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

155496 Products showing for Passive Components

976 of 999+
Alpha 250Ω Metal Foil Resistor 0.3W ±0.01% MAY250R00T
  • RS Stock No. 158-0270
  • Mfr. Part No. MAY250R00T
Each
£19.10
Panasonic 10μF Aluminium Electrolytic Aluminium Electrolytic Capacitor 50V dc, Radial, Through Hole - ECEA1HN100U
  • RS Stock No. 727-0486P
  • Mfr. Part No. ECEA1HN100U
Each (Supplied in a Bag)
£0.149
Nichicon 1500μF Aluminium Electrolytic Capacitor 100V dc, Snap-In - LGU2A152MELZ
  • RS Stock No. 846-6984
  • Mfr. Part No. LGU2A152MELZ
Each
£4.17
OKW 23mm Black Potentiometer Knob for 6mm Shaft Round Shaft, A1321860
  • RS Stock No. 283-2025
  • Mfr. Part No. A1321860
Each
£8.21
TE Connectivity, 0612 (1632M) Thick Film Surface Mount Fixed Resistor 1% 1.5W
  • RS Stock No. 274-7194
  • Mfr. Part No. 3430B2F330KTD
Each (On a Tape of 50)
£0.106
Wurth Elektronik Coupled Inductor Iron Oxide Core , 22 μH
  • RS Stock No. 258-5722P
  • Mfr. Part No. 744889020220
Each (Supplied on a Reel)
£1.88
Murata Ferrite Bead (Chip Ferrite Bead), 1.6 x 0.8 x 0.8mm (0603 (1608M)), 470Ω impedance at 100 MHz, 550Ω impedance at
  • RS Stock No. 792-6252
  • Mfr. Part No. BLM18EG471SN1D
Each (In a Bag of 25)
£0.094
Bourns Bussed Resistor Network 2.2kΩ ±2% 9 Resistors, 1.25W Total, SIP package 4600X Through Hole
  • RS Stock No. 522-4829
  • Mfr. Part No. 4610X-101-222LF
Each (In a Pack of 25)
£0.175
TE Connectivity Wirewound Wirewound Resistor 1W 5% EP1WSSS1R5J
  • RS Stock No. 272-2467
  • Mfr. Part No. EP1WSSS1R5J
Each (On a Tape of 10)
£0.23
Vishay 368, MKT368 Polyester Film Capacitor, 63 V ac, 100 V dc, ±10%, 220nF, Through Hole
  • RS Stock No. 115-584
  • Mfr. Part No. BFC236825224
Each (In a Pack of 5)
£0.888
Panasonic 270μF Through Hole Polymer Capacitor, 16V dc
  • RS Stock No. 795-5528
  • Mfr. Part No. 16SEPF270M
Each (In a Pack of 5)
£1.102
TE Connectivity 100Ω Wire Wound Resistor 5W ±5% EP5W100RJ
  • RS Stock No. 762-9197
  • Mfr. Part No. EP5W100RJ
Each (In a Pack of 10)
£0.55
KEMET C4AQ Metallised Polypropylene Film Capacitor, 500V dc, ±10%, 100μF
  • RS Stock No. 174-4333
  • Mfr. Part No. C4AQLBW6100A3MK
Each (In a Bag of 27)
£18.21
TE Connectivity M 470Ω Rotary Potentiometer 1-Gang Panel Mount, 404802692034
  • RS Stock No. 162-798
  • Mfr. Part No. 404802692034
Each
£23.48
Panasonic ERA 5.1kΩ, 0603 (1608M) Thin Film SMD Resistor ±0.1% 0.1W
  • RS Stock No. 180-9856
  • Mfr. Part No. ERA3APB512V
Each (On a Reel of 500)
£0.17
TDK 220nF Multilayer Ceramic Capacitor MLCC, 25V dc V, SMD
  • RS Stock No. 242-7368P
  • Mfr. Part No. C1608X7R1E224K080AC
Each (Supplied on a Reel)
£0.034
KEMET 10nF Multilayer Ceramic Capacitor MLCC, 2kV dc V, ±10% , SMD
  • RS Stock No. 146-4156
  • Mfr. Part No. C1812C103KGRACTU
Each (On a Reel of 500)
£0.512
Panasonic ECWF(A) Polypropylene Film Capacitor, 450V dc, ±5%, 1μF, Through Hole
  • RS Stock No. 727-0130
  • Mfr. Part No. ECWF2W105JA
Each (In a Pack of 5)
£0.902
KEMET 22μF MnO2 Tantalum Capacitor 16V dc, T350 Series
  • RS Stock No. 538-1944
  • Mfr. Part No. T350F226K016AT
Each (In a Pack of 5)
£3.13
Panasonic ERJP08 1kΩ, 1206 (3216M) Thick Film SMD Resistor ±5% 0.66W
  • RS Stock No. 919-0556
  • Mfr. Part No. ERJP08J102V
Each (On a Reel of 5000)
£0.016
Results per page
1
976
7775

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