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

155331 Products showing for Passive Components

7697 of 999+
TE Connectivity Holsworthy RT73 549Ω, 0603 (1608M) Thick Film SMD Resistor 0.1% 0.2W
  • RS Stock No. 619-465
  • Mfr. Part No. RT73F1J549RBTD
Each (On a Reel of 5000)
£0.057
TE Connectivity 3502 160Ω, 2010 (5025M) Thick Film SMD Resistor ±1% 2W
  • RS Stock No. 186-5837
  • Mfr. Part No. 3502160RFT
Each (On a Reel of 2000)
£0.188
Wurth Elektronik Coupled Inductor Iron Powder Core , 1.5 μH
  • RS Stock No. 168-3146
  • Mfr. Part No. 7448841015
Each (On a Reel of 2000)
£1.366
Bourns, SRR5028, 5028 Shielded Wire-wound SMD Inductor with a Ferrite Core, 39 μH ±30% Wire-Wound 860mA Idc Q:8
  • RS Stock No. 727-2066P
  • Mfr. Part No. SRR5028-390Y
Each (Supplied on a Reel)
£0.318
TE Connectivity Magnetic Antenna Base ANT-MAG-B50-SMA
  • RS Stock No. 272-8934
  • Mfr. Part No. ANT-MAG-B50-SMA
Each (In a Bag of 50)
£11.657
TE Connectivity 82kΩ Metal Oxide Resistor 3W ±5% ROX3SJ82K
  • RS Stock No. 214-3020
  • Mfr. Part No. ROX3SJ82K
Each (In a Pack of 10)
£0.26
KYOCERA AVX, VC Varistor 600pF 1A, Clamping 32V, Varistor 18.5V, 1206 (3216M)
  • RS Stock No. 464-8909
  • Mfr. Part No. VC120614A300DP
Each (In a Pack of 25)
£0.42
Murata 68 mH ±10% Leaded Inductor, 90mA Idc, 57Ω Rdc, 1900R
  • RS Stock No. 715-7273P
  • Mfr. Part No. 19R686C
Each (Supplied in a Box)
£1.34
RS PRO Omni-Directional, Lead Wire 6mm Microphone Condenser, -42dB
  • RS Stock No. 754-2100P
Each (Supplied in a Bag)
£2.67
TDK WR Wireless Charging Coil Receiver, 11 μH, 12mm dia.
  • RS Stock No. 185-8187
  • Mfr. Part No. WR202010-18M8-ID
Each (In a Tray of 675)
£1.75
Vishay WSLP 5mΩ, 0805 (2012M) Metal Strip SMD Resistor ±1% 1W
  • RS Stock No. 165-3091
  • Mfr. Part No. WSLP08055L000FEA18
Each (On a Reel of 5000)
£0.35
Potentiometer 250 Ohm linear ? 20%
  • RS Stock No. 640-702
  • Mfr. Part No. SMC-10 V10 251 A 2020 MTA
Each
£1.96
RS PRO 80dB Through Hole Continuous Internal Piezo Buzzer, 24 (Dia.) x 9mm, 3V dc Min, 20V dc Max
  • RS Stock No. 238-044P
Each (Supplied in a Box)
£3.55
QT Quarztechnik 8MHz Crystal ±10ppm SMD 4-Pin 5.2 x 3.4 x 1mm
  • RS Stock No. 815-0295
  • Mfr. Part No. QTC5A8.00000FDT1I20R
Each (In a Bag of 5)
£0.804
Abracon 25MHz Crystal ±20ppm SMD 5 x 3 x 1.1mm
  • RS Stock No. 171-0631P
  • Mfr. Part No. ABM3B-25.000MHZ-B2-T
Each (Supplied on a Reel)
£0.454
Genteq GEM III 97F9000 Metallised Polypropylene Film Capacitor, 1 kV dc, 440 V ac, ±6%, 7.5μF
  • RS Stock No. 908-4476
  • Mfr. Part No. 97F9036
Each
£13.39
RS PRO 80dB Through Hole Piezo Buzzer, 14.0 (Dia.) x H6.7mm, 30V Max
  • RS Stock No. 181-2739
Each (In a Pack of 10)
£0.891
Vishay 43P Series 20-Turn Through Hole Trimmer Resistor with Pin Terminations, 10kΩ ±10% 1/2W ±100ppm/°C Side Adjust
  • RS Stock No. 162-237P
  • Mfr. Part No. M43P103KB40
Each (Supplied in a Box)
£3.19
100Ω, SMD Trimmer Potentiometer 0.25W Top Adjust Bourns, 3314
  • RS Stock No. 100-1105
  • Mfr. Part No. 3314G-1-101E
Each (In a Pack of 10)
£1.082
TE Connectivity 1kW Thick Film Chassis Mount Resistor 2-2176740-8 10%
  • RS Stock No. 303-786
  • Mfr. Part No. 2-2176740-8
Each
£276.32
Results per page
1
7697
7767

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