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

154071 Products showing for Passive Components

1810 of 999+
SMD Trimmer Potentiometer 0.25W Side Adjust Bourns, 3314
  • RS Stock No. 445-926
  • Mfr. Part No. 3314R-1-103E
Each (In a Bag of 2)
£1.15(exc. VAT)
QANTEK 16MHz Crystal ±10ppm SMD 4-Pin 2.5 x 2 x 0.6mm
  • RS Stock No. 173-5767
  • Mfr. Part No. QC2516.0000F12B12
Each (On a Reel of 1000)
£0.182(exc. VAT)
Wurth Elektronik WCAP-FTX2 Metallised Polypropylene Film Capacitor, 275V ac, ±10%, 470nF
  • RS Stock No. 124-7410
  • Mfr. Part No. 890324024005
Each (In a Bag of 50)
£0.514(exc. VAT)
Vishay PE30 47kΩ Rotary Potentiometer 1-Gang Panel Mount, PE30L0FR473KAB
  • RS Stock No. 790-4306
  • Mfr. Part No. PE30L0FR473KAB
Each
£40.60(exc. VAT)
Nichicon 470μF Conductive Polymer Aluminium Solid Electrolytic Capacitor 6.3V dc, Surface Mount - RHA0J471MCN1GS
  • RS Stock No. 222-9562P
  • Mfr. Part No. RHA0J471MCN1GS
Each (Supplied on a Reel)
£0.365(exc. VAT)
EPCOS B32523 Polyester Film Capacitor, 200 V ac, 400 V dc, ±10%, 220nF, Through Hole
  • RS Stock No. 194-3571
  • Mfr. Part No. B32523Q6224K000
Each (In a Box of 720)
£0.333(exc. VAT)
TE Connectivity RH73 50GΩ, 0805 (2012M) Thick Film SMD Resistor ±30% 0.125W
  • RS Stock No. 294-5135P
  • Mfr. Part No. RH73X2A50GNTN
Each (Supplied on a Reel)
£5.86(exc. VAT)
Panasonic 47μF Aluminium Electrolytic Capacitor 25V dc, Surface Mount - EEEFK1E470P
  • RS Stock No. 747-8968
  • Mfr. Part No. EEEFK1E470P
Each (On a Reel of 1000)
£0.134(exc. VAT)
Yageo 750Ω Carbon Film Fixed Resistor 1/4W 5% CFR-25JT-52-750R
  • RS Stock No. 199-1865P
  • Mfr. Part No. CFR-25JT-52-750R
Each (Supplied in a Box)
£0.015(exc. VAT)
2J Antenna 2JCP2542601a Patch SMT Antenna, 2G (GSM/GPRS), 3G (UTMS), 4G (LTE)
  • RS Stock No. 204-7530
  • Mfr. Part No. 2JCP2542601a
Each
£9.19(exc. VAT)
ILSI, 25MHz Crystal Oscillator, 50ppm SMD ISM92-3251BH-25.000MHz
  • RS Stock No. 219-2185
  • Mfr. Part No. ISM92-3251BH-25.000MHz
Each (On a Tape of 5)
£1.208(exc. VAT)
Bourns 24 Pulse Incremental Mechanical Rotary Encoder with a 6 mm Flat Shaft (Not Indexed), Through Hole
  • RS Stock No. 737-7748P
  • Mfr. Part No. PEC11R-4215F-S0024
Each (Supplied in a Box)
£1.51(exc. VAT)
EPCOS B32671P Polypropylene Film Capacitor, 200 V ac, 630 V dc, ±10%, 180nF, Through Hole
  • RS Stock No. 172-5898
  • Mfr. Part No. B32671P6184K000
Each (In a Bag of 1000)
£0.264(exc. VAT)
Arcol Ohmite 150W High Power Resistor HS150 2R F ±1%
  • RS Stock No. 263-4244
  • Mfr. Part No. HS150 2R F
Each
£22.27(exc. VAT)
Bourns 95 100kΩ Rotary Potentiometer 1-Gang Panel Mount, 95A1A-B24-A20L
  • RS Stock No. 789-9475
  • Mfr. Part No. 95A1A-B24-A20L
Each
£6.04(exc. VAT)
2kΩ, SMD Trimmer Potentiometer 0.25W Top Adjust Bourns, 3314
  • RS Stock No. 691-7406P
  • Mfr. Part No. 3314J-1-202E
Each (Supplied on a Reel)
£1.576(exc. VAT)
KEMET R76_125C Polypropylene Film Capacitor, 1 kV dc, 600 V ac, ±5%, 270nF, Through Hole
  • RS Stock No. 192-8706
  • Mfr. Part No. R76QR327050H4J
Each (In a Tray of 288)
£1.03(exc. VAT)
Nichicon 1F Supercapacitor ±20% Tolerance, UM 2.7V dc, Through Hole
  • RS Stock No. 715-3502
  • Mfr. Part No. JUMT1105MPD
Each (In a Pack of 5)
£1.844(exc. VAT)
Littelfuse, LA Metal Oxide Varistor 500pF 50A, Clamping 650V, Varistor 429V
  • RS Stock No. 173-2642
  • Mfr. Part No. V250LA20AP
Each (In a Bag of 700)
£0.203(exc. VAT)
CHEMI-CON 390μF Through Hole Polymer Capacitor, 25V
  • RS Stock No. 251-4840
  • Mfr. Part No. APSG250ELL391MJB5S
Each
£1.82(exc. VAT)
Results per page
1
1810
7704

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