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

155502 Products showing for Passive Components

8 of 999+
RS PRO 22kΩ Carbon Film Resistor 0.25W ±5%
  • RS Stock No. 707-7779
Each (In a Pack of 10)
£0.109
RS PRO 16.8mm Black Potentiometer Knob for 6mm Shaft D Shaped
  • RS Stock No. 777-7369
Each (In a Pack of 5)
£0.738
RS PRO 2.2kΩ Carbon Film Resistor 0.25W ±5%
  • RS Stock No. 707-7690
Each (In a Pack of 10)
£0.145
Vishay 250Ω Metal Film Resistor 0.5W ±0.1% RN65C2500BB14
  • RS Stock No. 850-0696
  • Mfr. Part No. RN65C2500BB14
Each
£2.29
Arcol, 27Ω 50W Wire Wound Chassis Mount Resistor HS50 27R J ±5%
  • RS Stock No. 160-966
  • Mfr. Part No. HS50 27R J
Each
£4.52
Sonitron 91dB Through Hole Continuous Internal Buzzer, 21 x 21 x 9.5mm, 1.5V dc Min, 15V dc Max
  • RS Stock No. 245-6499
  • Mfr. Part No. SMA-21LC-P10
Each
£10.02
RS PRO 220Ω Carbon Film Resistor 0.25W ±5%
  • RS Stock No. 707-7612
Each (In a Pack of 10)
£0.145
RS PRO Polypropylene Film Capacitor, 440V ac, ±10%, 6μF, Screw Mount
  • RS Stock No. 196-4781
Each
£11.11
KEMET PME271 Paper Capacitor, 275V ac, ±20%, 47nF, Through Hole
  • RS Stock No. 210-487
  • Mfr. Part No. PME271M547MR30
Each (In a Pack of 5)
£1.08
RS PRO 1kΩ Rotary Potentiometer 1-Gang Panel Mount
  • RS Stock No. 842-7030
Each
£6.55
RS PRO Openable Ferrite Clamp, 21 Dia. x 39mm, For Computer Peripherals, Digital TV, Internal & External Power Cables,
  • RS Stock No. 123-2486
Each (In a Pack of 2)
£3.245
TE Connectivity 15kΩ Wire Wound Resistor 10W ±5% C1015KJL
  • RS Stock No. 666-1783
  • Mfr. Part No. C1015KJL
Each (In a Pack of 5)
£2.75
KEMET R76_125C Polypropylene Film Capacitor, 1.6 kV dc, 650 V ac, ±5%, 330nF, Through Hole
  • RS Stock No. 192-8725
  • Mfr. Part No. R76TR333050H3J
Each (In a Pack of 2)
£4.10
KEMET 15000μF Aluminium Electrolytic Capacitor 25V dc, Screw Terminal - ALS30A153DA025
  • RS Stock No. 381-8977
  • Mfr. Part No. ALS30A153DA025
Each
£9.56
Panasonic 220μF Aluminium Electrolytic Aluminium Electrolytic Capacitor 63V dc, Radial, Through Hole - EEUFC1J221S
  • RS Stock No. 628-3835
  • Mfr. Part No. EEUFC1J221S
Each (In a Pack of 5)
£0.816
Siretta OSCAR40/5M/LL/SMAM/S/S/33 Whip Multiband Antenna with SMA Male Connector, 5G, 4G, 3G (UMTS), 2G (GSM/GPRS),
  • RS Stock No. 124-8868
  • Mfr. Part No. OSCAR40/5M/LL/SMAM/S/S/33
Each
£46.82
Bourns 3852 10kΩ Rotary Potentiometer 1-Gang Panel Mount, 3852A-282-103AL
  • RS Stock No. 737-7650P
  • Mfr. Part No. 3852A-282-103AL
Each (Supplied in a Bag)
£9.38
Yageo 15Ω Through Hole Fixed Resistor 10W 5% SQP10AJB-15R
  • RS Stock No. 199-1683
  • Mfr. Part No. SQP10AJB-15R
Each (In a Pack of 5)
£0.618
CTi AO100/4PL/SMA_5-0 Whip Multiband Antenna with SMA Connector, 2G (GSM/GPRS), 3G (UTMS), 4G (LTE)
  • RS Stock No. 205-3343
  • Mfr. Part No. AO100/4PL/SMA_5-0
Each
£51.79
Panasonic 1000μF Aluminium Electrolytic Aluminium Electrolytic Capacitor 16V dc, Radial, Through Hole - EEUFM1C102
  • RS Stock No. 526-1266
  • Mfr. Part No. EEUFM1C102
Each (In a Pack of 5)
£0.542
Results per page
1
8
7776

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