Over 800,000 products available

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

161545 Products showing for Passive Components

5811 of 999+
In Stock
Vishay P16 10 mΩ Rotary Potentiometer 1-Turns 1-Gang Panel Mount
  • RS Stock No. 298-397
  • Mfr. Part No. P16NP103MAB15CV1D
Subtotal (1 unit)
£15.10(exc. VAT)
Currently unavailable
Vishay Single Layer Ceramic Capacitor 4.7 nF 400V ac ±20 % Y5U Dielectric, WYO, Through Hole 125 °C Max Op. Temp.
  • RS Stock No. 173-1389
  • Mfr. Part No. WKO472MCPEJ0KR
Subtotal (1 box of 500 units)
£271.00(exc. VAT)
In Stock
Wurth Elektronik WRIS-RSKS 39 Ω, 0402 Thick Film Surface Mount Resistor ±5 % Surface 0.1 W - 560112110014
  • RS Stock No. 427-403
  • Mfr. Part No. 560112110014
Subtotal (1 tape of 10 units)
£0.25(exc. VAT)
In Stock
KEMET 12 pF Multilayer Ceramic Capacitor, 50V dc, ±5 %, Surface Mount
  • RS Stock No. 147-437
  • Mfr. Part No. C0603C120J5GACTU
Subtotal (1 pack of 50 units)
£0.90(exc. VAT)
In Stock
Bourns 1 kΩ Thick Film Resistor 20 W 5 % PWR220T-20-1001F
  • RS Stock No. 796-2457
  • Mfr. Part No. PWR220T-20-1001F
Subtotal (1 unit)
£3.69(exc. VAT)
Currently unavailable
Alpha 250 Ω Metal Film Fixed Resistor MCY250R00T
  • RS Stock No. 351-1525
  • Mfr. Part No. MCY250R00T
Subtotal (1 unit)
£19.12(exc. VAT)
In Stock
RS PRO RSTN 56 kΩ, 0402 Thin Film Resistor 0.1 % 0.06 W
  • RS Stock No. 243-0471
Subtotal (1 tape of 100 units)
£3.80(exc. VAT)
In Stock
Schurter, FPBB 3 A 250V ac/dc 50Hz, 60 Hz, DIN Rail Power Line Filter, Cage Clamp Terminal 1 Phase
  • RS Stock No. 188-0412
  • Mfr. Part No. 3-103-706
Subtotal (1 unit)
£24.21(exc. VAT)
Currently unavailable
TE Connectivity 1 kΩ Wirewound Wirewound Resistor 4 W 5 %
  • RS Stock No. 272-2520
  • Mfr. Part No. EP4WSS1K0J
Subtotal (1 box of 5000 units)
£440.00(exc. VAT)
Temporarily out of stock
Panasonic ERJPC6 3400000 Ω, Tape & Reel Thick Film Resistor Thick Film Resistor ±0.1 to 0.5 % Surface 0.25 W -
  • RS Stock No. 788-752
  • Mfr. Part No. ERJPC6D3404V
Subtotal (1 tape of 10 units)
£0.50(exc. VAT)
In Stock
RS PRO RS 240 kΩ, 0603 Thick Film Surface Mount Resistor ±1 % 0.1 W
  • RS Stock No. 804-9031
Subtotal (1 reel of 5000 units)
£10.00(exc. VAT)
Last RS stock
TE Connectivity CRGH 3.9 kΩ, 0603 Thick Film Surface Mount Resistor ±5 % Surface 0.2 W - CRGH0603J3K9
  • RS Stock No. 807-5550
  • Mfr. Part No. CRGH0603J3K9
Subtotal (1 bag of 100 units)
£0.30(exc. VAT)
Temporarily out of stock
Panasonic 47 μF Aluminium Electrolytic Capacitor 35V, Surface Mount Solder - EEEFP1V470AL Taping
  • RS Stock No. 781-537
  • Mfr. Part No. EEEFP1V470AL
Subtotal (1 tape of 5 units)
£1.00(exc. VAT)
In Stock
AVX 10 nF Multilayer Ceramic Capacitor, 50V dc, ±10 %, Surface
  • RS Stock No. 135-3225
  • Mfr. Part No. 08055C103KAT2A
Subtotal (1 reel of 4000 units)
£44.00(exc. VAT)
Temporarily out of stock
Wurth Elektronik WCAP-FTXX Film Capacitor X2, ±10 %, 15 nF 310 V dc 310V ac, Through Hole
  • RS Stock No. 163-3460
  • Mfr. Part No. 890334023008
Subtotal (1 bag of 500 units)
£84.50(exc. VAT)
In Stock
KEMET 10 nF Multilayer Ceramic Capacitor, 25V dc, ±10 %, Surface Mount
  • RS Stock No. 146-4141
  • Mfr. Part No. C0603C103K3RACTU
Subtotal (1 reel of 4000 units)
£40.00(exc. VAT)
In Stock
IQD 7.3728 MHz Crystal Unit ±30 ppm HC-49 2-Pin 4.1 mm 11.05 mm 4.7mm
  • RS Stock No. 148-5675
  • Mfr. Part No. LFXTAL003335BULK
Subtotal (1 pack of 50 units)
£11.65(exc. VAT)
In Stock
Euroquartz 4 MHz Crystal ±30 ppm HC-49 2-Pin 3.5 mm 10.77 mm 4.34mm
  • RS Stock No. 693-8774P
  • Mfr. Part No. 4.000MHz HC49/4H/30/50/-40+85/18pF/ATF
Subtotal 1 unit (supplied on a continuous strip)
£0.46(exc. VAT)
Currently unavailable
Bourns PC 10 kΩ Rotary Potentiometer 1-Turns 1-Gang Rear, PCW1J-B24-BAB103L
  • RS Stock No. 851-7427
  • Mfr. Part No. PCW1J-B24-BAB103L
Subtotal (1 unit)
£5.14(exc. VAT)
Currently unavailable
Bourns 5V dc 15 ppr Pulse Optical Encoder
  • RS Stock No. 239-4184
  • Mfr. Part No. PER601-P117-N0015
Subtotal (1 box of 220 units)
£782.32(exc. VAT)
1
5811
8078
Results per page

Guides & Articles

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
Resistors Guide
What are the different types of resistors? Learn more in our comprehensive guide.
Read more
Potentiometers Guide
Our potentiometers guide will help you understand their uses, how they work, the various types and characteristics.
Read more
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