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

155456 Products showing for Passive Components

6131 of 999+
RS PRO 200Ω, 1206 (3216M) Thick Film SMD Resistor ±1% 0.25W
  • RS Stock No. 802-9563
Each (On a Reel of 5000)
£0.006
Vishay 43P Series 20-Turn Through Hole Trimmer Resistor with Pin Terminations, 10kΩ ±10% 1/2W ±100ppm/°C Side Adjust
  • RS Stock No. 162-237P
  • Mfr. Part No. M43P103KB40
Each (Supplied in a Box)
£3.19
TE Connectivity SM 1kΩ Metal Film SMD Resistor ±5% 5W
  • RS Stock No. 664-1691
  • Mfr. Part No. SMF51K0JT
Each (In a Pack of 5)
£0.966
Vishay 4.7nF MLCC, 1kV dc V, 10% , SMD
  • RS Stock No. 298-371
  • Mfr. Part No. VJ1825Y472KBGTW1HV
Each (On a Reel of 1000)
£0.382
Wurth Elektronik Openable Ferrite Sleeve with key, 84.5 x 19.6 x 16mm, For Computer, Medical Technology, Ribbon Cable,
  • RS Stock No. 195-3888
  • Mfr. Part No. 74272475
Each (In a Tray of 48)
£10.803
Wurth Elektronik 88 nH Common mode filter
  • RS Stock No. 248-8157
  • Mfr. Part No. 784231061
Each (On a Reel of 2000)
£0.362
Panasonic ECWFE Polypropylene Film Capacitor, 450V dc, ±5%, 470nF, Through Hole
  • RS Stock No. 105-1082
  • Mfr. Part No. ECWFE2W474JA
Each (In a Bag of 10)
£0.381
KEMET 10μF Multilayer Ceramic Capacitor MLCC, 25V dc V, ±10% , SMD
  • RS Stock No. 152-6150
  • Mfr. Part No. C1206X106K3RACTU
Each (In a Pack of 10)
£0.536
Wurth, WE-LQS, 4018 Shielded Wire-wound SMD Inductor 330 μH ±20% Moulded 200mA Idc
  • RS Stock No. 898-7914
  • Mfr. Part No. 74404042331
Each (In a Bag of 5)
£0.718
Bourns CR0805 200kΩ, 0805 (2012M) Thick Film SMD Resistor ±1% 0.125W
  • RS Stock No. 905-2858
  • Mfr. Part No. CR0805-FX-2003ELF
Each (On a Reel of 5000)
£0.003
Wurth Elektronik 2 x 700 μH 21.5 A Common Mode Choke 2 x 3.8mΩ
  • RS Stock No. 172-5431
  • Mfr. Part No. 744830007215
Each (In a Tray of 12)
£11.568
Wurth, WE-GFH, 4532 Wire-wound SMD Inductor with a Iron Core, 10 μH ±10% Moulded 825mA Idc Q:35
  • RS Stock No. 899-7233
  • Mfr. Part No. 744766910
Each (In a Bag of 10)
£0.337
Bourns CR0603 51.1kΩ, 0603 (1608M) Thick Film SMD Resistor ±1% 0.1W
  • RS Stock No. 905-2754
  • Mfr. Part No. CR0603-FX-5112ELF
Each (On a Reel of 5000)
£0.002
Panasonic ERJP03 1kΩ, 0603 (1608M) Thick Film SMD Resistor ±1% 0.2W
  • RS Stock No. 721-7340
  • Mfr. Part No. ERJP03F1001V
Each (In a Pack of 5)
£0.07
Wurth, WE-KI, 1008A Shielded Wire-wound SMD Inductor with a Ceramic Core, 0.82 μH ±5% Wire-Wound 180mA Idc Q:45
  • RS Stock No. 883-0127
  • Mfr. Part No. 744762282A
Each (In a Bag of 10)
£0.375
Wurth Elektronik 68μF Surface Mount Polymer Capacitor, 6.3V dc
  • RS Stock No. 838-7409
  • Mfr. Part No. 875105142003
Each (In a Pack of 10)
£0.415
KYOCERA AVX 330nF MnO2 Tantalum Capacitor 50V dc, TAJ Series
  • RS Stock No. 547-9647
  • Mfr. Part No. TAJB334K050RNJ
Each (In a Pack of 25)
£0.242
Nichicon 22μF Aluminium Electrolytic Capacitor 50V dc, Surface Mount - UWT1H220MCL1GB
  • RS Stock No. 520-2009
  • Mfr. Part No. UWT1H220MCL1GB
Each (In a Pack of 25)
£0.224
Shielding Cab Frame 52 x 6 x 26.7
  • RS Stock No. 486-999
  • Mfr. Part No. 3670520
Each
£2.78
Vishay 64W Series 19 (Electrical), 22 (Mechanical)-Turn Through Hole Trimmer Resistor with Pin Terminations, 200kΩ
  • RS Stock No. 154-2094P
  • Mfr. Part No. M64W204KB40
Each (Supplied in a Bag)
£2.11
Results per page
1
6131
7773

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