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

110 of 999+
RS PRO 22μF Aluminium Electrolytic Capacitor 25V dc, Axial, Through Hole
  • RS Stock No. 707-6423
Each (In a Pack of 25)
£0.302
Panasonic 68μF Surface Mount Polymer Capacitor, 25V dc
  • RS Stock No. 131-1955
  • Mfr. Part No. EEHZK1E680P
Each (In a Pack of 5)
£0.84
TE Connectivity CRG 120Ω, 0603 (1608M) Thick Film SMD Resistor ±1% 0.1W
  • RS Stock No. 213-2159
  • Mfr. Part No. CRG0603F120R
Each (In a Pack of 50)
£0.013
TE Connectivity CRG 0Ω, 0603 (1608M) Thick Film SMD Resistor ±0% 0.1W
  • RS Stock No. 134-5428
  • Mfr. Part No. CRG0603ZR
Each (On a Reel of 5000)
£0.002
CSTCR5M00G53-R0, Ceramic Resonator, 5MHz 15pF, 3-Pin SMD, 4.5 x 2.0 x 1.15mm
  • RS Stock No. 276-3673
  • Mfr. Part No. CSTCR5M00G53-R0
Each (On a Tape of 10)
£0.266
KEMET 4.7nF Multilayer Ceramic Capacitor MLCC, 2kV dc V, ±10% , Through Hole
  • RS Stock No. 906-0705
  • Mfr. Part No. C331C472KGR5TA
Each (In a Pack of 2)
£1.735
RS PRO 32mm Silver Potentiometer Knob for 6.4mm Shaft Splined
  • RS Stock No. 499-955
Each
£5.50
Rubycon 330μF Aluminium Electrolytic Capacitor 100V dc, Radial, Through Hole - 100YXJ330M16X25
  • RS Stock No. 749-7246
  • Mfr. Part No. 100YXJ330M16X25
Each (In a Pack of 2)
£1.68
Vishay 220kΩ Metal Film Resistor 3W ±5% PR03000202203JAC00
  • RS Stock No. 683-5934
  • Mfr. Part No. PR03000202203JAC00
Each (In a Pack of 10)
£0.302
TE Connectivity 5.1kΩ Metal Film Resistor 0.6W ±1% LR1F5K1
  • RS Stock No. 148-253
  • Mfr. Part No. LR1F5K1
Each (In a Pack of 10)
£0.05
CHEMI-CON 2700μF Aluminium Electrolytic Capacitor 50V dc, Radial, Through Hole - ELXZ500ELL272MM40S
  • RS Stock No. 756-7910
  • Mfr. Part No. ELXZ500ELL272MM40S
Each (In a Pack of 2)
£3.35
Werma 60dB Screw Mount Buzzer Buzzer, 12V ac/dc Min, 24V Max
  • RS Stock No. 224-0667
  • Mfr. Part No. 107.010.70
Each
£38.71
Yageo 39kΩ Metal Film Fixed Resistor 0.25W ±1% MFR-25FTE52-39K
  • RS Stock No. 199-7616P
  • Mfr. Part No. MFR-25FTE52-39K
Each (Supplied in a Box)
£0.016
RS PRO 32mm Cream Potentiometer Knob for 6.35mm Shaft
  • RS Stock No. 467-2407
Each (In a Pack of 5)
£1.058
Panasonic 4700μF Aluminium Electrolytic Aluminium Electrolytic Capacitor 25V dc, Radial, Through Hole - EEUFC1E472
  • RS Stock No. 315-0669
  • Mfr. Part No. EEUFC1E472
Each (In a Pack of 5)
£2.08
RS PRO 10A 250 V ac, Chassis Mount RFI Filter, Tab
  • RS Stock No. 386-4245
Each
£31.35
RS PRO 5kΩ Rotary Potentiometer 10-Turns 1-Gang Bushing Mount
  • RS Stock No. 278-0319
Each
£19.60
Vishay 1000μF Aluminium Electrolytic Capacitor 40V dc, Axial, Through Hole - MAL213817102E3
  • RS Stock No. 850-5935
  • Mfr. Part No. MAL213817102E3
Each
£3.92
Ducati Energia 4.16.10 Polypropylene Film Capacitor, 450V ac, ±5%, 8μF, Stud Mount
  • RS Stock No. 388-7967
  • Mfr. Part No. 4.16.10.13.64
Each
£6.44
Wurth Elektronik Openable Ferrite Sleeve, 36.3 x 24.2 x 19.7mm, For EMI Suppression, Apertures: 1, Diameter 8.5mm
  • RS Stock No. 367-5304
  • Mfr. Part No. 74271132
Each
£4.66
Results per page
1
110
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