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

154518 Products showing for Passive Components

619 of 999+
Vishay CRHV 50MΩ, 1206 (3216M) Thick Film SMD Resistor ±1% 0.3W
  • RS Stock No. 819-8736
  • Mfr. Part No. CRHV1206AF50M0FKET
Each
£4.39(exc. VAT)
Rubycon 47μF Aluminium Electrolytic Capacitor 35V dc, Radial, Through Hole - 35ZLJ47M5X11
  • RS Stock No. 725-8966P
  • Mfr. Part No. 35ZLJ47M5X11
Each (Supplied in a Bag)
£0.109(exc. VAT)
Vishay MMU0102 51Ω, Melf 0102 Thin Film SMD Resistor ±1% 0.2W
  • RS Stock No. 678-7031
  • Mfr. Part No. MMU01020C5109FB300
Each (In a Pack of 25)
£0.073(exc. VAT)
Vishay MKP 338 Polypropylene Film Capacitor, 300V ac, ±20%, 4.7nF, Through Hole
  • RS Stock No. 684-2184
  • Mfr. Part No. BFC233860472
Each (In a Pack of 5)
£0.978(exc. VAT)
TE Connectivity 12kΩ Metal Oxide Resistor 9W ±5% ROX9J12K
  • RS Stock No. 187-1269
  • Mfr. Part No. ROX9J12K
Each (In a Pack of 5)
£0.444(exc. VAT)
Nichicon 270μF Aluminium Electrolytic Aluminium Electrolytic Capacitor 450V dc, Snap-In - LGX2W271MELC30
  • RS Stock No. 566-999
  • Mfr. Part No. LGX2W271MELC30
Each
£6.86(exc. VAT)
100kΩ, Through Hole Trimmer Potentiometer 0.5W Side Adjust Bourns, 3362
  • RS Stock No. 167-3268
  • Mfr. Part No. 3362W-1-104LF
Each (In a Tube of 50)
£0.647(exc. VAT)
EPCOS Thermistor, 150Ω Resistance, PTC Type, 4 x 5 x 7.5mm
  • RS Stock No. 191-1917
  • Mfr. Part No. B59890C0120A070
Each
£0.61(exc. VAT)
Vishay 43P Series 20-Turn Through Hole Trimmer Resistor with Pin Terminations, 200kΩ ±10% 1/2W ±100ppm/°C
  • RS Stock No. 162-271
  • Mfr. Part No. M43P204KB40
Each
£3.65(exc. VAT)
KEMET Polymer, Magnetic Shielding Sheet, 240mm x 240mm x 0.2mm
  • RS Stock No. 181-5906
  • Mfr. Part No. EFS(02)-240X240
Each
£81.57(exc. VAT)
Digisound 100dB Continuous Internal Piezo Buzzer, 43 x 34mm, 5V Min, 28V Max
  • RS Stock No. 283-6736
  • Mfr. Part No. B/CP 28-100
Each
£17.41(exc. VAT)
Nichicon 470μF Aluminium Electrolytic Capacitor 35V dc, Radial, Through Hole - UVR1V471MPD
  • RS Stock No. 862-3370
  • Mfr. Part No. UVR1V471MPD
Each
£0.35(exc. VAT)
Yageo 1Ω, 1206 (3216M) Thick Film Surface Mount Fixed Resistor ±1% 0.25W
  • RS Stock No. 242-7158P
  • Mfr. Part No. RC1206FR-071RL
Each (Supplied on a Reel)
£0.022(exc. VAT)
Arcol, 3.3Ω 15W Wire Wound Chassis Mount Resistor HS15 3R3 J ±5%
  • RS Stock No. 160-427
  • Mfr. Part No. HS15 3R3 J
Each
£3.48(exc. VAT)
Yageo 22Ω Metal Film Fixed Resistor 0.5W ±1% MFR50SFTE52-22R
  • RS Stock No. 199-7715P
  • Mfr. Part No. MFR50SFTE52-22R
Each (Supplied in a Box)
£0.021(exc. VAT)
Vishay 47kΩ Metal Film Resistor 1W ± 5% PR01000104702JR500
  • RS Stock No. 251-3748
  • Mfr. Part No. PR01000104702JR500
Each (On a Tape of 5)
£0.21(exc. VAT)
Broadcom 5V dc Optical Encoder with a 4 mm
  • RS Stock No. 178-3103
  • Mfr. Part No. HEDL-5540#A11
Each (In a Tray of 20)
£38.62(exc. VAT)
Vishay 533 5kΩ Rotary Potentiometer 3-Turns 1-Gang Panel Mount, 533B1502JL
  • RS Stock No. 460-1900P
  • Mfr. Part No. 533B1502JL
Each (Supplied in a Box)
£32.97(exc. VAT)
CSTLS4M00G56Z-A0, Ceramic Resonator, 4MHz 3rd Overtone, Fundamental 47pF, 3-Pin SMT, 8 x 5.5 x 3mm
  • RS Stock No. 250-7786
  • Mfr. Part No. CSTLS4M00G56Z-A0
Each (In a Bag of 50)
£0.119(exc. VAT)
Arcol Ohmite 2.5kΩ Thick Film SMD Resistor ±1% 45W
  • RS Stock No. 210-4690
  • Mfr. Part No. TKH45P2K50FE-TR
Each (On a Reel of 500)
£3.674(exc. VAT)
Results per page
1
619
7726

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