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Passive Component Solutions
Passives You Can Count On: Delivered Fast, Priced Right!
In the world of electronics, Passive Components like resistors, capacitors, inductors, and transformers are the fundamental building blocks that drive innovation and reliability. These components are essential in nearly every electronic circuit, from basic control systems to complex, high-performance designs used in robotics, IoT, electric vehicles (EVs), renewable energy solutions, and advanced communication networks like 5G. At Farnell, we provide an extensive selection of passive components that meet the rigorous demands of today’s ever-evolving technologies.
Our product range includes high-quality capacitors, inductors, resistors, filters, potentiometers, trimmers, EMC/RFI suppression components, and more. As an authorised distributor for some of the industry's leading manufacturers, we ensure that our components not only deliver exceptional performance but also meet the highest standards of quality, compliance, and reliability.
We are committed to supporting tomorrow’s innovations by providing fast delivery, competitive prices, and a variety of packaging options including full reel and re-reel to accommodate any project size. Our passive components are fully traceable, meeting the stringent requirements of automotive, aerospace, and military industries, ensuring that your designs are always compliant and dependable.
At Farnell, we know that quality and speed are crucial for your projects. Whether you're working on a groundbreaking medical device, an energy-efficient power supply, or next-gen communications technology, our extensive passive component range will help you power your ideas, deliver on time, and lead the way in the next wave of technological advancements.
Join us in shaping the future — one circuit at a time.
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Capacitors
Capacitors
We offer an extensive selection of capacitors for a variety of applications, including ceramic, electrolytic, tantalum, film, and RF types. Capacitors are essential components that store and release electrical energy, stabilizing voltage and regulating power flow in circuits. They consist of two conductive plates separated by a dielectric material. We offer capacitors that are designed to meet high-performance standards across industries like consumer electronics, automotive, and industrial machinery, with a wide range of capacitance values and voltage ratings.
Learn moreCircuit Protection
Circuit Protection
We stock a comprehensive range of circuit protection products to safeguard electrical systems from damage caused by overloads, short circuits, or other fault conditions. Our selection includes fuses, PTC resettable fuses, gas discharge tubes (GDTs), branch and supplemental circuit breakers, load centers, and disconnect switches from leading manufacturers. These protective devices are designed to detect abnormal conditions and interrupt power flow, ensuring the safety, reliability, and longevity of electrical equipment in both residential and industrial settings
Learn moreCrystals & Oscillators
Crystals & Oscillators
Our wide range of oscillators include standard, MEMS, SAW, and more, offering reliable timing solutions. We also provide crystals (resonators), which deliver precise timing signals for external oscillator circuits in devices like SoCs, microcontrollers, and processors. Our oscillators integrate resonators and oscillator ICs into a single unit, ensuring stable frequency generation and signal synchronisation, optimising performance across various industries and electronic designs.
Learn moreEMC/RFI Suppression
EMC/RFI Suppression
Our EMC/RFI suppression components are ideal for a variety of applications, including consumer electronics, automotive systems, industrial controls, and telecommunications. Designed to reduce electromagnetic interference (EMI) and radio-frequency interference (RFI), these components help ensure reliable performance and signal integrity in your devices. Choose from our extensive range to enhance your designs with effective noise control, improved system stability, and compliance with regulatory standards.
Learn moreFilters
Filters
Most of our filters are capacitor-based, with options like optical infrared filters and SAW devices using piezoelectric substrates. Capacitors serve as AC filters (low pass, high pass, band pass, or band stop). We offer Diplexers for sharing channels, Duplexers for separating transmit/receive paths, Feedthrough Capacitors for high-frequency reduction, T filters for versatile functions, and SAW filters for RF applications up to 3 GHz. These filters minimise interference and meet wireless standards.
Learn moreInductors
Inductors
We stock a broad range of inductors, chokes, and coils for various applications. Inductors are passive components that store energy in a magnetic field when electric current flows through the coil. They are used in filtering, energy storage, and signal processing, and come in various types for different needs, such as power supplies, telecommunications, and automotive systems. Each inductor is designed to efficiently manage current flow and help optimise circuit performance.
Learn morePotentiometers, Trimmers & Accessories
Potentiometers, Trimmers & Accessories
Our range otentiometers, trimmers, and accessories for precise control over electrical parameters. Our selection includes rotary, linear, and slide potentiometers to suit various applications. Trimmers (or trimpots) are miniature potentiometers used for tuning and calibration in electronic circuits, often mounted on PCBs. Potentiometers are three-terminal devices that function as adjustable voltage dividers, enabling fine-tuning and precise voltage adjustments in circuits.
Learn moreResistors Fixed Value
Resistors Fixed Value
We carry an extensive range of fixed-value resistors, including carbon film, metal film, thick film, and wire-wound types, designed for precise current control in various applications like consumer electronics, automotive systems, and industrial equipment. These resistors provide constant resistance, ensuring stable current flow and protecting sensitive components. Available in various resistance values, power ratings, and tolerances, our resistors deliver reliable, durable performance for your electronic projects.
Learn moreFeatured Suppliers
Reliable Polymer Performance: KEMET T521 Series for Demanding Power Applications
The KEMET T521 Series delivers robust performance with low ESR, high ripple current capability, and enhanced reliability under harsh conditions. Ideal for DC-DC converters, industrial systems, the T521 Series meets stringent space, efficiency, and durability requirements in today’s compact power designs.
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Passives, Actives and Electromechanical Components from Würth Elektronik: More than you expect
Würth Elektronik eiSos is a manufacturer of electronic and electromechanical components for the electronics industry and a technology enabler for future-oriented electronics solutions. The 14 production facilities, spread over all important world markets, guarantee a fast supply of components.
Discover WE now
Discover Panasonic Japanese-Made Resistors: High Precision Thin Film, High Power Thick Film & Current Sensing Resistors for Optimal Performance
Manufactured in Japan with over 90 years of experience in the resistor industry, Panasonic is committed to delivering innovative and reliable solutions tailored to customer needs. Our comprehensive resistor portfolio includes both thick film and thin film technologies.
Highlights at a glance:
- High Precision Thin Film (ERA Series): Provides exceptional long-term stability without resistance drift, setting a benchmark in the market.
- High Power Thick Film (ERJP Series): Engineered specifically for compact applications, featuring an integrated soft terminal design to significantly reduce solder joint cracking risks.
- Shunt/Current Sensing Thick Film (ERJB/D, ERJ*BW/CW Series): Offers cost-effective alternatives to metal plate technologies, helping customers achieve substantial cost reductions.
Murata In-vehicle PoC inductors
By making use of suitable inductors from Murata’s extensive lineup, such as the LQW-F series developed for PoC applications such as ADAS camera interfaces, it is possible to create wide-band Bias-T circuits that employ fewer components.
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TDK is the leading provider of passive components for power electronics. We deliver the most advanced and cost-effective solutions across all power levels and application requirements.
The TDK xEVCap is a standardized and modular DC link capacitor design for powertrain inverters in passenger cars, commercial and off-highway vehicles, and machinery tools. Typically, such capacitor designs are fully customized, making the development time-consuming and practical only in large production volumes. However, with the scalable and modular xEVCap, TDK helps inverter designers meet varying capacitance and current requirements at lower volumes while saving valuable time.
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Vishay: The DNA of tech.® Enabling Safer, Smarter, and More Efficient Electronics
Vishay is a global leader in passive electronic components and discrete semiconductors, powering innovation across automotive, industrial, energy, and consumer markets. From resistors, capacitors, and inductors to thermistors and circuit protection devices, Vishay’s reliable solutions help engineers build smarter, safer, and more efficient designs.
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Special flat chip resistor solutions from KOA
KOA's resistors are an ideal choice for designers in a wide range of demanding markets such as automotive, industrial, aerospace, medical, instrumentation and power conversion.
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Driving Performance: Bourns' Broad Electronic Component Portfolio
Bourns, Inc., is a leading manufacturer and supplier of magnetic components, sensors, protection solutions, microelectronic modules, panel controls, and resistive products. Headquartered in Riverside, California, USA, Bourns serves a broad range of markets, including automotive, industrial, consumer, communications and various other market segments. With world-class design and application support, Bourns delivers innovative solutions tailored to meet the evolving needs of modern industries.
View SolutionsFeatured Products
T521 Series Tantalum Polymer Capacitor
Low ESR, high ripple, and robust stability, making T521 ideal for compact, high-performance power designs.
Innovative SMT Power Inductor WE-MXGI
Iron alloy + optimised wire = ultra-low losses, high efficiency & current in compact form. Ideal for high frequency DC/DC converters utilising the latest GaN / SiC technologies.
Thin Film, Thick Film & Current Sensing Resistors
High Precision Thin Film (ERA Series), High Power Thick Film (ERJP Series) & Current Sensing Solutions (ERJ*BW/CW Series & ERJB/D Series) from Panasonic.
In-vehicle PoC inductors
Murata Commercializes Broadband-Compatible 1210 inch size, in-vehicle PoC Inductors, reducing component size and weight.
xEVCap, a standardised and modular DC link capacitor
xEVCap is a standardised and modular DC link capacitor design for inverters in on- and off- highway vehicles of any size as well as machinery tools.
PTCEL67 – High-Energy PTC Thermistor
High-energy, self-protecting PTC thermistor for inrush current limiting up to 1200 V and energy absorption up to 340 J.
RS73 - High Precision & High Reliability Thick Film Resistors
With a T.C.R. down to ±25ppm and a tolerance as low as ±0.1%, the RS73-series is ideal for precision designs such as high-accuracy sensing or voltage detection circuits.
AEC-Q200 Compliant High Isolation Flyback Transformer
Automotive grade: 900 V, 3 W, 100-400 kHz, -40 °C to +155 °C, 10 mm creepage. High power density & isolation in a compact SMT design.
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Resources
YAGEO Group T52X/T530 Polymer Electrolytic Capacitors Datasheet
WE Introduction to Thermal Aging in Molded Power Inductors
W Voltage specification for molded inductors
Panasonic High Power Resistor
Panasonic Thick Film Shunt Resistors for Current Sensing
Murata In-vehicle PoC inductors
Murata Bias-T Circuit Inductor Selection Tool
TDK xEV CAP
TDK Press Release
Vishay PTCEL High Energy
Vishay Infographic
RS73 Series Product Flyer
Videos
Ultra Low Losses. WE-MXGI.
Comparison of Panasonic thick film resistors with other manufacturers' metal plate technology
Murata Manufacturing's Power Inductors in 90 Seconds!
Electronic Simulation PTCEL67
