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

156876 Products showing for Passive Components

903 of 999+
IQD, 16MHz Clock Oscillator, ±50ppm HCMOS, 4-Pin SMD LFSPXO018038
  • RS Stock No. 148-5366P
  • Mfr. Part No. LFSPXO018038
Each (Supplied on a Reel)
£1.232
RS PRO 200Ω Metal Film Resistor 0.4W ±0.25%
  • RS Stock No. 174-2599
Each (In a Box of 5000)
£0.033
KEMET R47 X1 Metallised Polypropylene Film Capacitor, 440 V ac, 1000 V dc, ±10%, 47nF, Through Hole
  • RS Stock No. 164-9712
  • Mfr. Part No. R474I247050A1K
Each (In a Bag of 5600)
£0.263
Wurth, WE-LHMI, 1040 Shielded Multilayer Surface Mount Inductor with a Composite Iron Powder Core, 4.7 μH ±20%
  • RS Stock No. 163-4134
  • Mfr. Part No. 74437368047
Each (On a Reel of 500)
£1.508
5kΩ, Through Hole Trimmer Potentiometer 1W Top Adjust Bourns, 3290
  • RS Stock No. 773-2726
  • Mfr. Part No. 3290W-1-502
Each
£32.67
Schaffner FN 751X, Feedthrough Capacitor, Panel Mount
  • RS Stock No. 302-9818
  • Mfr. Part No. FN7513-16-M4
Each
£58.25
Rubycon 1800μF Aluminium Electrolytic Capacitor 6.3V dc, Radial, Through Hole - 6.3ZLH1800MEFC10X16
  • RS Stock No. 703-7456
  • Mfr. Part No. 6.3ZLH1800MEFC10X16
Each (In a Pack of 10)
£0.23
Murata, LQH2MC_02, 0806 Unshielded Wire-wound SMD Inductor with a Ferrite Core, 10 μH ±10% Wire-Wound 225mA Idc
  • RS Stock No. 725-4995P
  • Mfr. Part No. LQH2MCN100K02L
Each (Supplied on a Reel)
£0.20
Murata 4.7μF Multilayer Ceramic Capacitor MLCC, 16V dc V, SMD
  • RS Stock No. 260-8823P
  • Mfr. Part No. GRM21BR71C475KE51K
Each (Supplied on a Reel)
£0.045
Panasonic 1500Ω, 0402 Thick Film Resistor ±1% 0.1W
  • RS Stock No. 243-2037
  • Mfr. Part No. ERJU02F1501X
Each (On a Tape of 100)
£0.018
Panasonic 100μF Aluminium Electrolytic Capacitor 16V dc, Surface Mount - EEE1CA101P
  • RS Stock No. 628-3986
  • Mfr. Part No. EEE1CA101P
Each (In a Pack of 5)
£0.408
Yageo 0Ω, 0201 (0603M) Thick Film SMD Resistor ±5% 0.05W
  • RS Stock No. 198-7624
  • Mfr. Part No. RC0201JR-070RL
Each (On a Tape of 100)
£0.006
KYOCERA AVX 47μF Electrolytic Tantalum Capactitor 16V dc, TAJ Series
  • RS Stock No. 135-5385P
  • Mfr. Part No. TAJD476K016RNJ
Each (Supplied on a Reel)
£0.383
Vishay 5600μF Aluminium Electrolytic Capacitor 100V dc, Snap-In - MAL225659562E3
  • RS Stock No. 875-2683
  • Mfr. Part No. MAL225659562E3
Each
£4.63
Arcol Ohmite 25W 50Ω Linear Rheostat 0.707A, RHS50RE
  • RS Stock No. 144-5529
  • Mfr. Part No. RHS50RE
Each
£96.89
Vishay CRCW 510Ω, 0805 (2012M) Thick Film SMD Resistor ±1% 0.125W
  • RS Stock No. 679-1519
  • Mfr. Part No. CRCW0805510RFKEA
Each (In a Pack of 50)
£0.035
Wurth Elektronik Wireless Charging Coil Receiver 400mA, 24 μH
  • RS Stock No. 258-5761
  • Mfr. Part No. 760308101221
Each
£5.25
Yageo 1.3Ω, 2512 (6432M) Thick Film SMD Resistor ±20% 1W
  • RS Stock No. 197-8456
  • Mfr. Part No. SR2512MK-071R3L
Each (On a Tape of 25)
£0.244
Wurth Elektronik 20000 μH Common Mode Choke 2.6Ω
  • RS Stock No. 217-7247
  • Mfr. Part No. 744220203
Each
£1.66
Vishay Single Layer Ceramic Capacitor (SLCC) 50nF 125V ac ±20% Y5V Dielectric, 125L, Through Hole +125°C Max Op. Temp.
  • RS Stock No. 181-6505
  • Mfr. Part No. 125LS50-R
Each (In a Box of 125)
£2.562
Results per page
1
903
7844

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