Sample Boxes Sample Boxes DFN Sample Kit INCLUDES A SAMPLING OF PARTS OFFERED IN THE DFN PACKAGE Read More

MONOLITHIC DUAL AND SINGLE, PNP TRANSISTOR < Back LS3550 Series MONOLITHIC DUAL AND SINGLE, PNP TRANSISTOR The LS3550 Monolithic Dual and Single, PNP Transistor is a Higher Current Version of the MP350, MP351, and MP352 Series. It is ideal for Small Signal Transistor, 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: LS3550A TO-71 6L RoHS LS3550B TO-71 6L RoHS LS3550C TO-71 6L RoHS LS3550A TO-78 6L RoHS LS3550B TO-78 6L RoHS LS3550C TO-78 6L RoHS LS3550A PDIP 8L RoHS LS3550B PDIP 8L RoHS LS3550C PDIP 8L RoHS LS3550A SOIC 8L RoHS LS3550B SOIC 8L RoHS LS3550C SOIC 8L RoHS LS3550A Die LS3550B Die LS3550C Die Datasheet Spice Model Application Notes

Explore our services and get in touch Our Services 01. Custom Project This service involves collaborating closely with you to define the scope, objectives, and deliverables for a unique project tailored to your specific needs. We will support you from initial concept through to detailed planning, ensuring all aspects are covered. This ensures a clear roadmap for successful execution. Show more 02. Personal Solution Planning We offer dedicated one-on-one sessions to understand your individual challenges and goals. Through active listening and guided discussion, we help you map out a personalized strategy for achieving your desired outcomes. Our aim is to provide clear, actionable steps for your personal journey. Show more 03. Expert Guidance Package Gain insights and strategic direction from industry professionals dedicated to your success. This package includes focused sessions designed to explore potential solutions and identify optimal paths forward for your business or personal goals. We equip you with the knowledge to make informed decisions. Show more

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 Explore our portfolio of precision analog semiconductors. Below you'll find our product families, each designed to deliver exceptional performance in demanding analog applications. Request a Quote Request Samples Contact an Engineer Dual JFETs Ultra-low-noise matched monolithic JFETs for precision analog circuits requiring exceptional noise performance, thermal tracking, and device matching. Single JFETs High-performance single JFETs designed for low-noise amplification, high input impedance, and precision analog signal processing. JFET Switches Precision JFET analog switches offering excellent linearity, low distortion, and reliable switching for demanding analog designs. DMOS Switches High-speed lateral DMOS switches with nanosecond switching speeds, extremely low crosstalk, and exceptional isolation for precision analog switching applications. Low Leakage Diodes Ultra-low reverse leakage diodes with leakage currents as low as 1 pA, ideal for electrometers, photodiodes, and precision measurement systems. Current Regulating Diodes Precision current-regulating diodes (CRDs) providing stable constant-current sources over a wide operating voltage range. Bipolar Transistors Low-noise bipolar transistors available in single and monolithic dual configurations for precision analog and instrumentation applications. MOSFETs Precision MOSFETs designed for analog switching, signal conditioning, and specialized low-power applications. VCRs Voltage Controlled Resistors that provide precise, voltage-variable resistance for automatic gain control, filtering, and analog signal processing. BIFET Amplifier Low-noise BiFET operational amplifiers combining JFET inputs with bipolar output stages for high input impedance and precision analog performance. Sample Box Evaluate our precision analog semiconductors with convenient sample kits featuring a selection of our most popular devices.

MONOLITHIC DUAL, NPN TRANSISTOR < Back IT124 MONOLITHIC DUAL, NPN TRANSISTOR Previous Next

MONOLITHIC DUAL, PNP TRANSISTOR < Back IT130 Series MONOLITHIC DUAL, PNP TRANSISTOR Previous Next

SINGLE, P-CHANNEL ENHANCEMENT MODE MOSFET < Back 3N163 Series SINGLE, P-CHANNEL ENHANCEMENT MODE MOSFET The 3N163 Series Single, 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 the TO-72 4L RoHS and SOT-143 4L RoHS package, as well as bare die. All Linear Systems devices are available with special testing to customer specifications. Ordering Information Below are the options you have when ordering this part series: 3N163 TO-72 4L RoHS 3N164 TO-72 4L RoHS 3N163 SOT-143 4L RoHS 3N164 SOT-143 4L RoHS 3N163 Die 3N164 Die Datasheet Spice Model Application Notes

Linear Systems’ small signal MOSFETs consist of two MOSFETs on the same piece of silicon resulting in better matching and better performance over temperature. MOSFET Transistors Linear Systems’ small signal MOSFET transistors consist of two MOSFETs on the same piece of silicon resulting in better matching and better performance over temperature. They also feature high input impedance, high breakdown voltage, and low capacitance. These devices are commonly used as switches in power electronics circuits and as amplifiers in analog circuits. 3N163 Series SINGLE, P-CHANNEL ENHANCEMENT MODE MOSFET Read More 2N4351 Series SINGLE, N-CHANNEL ENHANCEMENT MODE MOSFET Read More 3N165 Series MONOLITHIC DUAL, P-CHANNEL ENHANCEMENT MODE MOSFET Read More 3N190 Series MONOLITHIC-DUEL, P-CHANNEL ENHANCEMENT MODE MOSFET Read More 3N170 Series SINGLE, N-CHANNEL ENHANCEMENT MODE MOSFET Read More

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. Design Better Analog Systems with the Industry’s Lowest-Noise JFETs When your design depends on capturing the smallest signals, every component matters. Linear Systems manufactures ultra-low-noise JFETs and precision analog semiconductors trusted in demanding applications worldwide. From prototype to production, our components are engineered to deliver the performance, consistency, and reliability today's analog designs require. Browse Products Request Samples Contact an Engineer Why Engineers Choose Linear Systems Linear Systems combines precision analog semiconductors with industry-leading custom screening, obsolete part replacement solutions, and direct engineering support. Our U.S. manufacturing and rigorous quality standards ensure the consistency and reliability engineers depend on for their most demanding designs. Start Now Explore our Product Families Discover our complete portfolio of precision analog semiconductors engineered for applications where low noise, low leakage, precision matching, and long-term reliability are essential. Whether you're designing a new system or replacing an obsolete component, Linear Systems offers high-performance solutions backed by expert engineering support. Dual JFETs DMOS Single JFETs Low-Leakage Diodes JFET Switches Current Regulating Diodes Bipolar Transistors MOSFETs Voltage Controlled Resistors Bipolar Amplifiers Stay Connected Be the first to hear about new products, technical articles, application notes, and engineering resources. Enter your email here Sign Up Thanks for submitting!

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. How can we assist you? Please complete the form below and we will contact you promptly. 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

Ultra-Low Noise, High Input Impedance, N-Channel JFET Amplifier < Back LSBF862 Ultra-Low Noise, High Input Impedance, N-Channel JFET Amplifier The LSBF862 Single, Ultra-Low Noise, High Input Impedance, N-Channel JFET Amplifier is a direct, improved replacement for the discontinued NXP BF862. It is designed for applications requiring exceptional noise performance and high-impedance signal amplification. Engineered for precision and reliability, the LSBF862 provides superior noise characteristics, higher breakdown voltage, and greater flexibility through selectable testing and screening options. It is ideal for low-noise audio, acoustic, and sensor front-end applications. Available in the SOT-23 3L RoHS package, as well as in custom die form, the LSBF862 supports both legacy and next-generation designs. Key Features Low 10 Hz Noise High Input Impedance, Low Capacitance Higher −40 V Gate-Source Breakdown Voltage Radiation Tolerant (No Special Hardening Required) Symmetrical Geometry — Source/Drain Interchangeable Special Testing Available for VGS, IDSS, and Other DC Parameters Benefits Superior Noise Performance for Audio, Acoustic, Instrumentation and Sensor Applications Seamless Drop-In Replacement for the BF862 — No Redesign Required Supports Repairs and Spares for Legacy Designs Available Customization by Specialized Screening and Selection Applications Audio & Acoustic Amplifiers Charge, Buffer, and Sample-and-Hold Circuits Discrete Operational Amplifiers Transimpedance Amplifiers (TIAs) Photodiode and Piezoelectric Preamplifiers Microphone, Hydrophone, and Sonar Front-Ends Medical Instrumentation: ECG, EEG, EKG, MRI, PET High-Impedance Probes and Spectrum Analyzers Frequently Asked Questions (FAQ) Is the LSBF862 a direct BF862 replacement? Yes. It is a drop-in, improved replacement with lower noise, higher breakdown, and long-term availability. Is it in active production? Yes. Current available inventory of SOT-23 3 Lead package and Die Form, with no plans to discontinue. Is the LSBF862 available with special sorting or matching? Yes. 100% Special testing is offered Additional Special Screening & Customization Options Special screening is available across Linear Systems’ product lineup — including JFETs, MOSFETs, Bipolar Transistors, Current Regulators, and Diodes. Available in the SOT-23 3L RoHS package, as well as in die form. Connect with our technical team to tailor your requirements: Email support@linearsystems.com or call (510) 490-9160 MOQ applies to all specialized services. Click Here to Request Free LSBF862 Samples Ordering Information Below are the available configurations for the LSBF862 series: Standard Part Call-Out Select Part Call-Out (Select Parts Include SEL + 4 Digit Numeric Code) LSBF862 SOT-23 3L RoHS LSBF862 SOT-23 3L RoHS SELXXXX LSBF862 Die LSBF862 Die SELXXXX When ordering, include the full Linear Systems part number and package type. Custom screening selections (VGS, IDSS, etc.) available upon request. Datasheet Spice Model Application Notes

LOG CONFORMANCE, MONOLITHIC DUAL, PNP TRANSISTOR < Back LS358 LOG CONFORMANCE, MONOLITHIC DUAL, PNP TRANSISTOR Previous Next