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

154820 Products showing for Passive Components

365 of 999+
Arcol 2.5Ω Fixed Resistor 30W ±1% AP830 2R5 F
  • RS Stock No. 166-4770
  • Mfr. Part No. AP830 2R5 F
Each (In a Tray of 50)
£3.064
RS PRO, 100mΩ 200W Wire Wound Chassis Mount Resistor ±5%
  • RS Stock No. 174-2558
1 Box of 1
£30.26
KEMET 3300μF Aluminium Electrolytic Capacitor 450V dc, Screw Terminal - ALS30A332NP450
  • RS Stock No. 381-9419
  • Mfr. Part No. ALS30A332NP450
Each
£53.94
Panasonic 3.3μF Aluminium Electrolytic Capacitor 50V dc, Surface Mount - EEEFC1H3R3R
  • RS Stock No. 537-0304
  • Mfr. Part No. EEEFC1H3R3R
Each (In a Pack of 5)
£0.312
Yageo 39kΩ, 0805 (2012M) Thick Film SMD Resistor ±1% 0.25 W, 0.125 W
  • RS Stock No. 199-5714
  • Mfr. Part No. RC0805FR-0739KL
Each (On a Tape of 100)
£0.011
KEMET 4.7μF Multilayer Ceramic Capacitor MLCC, 50V dc V, ±10% , SMD
  • RS Stock No. 691-1265P
  • Mfr. Part No. C1210C475K5RACTU
Each (Supplied on a Reel)
£0.271
EPCOS B32924C Polypropylene Film Capacitor, 305V ac, ±20%, 1.5μF, Through Hole
  • RS Stock No. 497-4141
  • Mfr. Part No. B32924C3155M000
Each (In a Pack of 5)
£0.938
Wurth Elektronik Ferrite Bead (High Current), 3 x 2.55 x 8.5mm (8530)
  • RS Stock No. 332-627
  • Mfr. Part No. 74279391
Each (On a Tape of 10)
£0.776
Abracon 16MHz Crystal Unit ±25ppm SMD 2-Pin 11.4 x 4.7 x 4.1mm
  • RS Stock No. 187-5920
  • Mfr. Part No. ABLS-16.000MHz-D-3-Y-T
Each (In a Pack of 25)
£0.127
Vishay CRCW 41.2kΩ, 0603 (1608M) Thick Film SMD Resistor ±1% 0.1W
  • RS Stock No. 679-0368
  • Mfr. Part No. CRCW060341K2FKEA
Each (In a Pack of 50)
£0.02
Nichicon 100μF Aluminium Electrolytic Capacitor 50V dc, Surface Mount - UWT1H101MNL1GS
  • RS Stock No. 739-2870
  • Mfr. Part No. UWT1H101MNL1GS
Each (In a Pack of 10)
£0.211
KYOCERA AVX, Surface Mount Tantalum Capacitor Kit 150 pieces
  • RS Stock No. 547-9007
  • Mfr. Part No. TANTTPM001R
Each
£37.59
TE Connectivity 1.2kΩ Metal Film Resistor 1W ±5% ROX1SJ1K2
  • RS Stock No. 125-1176P
  • Mfr. Part No. ROX1SJ1K2
Each (Supplied in a Box)
£0.136
RS PRO 350Ω Metal Film Resistor 0.4W ±0.25%
  • RS Stock No. 174-3084
Each (In a Pack of 100)
£0.064
TE Connectivity, 3.3Ω 250W Wire Wound Chassis Mount Resistor HSC2503R3J ±5%
  • RS Stock No. 720-5558
  • Mfr. Part No. HSC2503R3J
Each
£42.93
ROHM MCR 10kΩ, 1206 (3216M) Thick Film SMD Resistor ±1% 0.25W
  • RS Stock No. 901-3733
  • Mfr. Part No. MCR18EZPF1002
Each (In a Bag of 100)
£0.017
Vishay 200Ω, 1206 (3216M) Surface Mount Fixed Resistor ±0.1% 2.5W
  • RS Stock No. 230-3057
  • Mfr. Part No. PHPA1206E2000BST1
Each (On a Tape of 5)
£1.782
Panasonic ERJP06 2.2kΩ, 0805 (2012M) Thick Film SMD Resistor ±1% 0.5W
  • RS Stock No. 721-7775P
  • Mfr. Part No. ERJP06F2201V
Each (Supplied on a Reel)
£0.062
Vishay 3.3Ω Metal Film Resistor 2W ±5% PR02000203308JA100
  • RS Stock No. 683-5629P
  • Mfr. Part No. PR02000203308JA100
Each (Supplied as a Tape)
£0.193
Arcol 50Ω Non-Inductive Resistor 50W ±1% AP851 50R F 50PPM
  • RS Stock No. 862-5736
  • Mfr. Part No. AP851 50R F 50PPM
Each
£6.18
Results per page
1
365
7741

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