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

154486 Products showing for Passive Components

6481 of 999+
D11/CRCW0603 100 9R1 1% ET1 E3
  • RS Stock No. 607-682
  • Mfr. Part No. CRCW06039R10FKEA
Each
£0.04
KEMET 100pF Multilayer Ceramic Capacitor MLCC, 25V dc V, ±1% , SMD
  • RS Stock No. 146-4379P
  • Mfr. Part No. CBR04C101F3GAC
Each (Supplied on a Reel)
£0.214
Murata Thermistor, 4.7kΩ Resistance, NTC Type, 0603 (1608M), 1.6 x 0.8 x 0.8mm
  • RS Stock No. 169-2651
  • Mfr. Part No. NCP18XW472J03RB
Each (On a Reel of 4000)
£0.068
TE Connectivity 48.7kΩ Metal Film Resistor 0.25W ±0.1% YR1B48K7CC
  • RS Stock No. 161-6176
  • Mfr. Part No. YR1B48K7CC
Each (In a Box of 1000)
£0.194
Panasonic 270μF Through Hole Polymer Capacitor, 16V dc
  • RS Stock No. 100-0060
  • Mfr. Part No. 16SEPC270M
Each (In a Bag of 200)
£0.526
Welwyn 680mΩ Wire Wound Resistor 7W ±5% W22-R68JI
  • RS Stock No. 144-2999
  • Mfr. Part No. W22-R68JI
Each (In a Bag of 5)
£1.648
EPCOS 39 mH ±30% Ferrite Power Inductor, 400mA Idc, 2Ω Rdc, B82721A
  • RS Stock No. 171-1177
  • Mfr. Part No. B82721K2401N020
Each (In a Tray of 720)
£0.944
TE Connectivity 2118310-1 Square Omnidirectional GSM Antenna with SMT Connector, 4G (LTE)
  • RS Stock No. 215-3167P
  • Mfr. Part No. 2118310-1
Each (Supplied in a Bag)
£1.796
TDK Openable Ferrite Sleeve, 20 Dia. x 25mm, For Suppression Components, Apertures: 1, Diameter 5mm
  • RS Stock No. 109-4162
  • Mfr. Part No. ZCAT1325-0530A
Each (On a Reel of 1344)
£0.435
Panasonic 82μF Surface Mount Aluminium Polymer Capacitor, 80V
  • RS Stock No. 433-960
  • Mfr. Part No. 80SXV82M
Each (In a Pack of 5)
£2.54
KEMET 100pF Multilayer Ceramic Capacitor MLCC, 50V dc V, ±5% , SMD
  • RS Stock No. 264-4056
  • Mfr. Part No. C1206C101J5GACTU
Each (In a Pack of 25)
£0.068
Vishay CRCW 499Ω, 1206 (3216M) Thick Film SMD Resistor ±1% 0.25W
  • RS Stock No. 169-4920
  • Mfr. Part No. CRCW1206499RFKEA
Each (On a Reel of 5000)
£0.014
RS PRO 20A 115/250 V ac 50 → 60Hz, Chassis Mount Power Line Filter, Fast-On, Single Phase
  • RS Stock No. 286-7277
Each
£26.03
Bourns, G0603MLC-05E Varistor 0.2pF, Clamping 30V, Varistor 5V, 0603 (1608M)
  • RS Stock No. 181-4389
  • Mfr. Part No. CG0603MLC-05E
Each (On a Reel of 5000)
£0.072
Masach Tech Tin Plated Steel Shielding Cage Seamless Cover, 55.4 x 41.4 x 4mm
  • RS Stock No. 234-8651
  • Mfr. Part No. MS548-10C
Each (In a Tray of 16)
£1.116
TDK 10μF Multilayer Ceramic Capacitor MLCC, 10V dc V, ±20% , SMD
  • RS Stock No. 111-0356
  • Mfr. Part No. C1608X5R1A106M080AC
Each (On a Reel of 4000)
£0.078
Vishay CRCW 392Ω, 0402 (1005M) Thick Film SMD Resistor ±1% 0.063W
  • RS Stock No. 678-9235
  • Mfr. Part No. CRCW0402392RFKED
Each (In a Pack of 50)
£0.02
Murata, LQH55DN_03, 2220 (5750M) Unshielded Wire-wound SMD Inductor with a Ferrite Core, 10 mH ±20% Wire-Wound 50mA Idc
  • RS Stock No. 725-5288P
  • Mfr. Part No. LQH55DN103M03L
Each (Supplied on a Reel)
£1.36
KEMET 4.7μF MnO2 Tantalum Capacitor 35V dc, T491 Series
  • RS Stock No. 172-6601
  • Mfr. Part No. T491C475K035AT
Each (On a Reel of 500)
£0.267
Murata 3pF MLCC, 50V dc V, ±0.1pF , SMD
  • RS Stock No. 185-1754
  • Mfr. Part No. GRM0335C1H3R0BA01D
Each (On a Reel of 1000)
£0.004
Results per page
1
6481
7725

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