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< Back Testing Capability Linear Systems Mar 17, 2023 New Low-Noise Semiconductor Testing Capability FREMONT, Calif., April 11, 2019 /PRNewswire/ -- Linear Integrated Systems, Inc. (Linear Systems) will be unveiling its large-scale sub-nanovolt parts testing capability at the 23rd Annual Conference and Exhibition for Components for Military & Space Electronics (CMSE) in Los Angeles. This testing capability enables individual screening of small-signal discrete components to levels below a billionth of a volt (nV/√Hz) of noise in quantities up to tens of thousands of parts. Linear Systems created this capability in response to a U.S. defense program requirement and is now providing ultra-low-noise-screened parts to other customers. "Small-signal discrete components can help create the lowest noise signal chains possible and that's what our customers have been demanding," said Timothy S. McCune. "This sub-nanovolt testing capability enables us to provide production-line quantities of parts guaranteed to meet specific noise levels. No other company has this capability." Linear Systems will be available to discuss this capability and its line of precision small-signal discrete components at the 23rd Annual Conference and Exhibition for Components for Military & Space Electronics (CMSE) to be held at the Four Points by Sheraton (LAX), Los Angeles on April 16-18. CMSE is the premier event focused on the design, reliability, and application of electronic components for use in avionics aerospace, military & commercial space systems. The conference provides access to more than 30 technical presentations by industry leaders, focused on advanced packaging of ICs, passive components, and a number of other topics critical to components used in high reliability military and aerospace systems. 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. Linear Systems is a full-service, privately-held, designer and manufacturer of small-signal discrete semiconductors established in 1987. 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 linearsystems.com . For more information about Linear Systems please contact Ms. Laura Madonna at laura@linearsystems.com . For customer service, please contact Linear Systems at sales@linearsystems.com or call (510) 490-9160. SOURCE Linear Integrated Systems Related Links www.linearsystems.com

J111 SERIES LOW LEAKAGE, N-CHANNEL JFET SWITCH < Back J/SST111 Series J111 SERIES LOW LEAKAGE, N-CHANNEL JFET SWITCH The J/SST111 Series Low Leakage, N-Channel JFET Switch is a direct replacement for the Siliconix-Vishay equivalent part. It is ideal for fast switching, low leakage, switching applications. Available in the TO-92 3L RoHS and SOT-23 3L RoHS package, as well as in die from. 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: J111 TO-92 3L RoHS J112 TO-92 3L RoHS J113 TO-92 3L RoHS SST111 SOT-23 3L RoHS SST112 SOT-23 3L RoHS SST113 SOT-23 3L RoHS J111 Die J112 Die J113 Die Datasheet Spice Model Application Notes

< Back LSK489 App Note Introduction For circuits designed to work with high impedance sources, ranging from electrometers to microphone preamplifiers, the use of a low-noise, high-impedance device between the input and the op amp is needed in order to optimize performance. At first glance, one of Linear Systems’ most popular parts, the LSK389 ultra-low-noise dual JFET would appear to be a good choice for such an application. The part’s high input impedance (1 TΩ) and low noise (1 nV/√Hz at 1kHz and 2mA drain current) enables power transfer while adding almost no noise to the signal. But further examination of the LSK389’s specification shows an input capacitance of over 20pF. This will cause intermodulation distortion as the circuit’s input signal increases in frequency if the source impedance is high. This is because the JFET junction capacitances are nonlinear. This will be especially the case where common source amplifier arrangements allow the Miller effect to multiply the effective value of the gate-drain capacitance. Further, the LSK389’s input impedance will fall to a lower value as the frequency increases relative to a part with lower input capacitance. A better design choice is Linear Systems’ new offering, the LSK489. Though the LSK489 has slightly higher noise (1.5 nV/√Hz vs. 1.0 nV/√Hz) its much lower input capacitance of only 4pF means that it will maintain its high input impedance as the frequency of the input signal rises. More importantly, using the lower-capacitance LSK489 will create a circuit that is much less susceptible to intermodulation distortion than one using the LSK389. The LSK489’s lower gate-to-drain capacitance enables more effective, elegant audio circuit designs. The relatively high capacitance of the LSK389 often requires designers to use a cascode circuit to provide the ability to handle higher bandwidths without intermodulation distortion. The cascode does this by eliminating the Miller effect that can multiply the effective gate-drain capacitance and its associated nonlinear effects. However, the cascode adds complexity and noise contributed by the cascode transistors. The LSK489 is an N-channel dual low-noise, low-capacitance, tightly matched monolithic field effect transistor. It features: • 3ms transconductance at 2mA drain current • 1000 GΩ input impedance • 60V breakdown voltage • gate-drain capacitance of only 1.5pF • 4pF input capacitance • 1.5 nV/√Hz noise at 1kHz • best low-noise/low-capacitance combination in the industry • lowest input capacitance per unit gate length in the industry • lowest noise for a given gate length in the industry • tight Vgs matching at operating bias Read More

< Back Ansberry Named VP Linear Systems Mar 17, 2023 Michael Ansberry - VP for Process Engineering. Ansberry Named VP NEWS RELEASE FOR INFORMATION CONTACT: Laura Madonna, Marketing Analyst Linear Integrated Systems, Inc. Phone: (510) 490-9160 Email: laura@linearsystems.com ANSBERRY NAMED VP FOR PROCESS ENGINEERING AT LINEAR INTEGRATED SYSTEMS FREMONT, CA – 06/27/2018. Linear Integrated Systems, Inc., is proud to announce and welcome Michael Ansberry as the company’s Vice President for Process Engineering. Ansberry will be responsible for all aspects of the company’s semiconductor fabrication operations. Ansberry joins Linear Integrated Systems (Linear Systems) from Lumileds, where he was Director of Operations. Lumileds is a lighting company that designs and manufactures LEDs for automotive, general and specialty lighting applications. Prior to Lumileds, he worked in process engineering at Sipex, Micro Power Systems and other Silicon Valley semiconductor companies. While Ansberry’s most recent experience is in managing large-scale LED production, he has extensive process engineering experience with the types of world-class semiconductors produced by Linear Systems. “Linear Systems makes the best parts in their class, and I’m very glad to be joining the team here,” Ansberry said. “Ultra-low-noise discrete components are critical for a wide range of applications and joining Linear Systems during this period of growth is exciting.” Linear Systems CEO Cindy L. Johnson said Ansberry's hiring is a key part of the company’s program to expand to meet a growing demand for its products. “Efforts to produce more precise and capable sensors are leading designers to incorporate our ultra-low-noise JFETs and other parts into their devices,” Linear Integrated Systems, Inc., is a full-service, privately-held, 30-year-old designer and manufacturer of small-signal discrete semiconductors. The Fremont, CA 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 can be downloaded at linearsystems.com .

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

Linear Systems has been designing, manufacturing, and distributing high-performance JFET Amplifiers, DMOS Switches, Current Regulating Diodes, Bipolar Transistors, and JFET Switches since 1987. Our specialty semiconductors are recognized as the best in their class for precision, reliability, and performance. Ultra-Low Noise JFETs, Precision Analog Semiconductors, and High-Speed DMOS Switches for Audio, Aerospace, Medical, and Sensor Applications Since 1987, Linear Systems has been a leader in manufacturing specialty semiconductors. Operating from three Silicon Valley fabrication facilities, we serve a wide range of industries, including defense, aerospace, professional audio, and more. Our components are integral to applications such as underwater surveillance, space telescope cameras, high-fidelity audio equipment, and advanced aerospace sensors. Our dedicated team is committed to delivering high-quality, reliable components, ensuring timely delivery to meet our customers' needs. Request a Quote Get Started How We Help You At Linear Systems, we understand that every application has unique demands. That’s why we offer advanced screening and customization options across our full product range, including N-Channel and P-Channel JFETs, High-Speed N-Channel Lateral DMOS Switches, Single and Quad Current-Regulating Diodes, Ultra Low-Leakage Diodes, NPN and PNP Bipolar Transistors, N-Channel and P-Channel Small Signal MOSFETs, and BIFET devices. Our advanced screening process allows for precise parameter selection, covering all specifications listed in our standard data sheets, including detailed package pin-outs. Whether you need tighter tolerances, specific performance metrics, or custom sorting, we can tailor our parts to meet your exact requirements. Let’s build exactly what you need. View Products Explore our: Low-Noise JFETS Explore our: Current Regulating Diodes Explore our: High-Speed DMOS Switches

Discover our diverse product line of innovative solutions at 4042 Clipper Court, Fremont, CA, USA. From Ultra-Low-Noise JFETs to Current Regulating Diodes, DMOS High-Speed Switches, MOSFETs, Bipolar Transistors, Low Leakage Diodes, and Voltage Controlled Resistors, we offer cutting-edge technology to meet your needs. Find the perfect solution for your requirements today! Our Products Request Samples Contact an Engineer Linear Systems specializes in manufacturing high-performance small-signal discrete semiconductors, including ultra-low-noise monolithic dual and single JFETs, high-speed lateral DMOS switches, low-leakage diodes, current-regulating diodes, monolithic dual transistors, MOSFETs, BiFET amplifiers, and voltage-controlled resistors. Our products are recognized for their precision, reliability, and performance, serving applications in military sensors, industrial controls, high-end audio equipment, medical electronics, and test and measurement instruments. Notably, our LSK series, featuring the LSK389 and LSK170 ultra-low-noise N-channel JFETs, is designed for the most demanding applications. Our high-speed lateral DMOS switches, including single and quad nanosecond switches, offer exceptional performance with minimal crosstalk. Additionally, our PAD series of low-leakage diodes provides superior alternatives when reverse current must be minimized, with leakage currents ranging from -1 pA to -100 pA. Since 1987, we have been committed to delivering cutting-edge semiconductor solutions that meet the evolving needs of our customers. JFET Amplifiers Duals JFET Amplifiers Singles JFET Switches DMOS High Speed Switches Low Leakage Diodes Current Regulating Diodes Bipolar Transistors MOSFETs Voltage Controlled Resistors BIFET Amplifier Sample Box

Linear Systems specializes in crafting premium semiconductors, enabling customers to create top-tier products. Our product range includes Ultra-Low-Noise JFETs, DMOS Switches, Bipolar Transistors, BIFET Amplifiers, Regulating Diodes, MOSFETs, and more. Utilizing patented processes, Linear Systems delivers high-performance discrete semiconductors. Our primary markets span Audio, Hybrids, Industrial Controls, Instrumentation, Medical Electronics, Military, Space, and Test & Measurement. Contact Us: How can we assist you? Please select your request:* First name* Last name* Company name* Email* Phone number How did you hear about us?* Yes, subscribe me to your newsletter. For sample requests please complete the following: What does your company do / manufacture? Is this request for a new design or an existing design? What is the end application? Estimated annual usage (EAU) When is production expected to begin? To receive samples, please supply your FedEx, UPS, DHL, or other shipping account number Provide details about your request: Submit How to Reach Us: Address 4042 Clipper Court Fremont, CA 94538 Phone & Email (510) 490-9160 support@linearsystems.com Hours of Operation Mon - Fri 8:00 am – 5:00 pm Sat - Sun Closed

Navigate the Purchase Order Terms and Conditions page for our Fremont-based semiconductor manufacturer and gain insights into our business practices. Purchase Order Terms and Conditions A. The term "Company" as used herein shall mean Linear Integrated Systems, Inc. B. The term "Buyer" as used herein shall mean a party placing a purchase order for the Company products (the "Products"). C. THESE TERMS AND CONDITIONS OF SALE (THE "TERMS") ARE THE ONLY TERMS AND CONDITIONS OF THE AGREEMENT BETWEEN THE PARTIES. ANY AND ALL ADDITIONAL OR DIFFERENT TERMS, WHETHER IN A PURCHASE ORDER OR OTHER DOCUMENT GIVEN BEFORE OR AFTER THESE TERMS, ARE SPECIFICALLY REJECTED AND SHALL NOT BECOME PART OF THESE TERMS UNLESS AGREED TO IN WRITING BY THE COMPANY. 1. SCOPE These Terms apply to all quotations and offers made by and purchase orders accepted by the Company. Acceptance of Buyer's order is conditioned upon Buyer's acceptance of these Terms, whether by written acknowledgment, implication, or acceptance and payment of goods ordered. Any conflicting or additional terms provided by the Buyer are specifically rejected. Any changes in these Terms must be agreed upon in writing by a corporate officer of the Company. 2. PRICES, TAXES, AND DUTIES Prices are quoted in U.S. Dollars and may change without notice. Prices are firm and not subject to renegotiation, except at the Company's discretion. All prices exclude international duties, foreign taxes, and US federal, state, and local taxes. Buyer shall pay all applicable taxes and duties and indemnify the Company against any related expenses. Any price reductions based on volume discounts will be revoked if the Buyer reduces the number of parts purchased below discount levels. All price quotations are valid for 30 days, and parts must be delivered within 180 days from the quotation date. The Company may extend the validity of quotations at its discretion. 3. PAYMENT TERMS Payments shall be in U.S. Dollars. Net terms may be granted upon approval. Customer agrees to remit payment for the invoice in full by the agreed-upon due date. Should payment extend beyond the specified Net Terms, Customer acknowledges and accepts that any outstanding fee not settled within five (5) days from its due date shall accrue interest at a rate of 2.5% per month, commencing from the fifth (5th) day after the due date until payment is made. Upon payment, all fees become nonrefundable. Linear Systems retains the right, at its discretion and at any point, to adjust the monthly interest rate for overdue invoices. The Company may require payment in advance or C.O.D. The Company may suspend performance or require cash payment or other assurances if Buyer’s financial condition warrants it. Payment must be made in Alameda County, California, where any collection action may be brought. Cancellations or reschedules must be requested in writing within seven (7) days of order submission. Otherwise, the Buyer must pay liquidated damages equivalent to the full purchase price. 4. TITLE AND DELIVERY All sales are EXW (Incoterms 2000) point of shipment in the U.S. Title passes to the Buyer upon receipt of payment in full. The Company is not responsible for damage or delays after delivery to the carrier. Any claims for damages must be filed with the carrier. Shortage claims must be made within ten (10) days of shipment arrival. The Company may deliver in installments and is not liable for failure to meet delivery schedules or costs of procuring substitute goods. 5. ACCEPTANCE Buyer must inspect products upon receipt and file any claims for damage, shortages, or nonconformity immediately. Claims must be made within 30 days of receipt. No returns are accepted without a Return Material Authorization ("RMA"). 6. LIMITED WARRANTY The Company warrants products against defects in workmanship and materials for 90 days, subject to terms and conditions. The warranty does not apply to products subject to misuse, neglect, or unauthorized modifications. The Company's liability is limited to rescreening, reprocessing, replacing nonconforming products, or issuing credit for the purchase price. Warranty is contingent upon full payment. All other warranties are disclaimed. 7. INFRINGEMENT Buyer indemnifies the Company against any claims of intellectual property infringement resulting from compliance with Buyer’s designs or specifications. The Company is not liable for any infringement claims arising from the use of products in combination with non-Company products. 8. FORCE MAJEURE The Company is not liable for failure to perform due to unforeseen circumstances or causes beyond its control, such as natural disasters, war, or labor shortages. Delivery dates may be deferred during such delays. 9. CANCELLATIONS AND RESCHEDULES No cancellations or reschedules will be accepted within thirty (30) days of the earliest requested ship date. 10. LIMITATION OF LIABILITY The Company, its employees, officers, and directors are not liable for any breach of this Agreement, product order, or terms and conditions for business interruption costs, special, incidental, or consequential damages. Liability is limited to the amount paid by the Buyer for the products giving rise to the claim. 11. LIFE SUPPORT AND OTHER APPLICATIONS The Company's products are not authorized for use in life support devices or other critical applications without express written approval. Buyer assumes full risk and liability for such use and indemnifies the Company against related claims. 12. MIL-STD CLASS H AND CLASS K APPLICATIONS The Company's products are not authorized for use in MIL-STD Class H and Class K applications without express written approval. Buyer assumes full risk and liability for such use and indemnifies the Company against related claims. 13. EXPORT CONTROL Buyer agrees to comply with all applicable U.S. and destination country laws and regulations, including export controls. Buyer indemnifies the Company against damages from breaches of these laws. 14. LEAD-FREE, ROHS COMPLIANT PARTS The Company warrants products to be lead-free and RoHS compliant when ordered correctly. Electrical performance is guaranteed, but packaging reliability is not. Buyer indemnifies the Company against claims related to the use of non-compliant parts. 15. PRODUCT DISCONTINUANCE The Company reserves the right to discontinue any product at any time, with an attempt to provide twelve (12) months' notice. The Company is not liable for costs or damages due to product discontinuance. 16. ORDER ACCEPTANCE The Company reserves the right to reject any purchase order and is not liable for costs or damages resulting from non-acceptance. Selected parts are sold on a Non-Cancellable, Non-Returnable basis. Buyer’s purchases are final and subject to terms and conditions for NCNR parts. 17. DATECODE POLICY Linear Systems does not accept any restrictions on the sale or shipment of parts based on the device date code unless there are design-specific technical requirements agreed upon by both Linear Systems and the buyer. Linear Systems reserves the right to ship any date code for customer orders and samples. Linear Systems does not acknowledge a correlation between field failures and date codes exceeding 36 months. The Linear Systems Warranty applies to all products regardless of device date codes. 18. CONTROLLING LAW These terms and conditions are governed by the laws of the State of California, with sole jurisdiction and venue in Alameda County, California. 19. GENERAL LEGAL Linear Systems sells product based on our Terms & Conditions, not those of the purchaser. These terms constitute the entire contract and supersede all previous communications. Any changes must be agreed upon in writing. Unenforceable sections do not affect the remaining terms. Failure to enforce any provision does not waive it. Notices must be in writing and sent to the specified Company address. The prevailing party in any legal action is entitled to recover attorney's fees and costs. Rev K 052825 Home

Linear Systems’ Voltage Controlled Resistors feature a narrow range of resistance and high input impedance resulting in better performance of the device. Voltage Controlled Resistors Linear Systems’ Voltage Controlled Resistors feature a narrow range of resistance and high input impedance resulting in better performance of the device. These parts are ideal for Variable Gain Amplifiers, Automatic Gain Controls, Voltage Controlled Oscillators, Small Signal Attenuations and Filter Range Controls. LS26VNS N-CHANNEL JFET, VOLTAGE CONTROLLED RESISTOR Read More LS26VPS_ P-CHANNEL JFET, VOLTAGE CONTROLLED RESISTOR Read More VCR11N MONOLITHIC DUAL, N-CHANNEL, JFET VOLTAGE CONTROLLED RESISTOR Read More

Linear Systems’ low-leakage diodes provide a superior alternative to conventional diode technology when reverse current must be minimized. These devices are well suited for use in applications such as input protection for operational amplifiers. Low Leakage Diodes Linear Systems’ low-leakage diodes provide a superior alternative to conventional diode technology when reverse current must be minimized. These devices are well suited for use in applications such as input protection for operational amplifiers. J/SST/PAD Series SINGLE, LOW LEAKAGE PICO-AMP DIODES Read More ID100 Series MONOLITHIC DUAL, PICO AMP LOW LEAKAGE DIODES Read More PAD Series DFN Package SINGLE, LOW-LEAKAGE PICO AMP DIODES DFN PACKAGE Read More DPAD/SSTDPAD Series LOW LEAKAGE, MONOLITHIC DUAL, PICO-AMP DIODE Read More

The Linear Systems’ BIFET Amplifier features high Input Impedance, high transconductance, low leakage and low noise resulting in better performance than competitor parts. BIFET Amplifier The Linear Systems’ BIFET Amplifier features high Input Impedance, high transconductance, low leakage and low noise resulting in better performance than competitor parts. These devices are ideal for High Impedance Sensor Amplifier Applications. LS320 HIGH INPUT IMPENDANCE, SINGLE, BIFET AMPLIFIER Read More