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

40 of 999+
RS PRO 10kΩ, 0805 (2012M) Thin Film Resistor 0.1% 0.4W
  • RS Stock No. 243-0652
Each (On a Tape of 10)
£0.408
Panasonic ERJ 2.2kΩ, 0805 (2012M) Thick Film SMD Resistor ±0.5% 0.1W
  • RS Stock No. 810-1750P
  • Mfr. Part No. ERJ6RBD2201V
Each (Supplied on a Reel)
£0.02
Murata 100nF Multilayer Ceramic Capacitor MLCC, 16V dc V, ±10% , SMD
  • RS Stock No. 276-3726
  • Mfr. Part No. GRM033Z71C104KE14D
Each (On a Reel of 15000)
£0.003
Vishay MMB0207 18Ω, Melf 0207 Thin Film SMD Resistor ±1% 0.4W
  • RS Stock No. 678-7946
  • Mfr. Part No. MMB02070C1809FB200
Each (In a Pack of 25)
£0.146
KEMET 330nF Multilayer Ceramic Capacitor MLCC, 50V dc V, ±20% , Through Hole
  • RS Stock No. 801-5390
  • Mfr. Part No. C320C334M5U5TA
Each (In a Pack of 25)
£0.175
Bourns 3680 10kΩ Digital Display Precision Potentiometer 2-Gang Panel Mount, 3682S-1-103L
  • RS Stock No. 248-6759
  • Mfr. Part No. 3682S-1-103L
Each
£34.90
Panasonic 22μF Aluminium Electrolytic Capacitor 25V dc, Radial, Through Hole - EEAFC1E220
  • RS Stock No. 449-1012
  • Mfr. Part No. EEAFC1E220
Each (In a Pack of 5)
£0.266
CHEMI-CON 470μF Aluminium Electrolytic Capacitor 35V dc, Through Hole - ELXZ350ELL471MJ20S
  • RS Stock No. 390-120
  • Mfr. Part No. ELXZ350ELL471MJ20S
Each (In a Pack of 5)
£0.096
KEMET R76_125C Polypropylene Film Capacitor, 1 kV dc, 600 V ac, ±5%, 100nF, Through Hole
  • RS Stock No. 192-8712
  • Mfr. Part No. R76QN310050H3J
Each (In a Pack of 10)
£0.774
RS PRO 100μF Aluminium Electrolytic Capacitor 25V dc, Axial, Through Hole
  • RS Stock No. 707-6543
Each (In a Pack of 25)
£0.41
Nichicon 4.7μF Aluminium Electrolytic Capacitor 100V dc, Through Hole - UPS2A4R7MDD
  • RS Stock No. 519-4510
  • Mfr. Part No. UPS2A4R7MDD
Each (In a Pack of 5)
£0.264
RS PRO 100nF Multilayer Ceramic Capacitor MLCC, 50V dc V, 10%
  • RS Stock No. 271-0967
Each (In a Pack of 100)
£0.016
Panasonic 10μF Aluminium Electrolytic Aluminium Electrolytic Capacitor 16V dc, Radial, Through Hole - ECA1CM100
  • RS Stock No. 228-6622
  • Mfr. Part No. ECA1CM100
Each (In a Pack of 5)
£0.158
WIMA MKS2 Polyester Film Capacitor, 40 V ac, 63 V dc, ±10%, 330nF, Through Hole
  • RS Stock No. 108-2413
  • Mfr. Part No. MKS2C033301C00KSSD
Each (In a Pack of 5)
£0.582
Nichicon 22μF Aluminium Electrolytic Capacitor 100V dc, Radial, Through Hole - UPS2A220MPD
  • RS Stock No. 519-4548
  • Mfr. Part No. UPS2A220MPD
Each (In a Pack of 5)
£0.346
Wurth Elektronik Openable Ferrite Sleeve, 41.6 x 33.5 x 28.4mm, For General Application, Apertures: 1, Diameter 8.5
  • RS Stock No. 309-7962
  • Mfr. Part No. 74271221
Each
£4.79
10kΩ, Through Hole Trimmer Potentiometer 0.5W Top Adjust Bourns, 3296
  • RS Stock No. 522-0079
  • Mfr. Part No. 3296Y-1-103LF
Each
£1.94
Panasonic 220μF Aluminium Electrolytic Aluminium Electrolytic Capacitor 35V dc, Radial, Through Hole - EEUFM1V221
  • RS Stock No. 526-1828
  • Mfr. Part No. EEUFM1V221
Each (In a Pack of 5)
£0.44
Nichicon 2200μF Aluminium Electrolytic Capacitor 35V dc, Radial, Through Hole - UVY1V222MHD
  • RS Stock No. 862-4184
  • Mfr. Part No. UVY1V222MHD
Each
£1.23
Panasonic 1000μF Aluminium Electrolytic Capacitor 50V dc, Radial, Through Hole - EEUFM1H102B
  • RS Stock No. 240-3845
  • Mfr. Part No. EEUFM1H102B
Each (In a Pack of 5)
£1.33
Results per page
1
40
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