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

155158 Products showing for Passive Components

6468 of 999+
KEMET R76_125C Polypropylene Film Capacitor, 2 kV dc, 700 V ac, ±5%, 2.7nF, Through Hole
  • RS Stock No. 192-8699P
  • Mfr. Part No. R76UI127050H4J
Each (Supplied in a Bag)
£0.316
KEMET 5.6pF Multilayer Ceramic Capacitor MLCC, 50V dc V, ±0.25pF , SMD
  • RS Stock No. 147-364
  • Mfr. Part No. C0603C569C5GACTU
Each (In a Pack of 50)
£0.022
Nichicon 470μF Aluminium Electrolytic Capacitor 16V dc, Radial, Through Hole - UBT1C471MPD8
  • RS Stock No. 167-1163
  • Mfr. Part No. UBT1C471MPD8
Each (In a Box of 200)
£0.359
Wurth Elektronik Ferrite Ring Toroid Core, For: EMI Suppression, 28 x 16 x 13mm
  • RS Stock No. 788-0193P
  • Mfr. Part No. 7427013
Each (Supplied in a Box)
£1.14
EPCOS Thermistor, 45Ω Resistance, PTC Type, 9 x 5 x 12.5mm
  • RS Stock No. 191-1850P
  • Mfr. Part No. B59873C0120A070
Each (Supplied in a Bag)
£0.89
Bourns, SRN5040 Shielded Wire-wound SMD Inductor with a Ferrite Core, 27 μH ±20% Wire-Wound 1.3A Idc
  • RS Stock No. 813-5696
  • Mfr. Part No. SRN5040-270M
Each (In a Bag of 10)
£0.189
TE Connectivity CRGP 5.6kΩ, 1206 (3216M) Thick Film SMD Resistor ±1% 0.5W
  • RS Stock No. 176-5373
  • Mfr. Part No. CRGP1206F5K6
Each (On a Reel of 500)
£0.053
RS PRO 200Ω, 1206 (3216M) Thick Film SMD Resistor ±1% 0.25W
  • RS Stock No. 802-9563
Each (On a Reel of 5000)
£0.006
Murata, LQW18F, 0603 (1608M) Multilayer Surface Mount Inductor with a Ferrite Core, 47 nH ±2% Multilayer 100mA Idc Q:17
  • RS Stock No. 785-9225
  • Mfr. Part No. LQP18MN47NG02D
Each (In a Bag of 10)
£0.198
TE Connectivity RN73 750Ω, 0805 (2012M) Thin Film SMD Resistor ±0.1% 0.1W
  • RS Stock No. 163-8916
  • Mfr. Part No. RN73C2A750RB
Each (On a Reel of 1000)
£0.30
TE Connectivity 3502 430kΩ, 2010 (5025M) Thick Film SMD Resistor ±1% 2W
  • RS Stock No. 186-5982
  • Mfr. Part No. 3502430KFT
Each (On a Reel of 2000)
£0.125
TE Connectivity RQ73 105kΩ, 0603 (1608M) Thin Film SMD Resistor ±0.1% 0.15W
  • RS Stock No. 187-2758
  • Mfr. Part No. RQ73C1J105KBTD
Each (On a Reel of 250)
£0.282
TE Connectivity 3502 12Ω, 2010 (5025M) Thick Film SMD Resistor ±1% 2W
  • RS Stock No. 186-5787
  • Mfr. Part No. 350212RFT
Each (On a Reel of 2000)
£0.183
ROHM MCR 200Ω, 0603 (1608M) Thick Film SMD Resistor ±1% 0.1W
  • RS Stock No. 901-3538
  • Mfr. Part No. MCR03EZPFX2000
Each (In a Bag of 100)
£0.004
Panasonic ERA 27.4kΩ, 0603 (1608M) Metal Film SMD Resistor ±0.1% 0.1W
  • RS Stock No. 708-8855P
  • Mfr. Part No. ERA3AEB2742V
Each (Supplied on a Reel)
£0.11
KYOCERA AVX 150μF Electrolytic Tantalum Capacitor 10V dc, TPS Series
  • RS Stock No. 135-9906P
  • Mfr. Part No. TPSD157K010R0100
Each (Supplied on a Reel)
£0.912
TE Connectivity 3550 10kΩ, 4320 Thick Film SMD Resistor ±5% 5W
  • RS Stock No. 186-6447
  • Mfr. Part No. 355010KJT
Each (On a Tape of 10)
£0.939
TE Connectivity 3502 120Ω, 2010 (5025M) Thick Film SMD Resistor ±1% 2W
  • RS Stock No. 186-6587
  • Mfr. Part No. 3502120RFT
Each (On a Tape of 10)
£0.328
TE Connectivity 3550 100kΩ, 4320 Thick Film SMD Resistor ±5% 5W
  • RS Stock No. 186-5598
  • Mfr. Part No. 3550100KJT
Each (On a Reel of 1000)
£0.418
TE Connectivity RL73 270mΩ, 2512 (6432M) Thick Film SMD Resistor ±5% 1W
  • RS Stock No. 125-1121
  • Mfr. Part No. RL73K3AR27JTDF
Each (In a Bag of 20)
£0.571
Results per page
1
6468
7758

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