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

154833 Products showing for Passive Components

323 of 999+
Panasonic 470μF Aluminium Electrolytic Capacitor 50V dc, Surface Mount - EEEFK1H471AM
  • RS Stock No. 708-3948
  • Mfr. Part No. EEEFK1H471AM
Each
£1.61
TDK 100nF Multilayer Ceramic Capacitor MLCC, 50V dc V, ±10% , SMD
  • RS Stock No. 915-5613
  • Mfr. Part No. CGA2B3X7R1H104K050BD
Each (In a Pack of 50)
£0.063
Murata 2.2μF Multilayer Ceramic Capacitor MLCC, 35V dc V, ±10% , SMD
  • RS Stock No. 165-6486
  • Mfr. Part No. GRT188C8YA225KE13D
Each (In a Pack of 25)
£0.114
Murata 100nF Multilayer Ceramic Capacitor MLCC, 16V dc V, ±10% , SMD
  • RS Stock No. 884-7040P
  • Mfr. Part No. GRM033B31C104KE84D
Each (Supplied on a Reel)
£0.007
KEMET 47μF MnO2 Tantalum Capacitor 25V dc, T350 Series
  • RS Stock No. 172-6798
  • Mfr. Part No. T350K476K025AT
Each (In a Bag of 100)
£8.578
TDK Ceramic Single Layer Capacitor 15pF 3kV dc ±5%, CC45 series, Through Hole
  • RS Stock No. 262-1955
  • Mfr. Part No. CC45SL3FD150JYGNA
Each (In a Bag of 10)
£0.173
Murata, LQG18H, 0603 (1608M) Wire-wound SMD Inductor 4.7 nH ±0.3nH Wire-Wound 450mA Idc Q:12
  • RS Stock No. 725-4960
  • Mfr. Part No. LQG18HN4N7S00D
Each (In a Pack of 10)
£0.022
RS PRO 470kΩ Carbon Film Resistor 0.25W ±5%
  • RS Stock No. 739-7676
Each (In a Pack of 5000)
£0.009
RS PRO 390kΩ Carbon Film Resistor 0.25W ±5%
  • RS Stock No. 739-7663
Each (In a Pack of 5000)
£0.011
RS PRO 33kΩ Carbon Film Resistor 0.25W ±5%
  • RS Stock No. 739-7572
Each (In a Pack of 5000)
£0.009
RS PRO 18kΩ Carbon Film Resistor 0.25W ±5%
  • RS Stock No. 739-7550
Each (In a Pack of 5000)
£0.009
TE Connectivity, 1Ω 200W Wire Wound Chassis Mount Resistor TE200B1R0J ±5%
  • RS Stock No. 701-5692
  • Mfr. Part No. TE200B1R0J
Each
£27.78
Vishay CRCW 4.7kΩ, 0805 (2012M) Thick Film SMD Resistor ±1% 0.5W
  • RS Stock No. 812-3574
  • Mfr. Part No. CRCW08054K70FKEAHP
Each (In a Bag of 25)
£0.059
Alps Alpine 24 Pulse Incremental Mechanical Rotary Encoder with a 6 mm Flat Shaft (Indexed), Through Hole
  • RS Stock No. 729-5836
  • Mfr. Part No. EC12E2420801
Each
£2.84
Panasonic ERA 200kΩ, 0805 (2012M) Thin Film SMD Resistor ±0.1% 0.125W
  • RS Stock No. 828-0594P
  • Mfr. Part No. ERA6AEB204V
Each (Supplied on a Reel)
£0.11
EPCOS B32923C Metallised Polypropylene Film Capacitor, 305 V ac, 630 V dc, ±20%, 2.2μF, Through Hole
  • RS Stock No. 882-9509
  • Mfr. Part No. B32923C3225M000
Each (In a Pack of 5)
£1.296
Nova, SMR-03 Thick Film, SMT 144 Resistor Kit, with 16260 pieces, 1 KΩ → 10MΩ
  • RS Stock No. 107-1615
  • Mfr. Part No. SMR-03
Each
£212.27
Murata, LQW18A_00, 0603 Wire-wound SMD Inductor 10 nH ±5% Wire-Wound 650mA Idc Q:35
  • RS Stock No. 724-2908
  • Mfr. Part No. LQW18AN10NJ00D
Each (In a Pack of 10)
£0.062
Vishay, IHLP, 2225 (5664M) Shielded Wire-wound SMD Inductor 6.8 μH ± 20% Shielded 5.5A Idc
  • RS Stock No. 223-7277P
  • Mfr. Part No. IHLP2525CZER6R8M11
Each (Supplied on a Reel)
£0.75
TE Connectivity, 100Ω 1kW Wire Wound Chassis Mount Resistor TE1000B100RJ ±5%
  • RS Stock No. 701-5800
  • Mfr. Part No. TE1000B100RJ
Each
£66.94
Results per page
1
323
7742

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