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

154829 Products showing for Passive Components

1075 of 999+
Vishay 100Ω Metal Film Resistor 1W ±5% PR01000101000JA100
  • RS Stock No. 683-5372P
  • Mfr. Part No. PR01000101000JA100
Each (Supplied as a Tape)
£0.143
KEMET 100μF Surface Mount Polymer Capacitor, 16V dc
  • RS Stock No. 187-7523
  • Mfr. Part No. T545V107M016ATE050
Each (In a Pack of 2)
£2.19
Through Hole Trimmer Potentiometer 0.5W Top Adjust Nidec Components
  • RS Stock No. 244-3646
  • Mfr. Part No. CT-94EW103
Each (In a Bag of 50)
£0.966
KEMET 100μF MnO2 Tantalum Capacitor 20V dc, T110 Series
  • RS Stock No. 538-1859
  • Mfr. Part No. T110D107K020AT
Each (In a Pack of 10)
£15.12
KEMET 43000μF Aluminium Electrolytic Capacitor 100V dc, Screw Terminal - ALS80A433NF100
  • RS Stock No. 144-3175
  • Mfr. Part No. ALS80A433NF100
Each (In a Box of 12)
£48.678
Eaton Rotary Potentiometer, 187043 M30C-FR47K-BLANK
  • RS Stock No. 274-1153
  • Mfr. Part No. 187043 M30C-FR47K-BLANK
Each
£49.60
Murrelektronik Limited Surge Suppressor Unit 30 V Maximum Voltage Rating Plug
  • RS Stock No. 270-9492
  • Mfr. Part No. 3124033
Each
£12.02
CHEMI-CON 180μF Aluminium Electrolytic Capacitor 400V dc, Snap-In - EKMS401VSN181MQ25S
  • RS Stock No. 914-3793
  • Mfr. Part No. EKMS401VSN181MQ25S
Each
£5.01
TE Connectivity 22Ω Wire Wound Resistor 17W ±5% SBCHE1522RJ
  • RS Stock No. 206-1653
  • Mfr. Part No. SBCHE1522RJ
Each (In a Pack of 5)
£1.536
TE Connectivity 18.2kΩ Metal Film Resistor 0.25W ±0.1% H818K2BYA
  • RS Stock No. 701-7796P
  • Mfr. Part No. H818K2BYA
Each (Supplied in a Bag)
£0.452
Bourns, 0805 Thick Film Resistor 0.1% 125mW
  • RS Stock No. 630-183
  • Mfr. Part No. CRT0805-BY-1004ELF
Each (On a Tape of 20)
£0.179
Wurth Elektronik 220μF Aluminium Electrolytic Capacitor 63V dc, Radial, Through Hole - 860020775019
  • RS Stock No. 840-5015
  • Mfr. Part No. 860020775019
Each (In a Pack of 5)
£0.542
TDK 10nF Multilayer Ceramic Capacitor MLCC, 50V dc V, ±5% , SMD
  • RS Stock No. 904-0088
  • Mfr. Part No. CGA3E2C0G1H103J080AA
Each (In a Pack of 50)
£0.116
Vishay, Through Hole Aluminium Capacitor Sample Kit
  • RS Stock No. 270-8797
  • Mfr. Part No. MAL219099001E3
Each
£39.40
EPCOS, EHV 350V 20kA, Through Hole 2 Electrode Arrester Gas Discharge Tube
  • RS Stock No. 191-1557
  • Mfr. Part No. B88069X2380S102
Each
£1.39
Bourns 3590 1kΩ Rotary Potentiometer 10-Turns 1-Gang Panel Mount, 3590S-1-102L
  • RS Stock No. 737-7638
  • Mfr. Part No. 3590S-1-102L
Each
£10.96
Welwyn 820Ω Wire Wound Resistor 3W ±5% W21-820RJI
  • RS Stock No. 139-3293
  • Mfr. Part No. W21-820RJI
Each (In a Box of 1000)
£0.428
Bourns 100kΩ, 0402 (1005M) Thick Film SMD Resistor ±1% 63mW
  • RS Stock No. 223-1669
  • Mfr. Part No. CR0402-FX-1003GLF
Each (On a Tape of 1000)
£0.002
Vishay CRCW 3.3Ω, 1206 (3216M) Thick Film SMD Resistor ±5% 0.25W
  • RS Stock No. 812-2000
  • Mfr. Part No. CRCW12063R30JNEAIF
Each (In a Bag of 25)
£0.032
NISSEI MMX Polyester Film Capacitor, 400V dc, ±10%, 4.7nF, Through Hole
  • RS Stock No. 183-3418
  • Mfr. Part No. MMX0400K47200000000
Each (In a Pack of 10)
£0.319
Results per page
1
1075
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