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

154991 Products showing for Passive Components

126 of 999+
Arcol 5kΩ Thick Film Resistor 25W ±1% AP826 5K F 50PPM
  • RS Stock No. 821-1801
  • Mfr. Part No. AP826 5K F 50PPM
Each
£5.17
Wurth, WE-MK, 0603 (1608M) Multilayer Surface Mount Inductor with a Ceramic Core, 68 nH Multilayer 300mA Idc Q:12
  • RS Stock No. 883-0519
  • Mfr. Part No. 744786168A
Each (In a Bag of 25)
£0.175
RS PRO 27kΩ, 0805 (2012M) Thick Film SMD Resistor ±1% 0.125W
  • RS Stock No. 804-6556
Each (On a Reel of 5000)
£0.004
Siretta MIKE1A/2.5M/SMAM/S/S/20 Stubby Multiband Antenna with SMA Connector, 2G (GSM/GPRS), 3G (UTMS), 4G, 4G (LTE
  • RS Stock No. 124-8873
  • Mfr. Part No. MIKE1A/2.5M/SMAM/S/S/20
Each
£14.87
Vishay 149 1kΩ Rotary Potentiometer 2-Gang, Panel Mount (Through Hole), 14921F0GJSX13102KA
  • RS Stock No. 484-9203
  • Mfr. Part No. 14921F0GJSX13102KA
Each
£25.86
Nichicon 470μF Aluminium Electrolytic Capacitor 450V dc, Snap-In - LGL2W471MELB45
  • RS Stock No. 846-6893P
  • Mfr. Part No. LGL2W471MELB45
Each (Supplied in a Box)
£11.42
RS PRO 2kΩ Metal Film Resistor 0.6W ±0.5%
  • RS Stock No. 174-2742
Each (In a Pack of 100)
£0.052
1kΩ, Through Hole Trimmer Potentiometer 0.5W Top Adjust Bourns, 3296
  • RS Stock No. 521-9631
  • Mfr. Part No. 3296W-1-102LF
Each
£1.67
Better World
Schneider Electric Potentiometer Mounting Kit, ZB4BD922
  • RS Stock No. 609-2207
  • Mfr. Part No. ZB4BD922
Each
£25.39
EPCOS 12000μF Aluminium Electrolytic Capacitor 63V dc, Snap-In - B41231A8129M060
  • RS Stock No. 171-3251
  • Mfr. Part No. B41231A8129M060
Each
£6.42
KEMET LDE Polyethylene Naphthalate Film Capacitor, 40 V ac, 63V dc, ±10%, 1.5μF, Surface Mount
  • RS Stock No. 164-9894
  • Mfr. Part No. LDEDE4150KA0N00
Each (In a Pack of 2)
£2.07
Schaffner, FN2090 30A 250 V ac/dc 0 → 400Hz, Chassis Mount EMI Filter, Stud, Single Phase
  • RS Stock No. 754-6061
  • Mfr. Part No. FN2090-30-08
Each
£58.66
Arcol, 100Ω 50W Wire Wound Chassis Mount Resistor HS50 100R J ±5%
  • RS Stock No. 158-367
  • Mfr. Part No. HS50 100R J
Each
£4.45
RS PRO 19.4mm Black Potentiometer Knob for 6.35mm Shaft Round Shaft
  • RS Stock No. 465-9397
Each (In a Pack of 10)
£1.142
Teltonika PR1KCL25 Puck Omnidirectional Antenna with SMA Connector, LTE
  • RS Stock No. 428-069
  • Mfr. Part No. PR1KCL25
Each
£10.39
RS PRO Single Layer Ceramic Capacitor (SLCC) 100nF 50V dc ±10% X7R Dielectric, Through Hole +125°C Max Op. Temp.
  • RS Stock No. 180-5103
Each (In a Pack of 125)
£0.085
ERJUP Resistor Thick Film 0603 1% 1M
  • RS Stock No. 243-2104
  • Mfr. Part No. ERJUP3F1004V
Each (On a Tape of 100)
£0.042
Taiyo Yuden 47μF Multilayer Ceramic Capacitor MLCC, 10V dc V, ±10% , SMD
  • RS Stock No. 103-4216
  • Mfr. Part No. LMK325B7476KM-PR
Each (In a Pack of 20)
£0.423
Panasonic 270Ω, 0805 (2012M) Thick Film SMD Resistor ±1% 0.5W
  • RS Stock No. 228-5018
  • Mfr. Part No. ERJHP6F2700V
Each (On a Tape of 100)
£0.055
TDK Ceramic Single Layer Capacitor 150pF 2kV dc ±5%, CC45 series, Through Hole
  • RS Stock No. 262-1919
  • Mfr. Part No. CC45SL3DD151JYNNA
Each (In a Bag of 10)
£0.184
Results per page
1
126
7750

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