Passive Components

A passive component is a module that does not require energy to operate, except for the available alternating current (AC) circuit that it is connected to. A passive module is not capable of power gain and is not a source of energy. A typical passive component would be: resistors, inductors, capacitors and transformers which together are required to build any electrical or electronic circuit.

Passive devices can be used individually or connected together within a circuit, either in a series or in a parallel combination to control complex circuits or signals.

Types of Passive Components

  • Capacitors

A capacitor is a component that can gather and hold a charge in a way that is similar to how a battery functions. The capacitor is made of 2 close conductors (usually plates) that are separated by a dielectric material. The plates accumulate electric charge when connected to power source. One plate accumulates positive charge and the other plate accumulates negative charge. It can hold the charge even when the voltage is no longer applied. Different types of capacitors are film capacitors, mica capacitors, ceramic capacitors, electrolytic capacitors, aluminium electrolytic capacitors, tantalum electrolytic capacitors and power factor correction capacitors

  • Resistors

A Resistor is an electrical device that resists the flow of electrical current. Although a resistor does not amplify or shape the electric current in any way its a powerful little device as it enables you to put the brakes on current flow in a very controlled way

  • Inductors

An inductor is a passive device that can store or deliver energy but cannot generate it. An ideal inductor is lossless, meaning that it can store energy indefinitely as no energy is lost as heat. Inductors are sometimes known as coils, chokes, electromagnets and solenoids

  • Ferrite Cores

A ferrite core is a ceramic compound that includes a mix of iron and another type of metal. Ferrite is common in many types of electrical components, including antennas. This magnetic core features wound components, such as windings from a transformer and inductors. It is useful because it offers low electrical conductivity along with high magnetic permeability.

  • Surge Protection Components

Surge protectors are a part of nearly every home and office today. They provide your expensive electronic devices with added protection against surges of electricity, which would ultimately destroy them.

Antennas
Antennas
Capacitors
Capacitors
Crystals, Oscillators & Resonators
Crystals, Oscillators & Resonators
EMI Filters & Protection
EMI Filters & Protection
Fixed Resistors
Fixed Resistors
Inductors
Inductors
Passive Components Kits
Passive Components Kits
Rotary Encoders
Rotary Encoders
Sounder, Buzzer & Microphone Components
Sounder, Buzzer & Microphone Components
Surge Protection Components
Surge Protection Components
Variable Resistors
Variable Resistors

153912 Products showing for Passive Components

901 of 999+
KOA 62kΩ Metal Film Resistor 0.25W ±1% MF1/4CC6202F
  • RS Stock No. 463-9854
  • Mfr. Part No. MF1/4CC6202F
Each (In a Bag of 100)
£0.182
Arcol Ohmite, 1206 (3216M) Chip Jumper Surface Mount Fixed Resistor 0.32W
  • RS Stock No. 263-4266
  • Mfr. Part No. JR1206X40E
Each (On a Tape of 10)
£0.196
EPCOS, B82789, 1812 (4532M) SMD Common Mode Choke with a Ferrite Core, 51 μH -30% Wire-Wound 250mA Idc
  • RS Stock No. 177-4877
  • Mfr. Part No. B82789C0513N002
Each (On a Reel of 2500)
£0.528
Arcol Ohmite 22Ω Silicone Ceramic Resistor 2W ±10% OY220KE
  • RS Stock No. 126-0427
  • Mfr. Part No. OY220KE
Each (In a Bag of 5)
£1.688
Nichicon 47μF Aluminium Electrolytic Capacitor 50V dc, Radial, Through Hole - UPW1H470MED
  • RS Stock No. 715-2836
  • Mfr. Part No. UPW1H470MED
Each (In a Pack of 10)
£0.18
RS PRO 10A 250 V ac, Chassis Mount RFI Filter, Single Phase
  • RS Stock No. 237-8700
Each
£10.19
TRACOPOWER 2.2 μH 4.8 A Common Mode Choke
  • RS Stock No. 745-1203
  • Mfr. Part No. TCK-059
Each
£3.11
Samsung Electro-Mechanics 4.7μF Multilayer Ceramic Capacitor MLCC, 16V dc V, ±10% , SMD
  • RS Stock No. 766-1037
  • Mfr. Part No. CL21B475KOFNNNG
Each (In a Pack of 50)
£0.144
Samsung Electro-Mechanics 2.2μF Multilayer Ceramic Capacitor MLCC, 25V dc V, ±10% , SMD
  • RS Stock No. 766-6767
  • Mfr. Part No. CL31B225KAHNNNE
Each (On a Reel of 2000)
£0.028
EPCOS B32672 Polypropylene Film Capacitor, 630V dc, ±10%, 1μF, Through Hole
  • RS Stock No. 241-6601
  • Mfr. Part No. B32672P6105K000
Each (In a Bag of 5)
£1.05
RS PRO Black Pointer Knob
  • RS Stock No. 463-8586
Each (In a Pack of 5)
£1.702
Ducati Energia 4.16.10 Polypropylene Film Capacitor, 450V ac, ±5%, 18μF, Stud Mount
  • RS Stock No. 172-8196
  • Mfr. Part No. 4.16.10.24.64
Each (In a Box of 100)
£5.106
KOA 680Ω, 0603 (1608M) Thick Film SMD Resistor ±1% 0.33W
  • RS Stock No. 225-1767
  • Mfr. Part No. SG73P1JTTD6800F
Each (On a Tape of 100)
£0.038
TE Connectivity 2.4kΩ Metal Oxide Resistor 0.5W ±5% ROX05SJ2K4
  • RS Stock No. 187-0708
  • Mfr. Part No. ROX05SJ2K4
Each (In a Pack of 20)
£0.063
Schaffner, FN2020 6A 250 V ac/dc 400Hz, Chassis Mount EMI Filter, Fast-On, Single Phase
  • RS Stock No. 219-2842
  • Mfr. Part No. FN2020-6-06
Each
£13.57
Yageo 2.32kΩ, 0402 (1005M) Thin Film SMD Resistor ±0.1% 0.0625W
  • RS Stock No. 199-1314P
  • Mfr. Part No. RT0402BRD072K32L
Each (Supplied on a Reel)
£0.077
Arcol RWS 1Ω Wire Wound SMD Resistor ±1% 1W
  • RS Stock No. 809-5110
  • Mfr. Part No. RWS1 1R F B
Each
£1.26
Bourns 91 2.5kΩ Rotary Potentiometer 1-Gang Panel Mount, 91A1A-B28-E12L
  • RS Stock No. 522-5197
  • Mfr. Part No. 91A1A-B28-E12L
Each
£4.73
KEMET SMR Metallised Polyphenylene Sulphide Film Capacitor, 30 V ac, 50V dc, ±5%, 1nF, Through Hole
  • RS Stock No. 171-9089
  • Mfr. Part No. SMR5102J50J01L16.5CBULK
Each (In a Bag of 2000)
£0.217
Arcol RWS 1Ω Wire Wound SMD Resistor ±1% 3W
  • RS Stock No. 809-2678
  • Mfr. Part No. RWS3 1R F B
Each
£1.49
Results per page
1
901
7696

Guides & Articles

Article image
LED Resistor Value Calculator
A calculator designed to help you understand what resistance value you require from your LED resistor, in order to ensure safety for your LED lighting.
Learn more
Article image
Resistors Guide
What are the different types of resistors? Learn more in our comprehensive guide.
Read more
Article image
Potentiometers Guide
Our potentiometers guide will help you understand their uses, how they work, the various types and characteristics.
Read more
Article image
A Guide to Voltage Controlled Oscillators
This guide covers voltage controlled oscillators, explaining what they are, the different types available, and examples of how they fit into a circuit.
Explore VCOs

Related links