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

155293 Products showing for Passive Components

6627 of 999+
Wurth, 5040 Power Inductor 68 μH 970mA Idc
  • RS Stock No. 259-1096
  • Mfr. Part No. 78404054680
Each
£1.17
EPCOS B3293 Metallised Polyester Film Capacitor, 305V ac, ±10%, 68nF, Through Hole
  • RS Stock No. 172-5636
  • Mfr. Part No. B32932A3683K000
Each (In a Bag of 1000)
£0.235
KYOCERA AVX 22μF Electrolytic Tantalum Capacitor 6.3V dc, TPS Series
  • RS Stock No. 136-1526
  • Mfr. Part No. TPSA226K006R0900
Each (On a Reel of 2000)
£0.095
KEMET C44U Polypropylene Film Capacitor, 1300V dc, 10%, 950μF, Screw Mount
  • RS Stock No. 196-8823
  • Mfr. Part No. C44UUGT6950M54K
Each (In a Bag of 4)
£85.09
Yageo 4.7kΩ, 0805 Thick Film Resistor ±5% 0.125W
  • RS Stock No. 197-8240P
  • Mfr. Part No. AC0805JR-074K7L
Each (Supplied on a Reel)
£0.008
Wurth, WE-PD Shielded Wire-wound SMD Inductor 15 μH ±20% Wire-Wound 1.6A Idc
  • RS Stock No. 789-7123
  • Mfr. Part No. 7447779115
Each
£1.93
Yageo 33nF MLCC, 25V dc V, ±10% , SMD
  • RS Stock No. 198-5267P
  • Mfr. Part No. AC0402KRX7R8BB333
Each (Supplied on a Reel)
£0.014
ROHM 100mΩ, 7142(2817) Metal Plate Resistor ±1% 10W
  • RS Stock No. 237-4342
  • Mfr. Part No. GMR320HJCFAR100
Each (On a Reel of 2000)
£0.882
Wurth Elektronik MLCC
  • RS Stock No. 181-3454
  • Mfr. Part No. 885012107011
Each (On a Reel of 3000)
£0.356
Wurth, WE-SPC, 4838 Shielded Wire-wound SMD Inductor with a Ferrite Core, 22 μH ±20% Wire-Wound 1.1A Idc
  • RS Stock No. 749-8426P
  • Mfr. Part No. 74408943220
Each (Supplied as a Tape)
£1.21
Wurth, WE-MI, 0805 (2012M) Unshielded Multilayer Surface Mount Inductor with a Ferrite Core, 470 nH ±10% Multilayer
  • RS Stock No. 163-3376
  • Mfr. Part No. 74479032
Each (On a Reel of 4000)
£0.316
Wurth Elektronik 100μF Surface Mount Aluminium Polymer Capacitor, 80V dc
  • RS Stock No. 275-9329P
  • Mfr. Part No. 865081762009
Each (Supplied on a Reel)
£1.55
Wurth, WE-LQS, 4018 Shielded Wire-wound SMD Inductor 47 μH ±20% Semi-Shielded 600mA Idc
  • RS Stock No. 163-4788
  • Mfr. Part No. 74404042470
Each (On a Reel of 3000)
£0.414
EPCOS B32529 Polyester Film Capacitor, 200 V ac, 400 V dc, ±10%, 1nF, Through Hole
  • RS Stock No. 194-3478
  • Mfr. Part No. B32529C6102K000
Each (In a Box of 2000)
£0.069
100Ω, SMD Trimmer Potentiometer 0.25W Side Adjust Vishay, TSM4
  • RS Stock No. 162-2399
  • Mfr. Part No. TSM4YJ101KB25
Each (In a Box of 50)
£8.823
Amphenol Advanced Sensors Thermistor
  • RS Stock No. 210-4323
  • Mfr. Part No. CL-40
Each (In a Pack of 10)
£1.14
KEMET 10μF Multilayer Ceramic Capacitor MLCC, 25V dc V, ±10% , SMD
  • RS Stock No. 146-6225
  • Mfr. Part No. C0805C106K3PACTU
Each (On a Reel of 2500)
£0.063
Wurth Elektronik Wireless Charging Coil Transmitter 7.5A, 6.3 μH
  • RS Stock No. 217-7649
  • Mfr. Part No. 760308101411
Each
£10.67
KEMET R76_125C Polypropylene Film Capacitor, 1.6 kV dc, 650 V ac, ±5%, 82nF, Through Hole
  • RS Stock No. 192-8655
  • Mfr. Part No. R76TN282050H4J
Each (In a Bag of 300)
£0.494
AVX 22nF MLCC, 50V dc V, SMD
  • RS Stock No. 135-3242
  • Mfr. Part No. 08055C223KAT2A
Each (On a Reel of 4000)
£0.018
Results per page
1
6627
7765

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