single, High Input Impedance, N-Channel JFET Amplifier is a direct replacement for the Fairchild equivalent part. It is ideal for very high input impedance applications. Available in the TO-72 4L, TO-92 3L and SOT-23 3L RoHS package, as well as 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: LS5301 TO-72 4L RoHS PN5301 TO-92 3L RoHS SST5301 SOT-23 3L RoHS LS5301 Die Datasheet Spice Model Application Notes

SINGLE, LOW-LEAKAGE, LOW-NOISE, N-CHANNEL JFET AMPLIFIER < Back LS846 SINGLE, LOW-LEAKAGE, LOW-NOISE, N-CHANNEL JFET AMPLIFIER The LS846 Single, Low-Leakage, Low-Noise, N-Channel JFET Amplifier is a single version of LS844 Series. It is ideal for Low Noise and Low Leakage Applications. Available in the TO-72 4L, TO-92 3L and SOT-23 3L RoHS package, as well as 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: LS846 TO-72 4L RoHS LS846 TO-92 3L RoHS LS846 SOT-23 3L RoHS LS846 Die Datasheet Spice Model Application Notes

GENERAL PURPOSE < Back LS190 GENERAL PURPOSE The LS190 is a General Purpose Single N-Channel JFET Amplifier. This part is available in the TO-92 3L package, as well as the SOT-89 3L package. 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. Datasheet Spice Model Application Notes

LS3250 Single NPN High-Speed Switching Transistor < Back LS3250S - Single The LS3250 Single is a high-performance NPN high-speed switching transistor designed for demanding applications in both analog and digital circuits. Engineered for high-speed switching with low saturation voltage, it enhances efficiency while minimizing power loss, making it ideal for general-purpose switching and signal processing across a wide range of industrial and consumer electronics applications. Available Packages: Die Form (waffle pack ) SOT-23 (3L) (surface-mount ) TO-92 (3L) (through-hole ) Key Features & Benefits: Low Saturation Voltage: Enhances efficiency and reduces power loss Compact Packaging: Versatile options for surface-mount and through-hole applications High-Speed Switching: Optimized for fast, reliable performance in critical circuits Applications: High-speed switching circuits Analog circuit amplification Signal processing Consumer electronics Advanced Screening Options: 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 available when ordering this part series: Standard Part Call-Out: LS3250S DIE LS3250S SOT-23 3L RoHS LS3250S TO-92 3L RoHS Select Part Call-Out:Select parts include SEL + 4-digit numeric code LS3250S DIE SELXXXX LS3250S SOT-23 3L RoHS SELXXXX LS3250S TO-92 3L RoHS SELXXXX High-performance NPN high-speed switching transistor designed for demanding applications in both analog and digital circuits. Datasheet Spice Model Application Notes

SINGLE, LOW CAPACITANCE, ULTRA-HIGH INPUT IMPEDANCE N-CHANNEL JFET AMPLIFIER - DFN < Back 4117DFN SERIES SINGLE, LOW CAPACITANCE, ULTRA-HIGH INPUT IMPEDANCE N-CHANNEL JFET AMPLIFIER - DFN The 2N/PN/SST4117 Series Single, Low Capacitance, Ultra-High Input Impedance, N-Channel JFET Amplifier is a direct replacement for the Fairchild, NXP and Siliconix-Vishay equivalent part series. It is ideal for high input impedance applications. This series is available in the DFN 8L RoHS miniature/non/magnetic package, as well as the TO-72 4L RoHS, TO-92 3L RoHS, SOT-23 3L RoHS package and 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: 2N4117 TO-72 4L RoHS 2N4118 TO-72 4L RoHS 2N4119 TO-72 4L RoHS PN4117 TO-92 3L RoHS PN4118 TO-92 3L RoHS PN4119 TO-92 3L RoHS SST4117 SOT-23 3L RoHS SST4118 SOT-23 3L RoHS SST4119 SOT-23 3L RoHS 2N4117 Die 2N4118 Die 2N4119 Die Datasheet Spice Model Application Notes

< Back Military Sensor Signal Chains Introduction Higher-performance sensors are becoming increasingly important to modern battlefield systems. Sensors ranging from sonobuoys to radiation detectors are critical, leading-edge components of C4ISR systems. Better sensor systems enable earlier threat detection and more effective countermeasures. Military systems employ a wide range of sensors – nuclear, biological, and chemical sensing, infrared, electro-optical, laser, radar, and acoustical – that all have one aspect in common: the requirement for ultra-low-noise signal chains to produce the best possible sensor signal. Less-than-optimal front-end amplification means C4ISR clients receive inadequate information and are not able to make effective, real-time decisions. This paper describes techniques to employ to create the lowest-noise, most effect front-end amplification for sensor signal chains. Advanced lithography design and fab process techniques enable the creation of discrete components uniquely capable of performing the critical initial amplification of sensor signals. Integrated circuits contain a wide range of components and can include specialized design features that preclude design optimization for low noise. As this paper documents, ultra-low-noise discrete components added to an IC-based circuit will produce the lowest-noise signal chain. Though this paper focuses on the LSK489 dual monolithic Nchannel JFET, many other Linear Systems parts -- including the LSK389, LSK170 and LSK189 -- also are excellent sensor system components. Linear Systems is the world leader in ultra-low-noise monolithic dual JFETs and other front-end discrete components key to high-performance sensing systems. For over three decades, Linear Systems has led the development of this class of devices, and it continues to advance their design and introduce new sensor-specific parts. Read More

LOW LEAKAGE, MONOLITHIC DUAL, PICO-AMP DIODE < Back DPAD/SSTDPAD Series JPAD SERIES SINGLE, PICO AMP, LOW LEAKAGE DIODES The DPAD Series Low Leakage, Monolithic Dual, Pico-Amp Diode is a direct replacement for the Siliconix-Vishay part series. It is ideal for Pico Amp, Ultra Low Leakage, Protection Diode Applications. This part series is available in the TO-72 4L RoHS, TO-78 5L RoHS and SOIC 8L RoHS package, as well as 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: DPAD1 TO-72 4L RoHS DPAD2 TO-72 4L RoHS DPAD5 TO-72 4L RoHS DPAD10 TO-72 4L RoHS DPAD20 TO-72 4L RoHS DPAD50 TO-72 4L RoHS DPAD100 TO-72 4L RoHS DPAD1 TO-78 5L RoHS DPAD2 TO-78 5L RoHS DPAD5 TO-78 5L RoHS DPAD10 TO-78 5L RoHS DPAD20 TO-78 5L RoHS DPAD50 TO-78 5L RoHS DPAD100 TO-78 5L RoHS DPAD1 SOIC 8L RoHS DPAD2 SOIC 8L RoHS DPAD5 SOIC 8L RoHS DPAD10 SOIC 8L RoHS DPAD20 SOIC 8L RoHS DPAD50 SOIC 8L RoHS DPAD100 SOIC 8L RoHS DPAD1 Die DPAD2 Die DPAD5 Die DPAD10 Die DPAD20 Die DPAD50 Die DPAD100 Die Datasheet Spice Model Application Notes

< Back LSJ689 App Note Introduction The dual monolithic P-channel LSJ689 is the complement to the N-channel LSK489. Both devices feature low offset, low noise and low capacitance. They enable the efficient implementation of fully complementary input stages without many of the device matching requirements when pairs of discrete devices are employed. Used alone, the LSJ689 also enables the implementation of more traditional differential input stages in applications where P-channel devices are preferred. Features of the LJ689 include: Low noise on the order of 2 nV/Hz Low gate-drain capacitance, typically 3pF Low gate leakage current typically 3pA (Vds = 15V, Id = 1mA) Breakdown voltage of 50V o IDSS range of 5-20 mA Typical transconductance of 3mS at Id = 1mA This note covers the full-complementary input stage application for the LSJ689 in combination with the LSK489. Read More

< Back Jaime Cook: VP of Operations & Market Development Linear Systems Nov 21, 2024 Jaime Cook Appointed VP of Operations & Market Development at Linear Systems, Inc. Fremont, CA – October 1, 2024 – Linear Integrated Systems, Inc. is pleased to announce the appointment of Jaime L. Cook as Vice President of Operations and Market Development. In this pivotal role, Jaime will oversee all operational functions and spearhead market development initiatives. Jaime Cook has been a valued member of the Linear Systems team since 2009. Before stepping into her new role, Jaime served as Sales Manager, Director of Sales, and VP of Operations, gaining extensive experience across multiple facets of the company. Jaime brings a wealth of knowledge and expertise to her position as VP of Operations & Market Development. She holds bachelor's degrees in Real Estate and Land Use, as well as Strategic Management. Her education, certifications, and work experience have honed her skills in strategic planning, negotiation, and relationship building—qualities that significantly contribute to her expanded responsibilities at Linear Systems. “I’m incredibly proud to have built my career at Linear Systems and to be part of a team of exceptional individuals committed to producing the industry’s best specialty linear semiconductors while consistently meeting the highest standards of performance and reliability,” said Cook. “I am excited to expand my responsibilities, drive operational excellence, and lead efforts to explore new market opportunities.” Cindy L. Johnson, CEO of Linear Systems, stated, “Jaime’s leadership in operations and market development is pivotal as we aim to expand our product reach and strengthen customer relationships. Her strategic vision is vital to our mission of delivering ultra-reliable JFETs and other components that enable our clients to achieve outstanding performance in their designs.” Founded 37 years ago by John M. Hall, Cindy L. Johnson, and John H. Hall, Linear Integrated Systems, Inc. is a privately held designer and manufacturer of small-signal discrete semiconductors based in Fremont, CA. John H. Hall, a co-founder of Intersil and the founder of Micro Power Systems, brought significant expertise and innovation to the company. Linear Systems offers a diverse product line, including Dual JFET Amplifiers , Single JFET Amplifiers , JFET Switches , DMOS High Speed Switches , Low Leakage Diodes , Current Regulating Diodes , Bipolar Transistors , MOSFETs , Voltage Controlled Resistors and BIFET Amplifiers . Visit www.linearsystems.com to download our 2024 Data Book , Cross Reference Guide , datasheets, SPICE models, application notes , and more. Stay connected and join our growing LinkedIn community for updates and insights. You can also follow us on YouTube , Facebook , Instagram and X .