Over 800,000 products available

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

169815 Products showing for Passive Components

Sort by
2488 of 999+
In Stock
Wurth Elektronik Ferrite Ring EMI Suppression 15 mm, For: Electromagnetic Interface 8.5 mm ID 12 mm OD
  • RS Stock No. 123-4230
  • Mfr. Part No. 7427006
Subtotal (1 pack of 8 units)
£5.992(exc. VAT)
£0.749/unit
Currently unavailable
Fair-Rite Ferrite Core Round Cable Core 28.6 mm, For: Suppression Components 9.5 mm ID 17.45 mm OD
  • RS Stock No. 172-9992
  • Mfr. Part No. 2631665702
Subtotal (1 box of 376 units)
£242.52(exc. VAT)
£0.645/unit
Temporarily out of stock
Fair-Rite Ferrite Ring Ferrite Ring 9.5 mm, For: Broadband Transformer, Ground Fault Interrupter, Common Mode Filter,
  • RS Stock No. 255-5196
  • Mfr. Part No. 5961001701
Subtotal (1 box of 477 units)
£572.40(exc. VAT)
£1.20/unit
In Stock
TDK Ferrite Ring 11 mm, For: Emc Component, Automotive Electronics, General Electronics 13.5 mm ID 26.6 mm OD
  • RS Stock No. 170-1371
  • Mfr. Part No. B64290L0618X037
Subtotal (1 reel of 500 units)
£370.50(exc. VAT)
£0.741/unit
In Stock
TDK Ferrite Ring 11 mm, For: Emc Component, General Electronics, Automotive Electronics 13.5 mm ID 26.6 mm OD
  • RS Stock No. 170-1373
  • Mfr. Part No. B64290L0618X087
Subtotal (1 reel of 500 units)
£316.00(exc. VAT)
£0.632/unit
In Stock
Fair-Rite Ferrite Ring Ferrite Ring 9.5 mm, For: Pulse, Ground Fault Interrupter, Common Mode Filter, Power Input
  • RS Stock No. 255-5217
  • Mfr. Part No. 5967001701
Subtotal (1 unit)
£2.86(exc. VAT)
£2.86/unit
In Stock
TDK Ferrite Ring 11 mm, For: Emc Component, Automotive Electronics, General Electronics 13.5 mm ID 26.6 mm OD
  • RS Stock No. 170-1372
  • Mfr. Part No. B64290L0618X038
Subtotal (1 reel of 500 units)
£987.50(exc. VAT)
£1.975/unit
Temporarily out of stock
Fair-Rite Ferrite Ring Ferrite Ring 4.9 mm, For: Ground Fault Interrupter, Pulse, Common Mode Filter, Broadband
  • RS Stock No. 255-5208
  • Mfr. Part No. 5967000301
Subtotal (1 box of 3156 units)
£921.552(exc. VAT)
£0.292/unit
Currently unavailable
Fair-Rite Ferrite Core Bead 15.9 mm, For: Suppression Components 2.95 mm ID 6.35 mm OD
  • RS Stock No. 467-2643
  • Mfr. Part No. 2643250302
Subtotal (1 pack of 10 units)
£1.88(exc. VAT)
£0.188/unit
In Stock
Wurth Elektronik Openable Ferrite Sleeve Key 30.3 mm 30.3 mm 39.2 mm, For EMI Suppression
  • RS Stock No. 332-355
  • Mfr. Part No. 74275813S
Subtotal (1 tray of 38 units)
£114.418(exc. VAT)
£3.011/unit
Temporarily out of stock
Fair-Rite Ferrite Ring Toroid Core 6.35 mm 13.2 mm ID 21 mm OD
  • RS Stock No. 467-4267
  • Mfr. Part No. 5961000601
Subtotal (1 pack of 5 units)
£6.75(exc. VAT)
£1.35/unit
Temporarily out of stock
Fair-Rite Openable, Diameter 10.15 mm Ferrite Core, Apertures: 1 11 mm 32.2 mm 22.1 mm, For EMI Suppression
  • RS Stock No. 173-0002
  • Mfr. Part No. 0443167251
Subtotal (1 box of 196 units)
£268.52(exc. VAT)
£1.37/unit
Temporarily out of stock
Fair-Rite Ferrite Ring Ferrite Ring 6.35 mm, For: Broadband Transformer, Power Input Filter, Pulse, Common Mode Filter,
  • RS Stock No. 255-5238
  • Mfr. Part No. 5977000601
Subtotal (1 box of 913 units)
£286.682(exc. VAT)
£0.314/unit
In Stock
TDK, Diameter 3.4 mm Ferrite Sleeve, Apertures: 2 8.5 mm 8.3 mm 14.5 mm, For Broadband Transformer
  • RS Stock No. 212-0594
  • Mfr. Part No. B62152A0004X001
Subtotal (1 pack of 5 units)
£13.25(exc. VAT)
£2.65/unit
In Stock
Wurth Elektronik Openable Ferrite Sleeve Key 18.4 mm 19 mm 30.3 mm, For EMI Suppression
  • RS Stock No. 332-352
  • Mfr. Part No. 74275812S
Subtotal (1 tray of 56 units)
£146.048(exc. VAT)
£2.608/unit
In Stock
Wurth Elektronik Ferrite Ring Toroid Core 7.5 mm, For: EMI Suppression 25.4 mm ID 7.5 mm OD
  • RS Stock No. 788-0169
  • Mfr. Part No. 742701112
Subtotal (1 unit)
£1.49(exc. VAT)
£1.49/unit
In Stock
Wurth Elektronik Openable, Diameter 27 mm Ferrite Ring, Apertures: 1 20 mm 44 mm 55 mm, For General Application, Safety
  • RS Stock No. 163-5436
  • Mfr. Part No. 7427155S
Subtotal (1 box of 30 units)
£157.80(exc. VAT)
£5.26/unit
In Stock
Fair-Rite, Diameter 3.8 mm Ferrite Sleeve
  • RS Stock No. 255-5105
  • Mfr. Part No. 2843006802
Subtotal (1 unit)
£1.24(exc. VAT)
£1.24/unit
In Stock
Wurth Elektronik Openable Ferrite Clamp Key, For Round Cable, EMI Suppression
  • RS Stock No. 697-735
  • Mfr. Part No. 74272140
Subtotal (1 bag of 2 units)
£4.34(exc. VAT)
£2.17/unit
Temporarily out of stock
KEMET Openable, Diameter 7 mm Ferrite Ring, Apertures: 1 37.4 mm 20.3 mm 19.6 mm, For Consumer Electronics
  • RS Stock No. 169-6791
  • Mfr. Part No. ESD-SR-150
Subtotal (1 box of 400 units)
£560.00(exc. VAT)
£1.40/unit
1
2488
8491
Results per page

Guides & Articles

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
Resistors Guide
What are the different types of resistors? Learn more in our comprehensive guide.
Read more
Potentiometers Guide
Our potentiometers guide will help you understand their uses, how they work, the various types and characteristics.
Read more
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