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

154518 Products showing for Passive Components

571 of 999+
Wurth Elektronik 100μF Aluminium Electrolytic Capacitor 50V dc, Radial, Through Hole - 860080674009
  • RS Stock No. 840-0253
  • Mfr. Part No. 860080674009
Each (In a Bag of 10)
£0.289(exc. VAT)
Panasonic ERA 1.91kΩ, 0603 (1608M) Metal Film SMD Resistor ±0.1% 0.1W
  • RS Stock No. 110-1093
  • Mfr. Part No. ERA3AEB1911V
Each (On a Reel of 5000)
£0.029(exc. VAT)
KEMET 330μF Surface Mount Polymer Capacitor, 2.5V dc
  • RS Stock No. 161-0906
  • Mfr. Part No. T591D337M2R5ATE015
Each (On a Reel of 500)
£0.771(exc. VAT)
EPCOS B33331V Polypropylene Capacitor PP, 460V dc, ± 5%, 14μF, Screw Mount
  • RS Stock No. 200-9279
  • Mfr. Part No. B33331V7146J080
Each
£7.74(exc. VAT)
Yageo 20Ω, 0603 (1608M) Thick Film Resistor ±5% 0.1W
  • RS Stock No. 197-8125
  • Mfr. Part No. AC0603JR-0720RL
Each (On a Reel of 5000)
£0.003(exc. VAT)
Yageo 4.7kΩ, 1206 (3216M) Thick Film Surface Mount Resistor Array ±5% 62.5mW
  • RS Stock No. 242-7235
  • Mfr. Part No. TC164-JR-074K7L
Each (On a Tape of 100)
£0.037(exc. VAT)
1kΩ, Through Hole Trimmer Potentiometer 0.5W Top Adjust Bourns, 3386F
  • RS Stock No. 233-0734
  • Mfr. Part No. 3386F-1-102TLF
Each (In a Tube of 100)
£1.246(exc. VAT)
TE Connectivity, 4.7Ω 500W Wire Wound Power Resistor CJP500J4R7J 5%
  • RS Stock No. 261-2435
  • Mfr. Part No. CJP500J4R7J
Each
£46.69(exc. VAT)
Nidec Components 5V dc 25 Pulse Optical Encoder with a 6 mm
  • RS Stock No. 244-4114
  • Mfr. Part No. REC16B25-201-C
Each (In a Tray of 5)
£11.88(exc. VAT)
Wurth Power Inductor
  • RS Stock No. 484-684
  • Mfr. Part No. 744777924
Each
£1.65(exc. VAT)
Variohm Group 640 Pulse Incremental Mechanical Rotary Encoder Round Shaft, Screw Mount
  • RS Stock No. 315-132
  • Mfr. Part No. H40640000005ANUFBX
Each
£38.31(exc. VAT)
Vishay P11S 1kΩ Rotary Potentiometer 1-Gang Panel Mount, P11S1V0FLSY00102KL
  • RS Stock No. 790-4369P
  • Mfr. Part No. P11S1V0FLSY00102KL
Each (Supplied in a Box)
£16.98(exc. VAT)
Nichicon 33μF Surface Mount Polymer Capacitor, 63V dc
  • RS Stock No. 187-2186
  • Mfr. Part No. GYB1J330MCQ1GS
Each (On a Reel of 500)
£0.41(exc. VAT)
RS PRO 10% 150W Adjustable Wire Wound Resistor 50ppm/°C 15.2mm
  • RS Stock No. 227-4839
Each
£41.53(exc. VAT)
Vishay CRCW 24.9Ω, 1206 (3216M) Thick Film SMD Resistor ±1% 0.25W
  • RS Stock No. 679-1945
  • Mfr. Part No. CRCW120624R9FKEA
Each (In a Pack of 50)
£0.042(exc. VAT)
Nichicon 1500μF Aluminium Electrolytic Capacitor 100V dc, Snap-In - LLS2A152MELA
  • RS Stock No. 846-7127
  • Mfr. Part No. LLS2A152MELA
Each (In a Pack of 2)
£3.12(exc. VAT)
Arcol, 2.7Ω 50W Wire Wound Chassis Mount Resistor HS50 2R7 J ±5%
  • RS Stock No. 107-4119
  • Mfr. Part No. HS50 2R7 J
Each
£5.44(exc. VAT)
Vishay CRCW 1kΩ, 0603 (1608M) Thick Film SMD Resistor ±1% 0.1W
  • RS Stock No. 678-9875
  • Mfr. Part No. CRCW06031K00FKEA
Each (In a Pack of 50)
£0.027(exc. VAT)
KYOCERA AVX 100nF MLCC, 50V dc V, SMD
  • RS Stock No. 135-9033
  • Mfr. Part No. 08055C104K4T2A
Each (In a Bag of 100)
£0.074(exc. VAT)
TDK Openable Ferrite Clamp, 16.5 Dia. x 30mm, For Audio Equipment, Copiers, Digital Telephones, Electronic Musical
  • RS Stock No. 170-3327
  • Mfr. Part No. ZCAT1730-0730A-BK
Each (In a Box of 840)
£0.791(exc. VAT)
Results per page
1
571
7726

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