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

155496 Products showing for Passive Components

936 of 999+
WIMA MKS4 Polyester Film Capacitor, 200 V ac, 400 V dc, ±10%, 100nF, Through Hole
  • RS Stock No. 116-644
  • Mfr. Part No. MKS4G031003F00KI00
Each (In a Pack of 5)
£0.572
Rubycon 150μF Aluminium Electrolytic Capacitor 25V dc, Radial, Through Hole - 25ZLJ150M6.3X11
  • RS Stock No. 172-6169
  • Mfr. Part No. 25ZLJ150M6.3X11
Each (In a Box of 2000)
£0.064
EPCOS B82477-G4 Series Shielded Wire-wound SMD Inductor with a Ferrite Core, 33 μH ±20% Wire-Wound 3A Idc
  • RS Stock No. 496-1959
  • Mfr. Part No. B82477G4333M000
Each
£0.95
Vishay 4700μF Aluminium Electrolytic Capacitor 40V dc, Snap-In - MAL205857472E3
  • RS Stock No. 166-8017
  • Mfr. Part No. MAL205857472E3
Each
£7.91
Murata 1pF Multilayer Ceramic Capacitor MLCC, 50V dc V, ±0.05pF , SMD
  • RS Stock No. 815-1557
  • Mfr. Part No. GJM1555C1H1R0WB01D
Each (In a Pack of 50)
£0.022
KYOCERA AVX 10μF Electrolytic Tantalum Capacitor 6.3V dc, TAJ Series
  • RS Stock No. 136-0111
  • Mfr. Part No. TAJA106K006RNJ
Each (In a Bag of 50)
£0.136
Rubycon 470μF Aluminium Electrolytic Capacitor 35V dc, Radial, Through Hole - 35PK470MEFC10X12.5
  • RS Stock No. 172-6219
  • Mfr. Part No. 35PK470MEFC10X12.5
Each (In a Box of 1000)
£0.121
50Ω STMicroelectronics Surface Mount Balun Transformer
  • RS Stock No. 791-9093
  • Mfr. Part No. BAL-NRF01D3
Each (In a Pack of 100)
£0.154
Inductor/SMD 0.5mH 2A -30/+50%
  • RS Stock No. 577-215
  • Mfr. Part No. DKFS-6248-02D5
Each
£2.34
Arcol 20mΩ Metal Film Fixed Resistor 5W ±1% MSR-5 R02 F
  • RS Stock No. 487-9197
  • Mfr. Part No. MSR-5 R02 F
Each (In a Pack of 5)
£2.732
RS PRO 3300μF Aluminium Electrolytic Capacitor 16V dc, Radial, Through Hole
  • RS Stock No. 711-1028P
Each (Supplied in a Bag)
£0.745
RS PRO 1MΩ Metal Film Resistor 0.4W ±0.25%
  • RS Stock No. 174-2748
Each (In a Pack of 100)
£0.086
KEMET 3.3 mH 10% Coil Inductor, 280mA Idc
  • RS Stock No. 265-2486
  • Mfr. Part No. SBC6-332-281
Each
£1.42
Bourns 10 mH ±10% Ferrite Leaded Inductor, Max SRF:530kHz, Q:80, 100mA Idc, 12Ω Rdc, RLB
  • RS Stock No. 811-8819
  • Mfr. Part No. RLB1314-103KL
Each (In a Bag of 10)
£0.324
TE Connectivity SM 47Ω, 5329 (13573M) Wire Wound SMD Resistor ±5% 5W
  • RS Stock No. 664-1632
  • Mfr. Part No. SMW547RJT
Each (In a Pack of 5)
£0.486
Vishay 22nF Multilayer Ceramic Capacitor MLCC, 50V dc V, ±10% , SMD
  • RS Stock No. 272-7906
  • Mfr. Part No. VJ0603Y223KXACW1BC
Each (On a Tape of 200)
£0.021
Grayhill 5V dc Optical Encoder with a 6.32 mm Flat Shaft, Panel Mount, Center Ribbon Cable with Connector
  • RS Stock No. 878-0470
  • Mfr. Part No. 62S11-M5-020C
Each
£38.92
WIMA MKS4 Polyester Film Capacitor, 40 V ac, 63 V dc, ±10%, 470nF, Through Hole
  • RS Stock No. 108-2788
  • Mfr. Part No. MKS4C034703C00KSSD
Each (In a Pack of 5)
£0.658
Wurth Elektronik Ferrite, Rubber Shielding Sheet, 330mm x 210mm x 1mm
  • RS Stock No. 736-2144
  • Mfr. Part No. 30410S
Each
£88.11
Nichicon 1000μF Polymer Capacitor 6.3V dc, Through Hole - RL80J102MDN1KX
  • RS Stock No. 851-3841
  • Mfr. Part No. RL80J102MDN1KX
Each
£0.67
Results per page
1
936
7775

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