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

129 of 999+
Murata 47μF Multilayer Ceramic Capacitor MLCC, 10V dc V, ±20% , SMD
  • RS Stock No. 820-2908
  • Mfr. Part No. GRM32ER71A476ME15L
Each (In a Pack of 5)
£0.632
KEMET 4.7μF MnO2 Tantalum Capacitor 16V dc, T491 Series
  • RS Stock No. 538-2341P
  • Mfr. Part No. T491A475K016AT
Each (Supplied on a Reel)
£0.187
VPG Foil Resistors 350Ω Metal Foil Resistor 0.6W ±0.01% Y0007350R000T9L
  • RS Stock No. 763-7202
  • Mfr. Part No. Y0007350R000T9L
Each
£15.55
TE Connectivity 18kΩ Metal Film Resistor 0.6W ±1% LR1F18K
  • RS Stock No. 148-792
  • Mfr. Part No. LR1F18K
Each (In a Pack of 10)
£0.062
EPCOS B32332 Polypropylene Film Capacitor, 450V ac, ±5%, 25μF, Stud Mount
  • RS Stock No. 769-4289
  • Mfr. Part No. B32332I6256J080
Each
£11.03
Vishay 157 10kΩ Rotary Potentiometer 1-Gang Servo Mount, 157S103MB9002
  • RS Stock No. 173-580
  • Mfr. Part No. 157S103MB9002
Each
£60.86
Panasonic 33μF Aluminium Electrolytic Capacitor 63V dc, Radial, Through Hole - EEUFC1J330
  • RS Stock No. 571-072
  • Mfr. Part No. EEUFC1J330
Each (In a Pack of 5)
£0.318
EPCOS B32529 Polyester Film Capacitor, 100V dc, ±5%, 1μF, Through Hole
  • RS Stock No. 896-1411
  • Mfr. Part No. B32529D1105J
Each (In a Pack of 5)
£0.798
KEMET F863 Metallised Polypropylene Film Capacitor, 310V ac, ±10%, 100nF, Through Hole
  • RS Stock No. 144-7753
  • Mfr. Part No. F863BC104K310Z
Each (In a Pack of 20)
£0.203
RS PRO Openable Ferrite Clamp, 23.5 x 36 x 22.5mm, For Computer Peripherals, Digital TV, Internal & External Power
  • RS Stock No. 123-2497
Each (In a Pack of 2)
£3.16
RS PRO, 15Ω 25W Wire Wound Chassis Mount Resistor ±5%
  • RS Stock No. 131-1263
Each (In a Pack of 5)
£2.372
Arcol, 75Ω 10W Wire Wound Chassis Mount Resistor HS10 75R J ±5%
  • RS Stock No. 252-2502
  • Mfr. Part No. HS10 75R J
Each
£3.20
RS PRO 8Ω 1.5W Miniature Speaker 50mm Dia. , 50 (Dia.) x 12.5mm
  • RS Stock No. 756-4605
Each
£3.66
RS PRO Openable Ferrite Clamp, 13 x 25.5 x 11.8mm, For Computer Peripherals, Digital TV, Internal & External Power
  • RS Stock No. 123-2482
Each (In a Pack of 2)
£2.10
Wurth Elektronik 680μF Aluminium Electrolytic Capacitor 10V dc, Radial, Through Hole - 860040274005
  • RS Stock No. 839-8904
  • Mfr. Part No. 860040274005
Each (In a Pack of 10)
£0.359
TE Connectivity CRG Series Thick Film Surface Mount Fixed Resistor 0805 Case 2.2kΩ ±1% 0.125W ±100ppm/°C
  • RS Stock No. 223-0477
  • Mfr. Part No. CRG0805F2K2
Each (In a Pack of 50)
£0.033
RS PRO 2.7Ω, 1206 (3216M) Thick Film SMD Resistor ±1% 0.75W
  • RS Stock No. 183-9575
Each (On a Reel of 5000)
£0.005
KEMET 330nF Multilayer Ceramic Capacitor MLCC 50V dc ±20% Z5U Dielectric, Max. Temp. +85°C
  • RS Stock No. 538-1691
  • Mfr. Part No. C412C334M5U5TA
Each (In a Pack of 5)
£0.24
Eaton, SD32 Surge Protection Device 32 V Maximum Voltage Rating 20kA Maximum Surge Current Surge Protection Device
  • RS Stock No. 144-8697
  • Mfr. Part No. SD32MXX-BCN
Each
£178.06
Vishay 5F Supercapacitor EDLC -20 → +50% Tolerance, 230 EDLC-HV 3V dc, Through Hole
  • RS Stock No. 260-8666
  • Mfr. Part No. MAL223051011E3
Each
£2.24
Results per page
1
129
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