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

169715 Products showing for Passive Components

Sort by
1051 of 999+
Last RS stock
TE Connectivity 22 Ω Wirewound Wirewound Resistor 1 W 5 % EP1WSSS22RJ
  • RS Stock No. 272-2473
  • Mfr. Part No. EP1WSSS22RJ
Subtotal (10 units, on tapes of 10)
£0.23(exc. VAT)
£0.023/unit
In Stock
Panasonic 220 μF Aluminium Electrolytic Capacitor 35V dc, Surface Solder 500
  • RS Stock No. 747-9040
  • Mfr. Part No. EEEFK1V221P
Subtotal (500 units, on reels of 500)
£182.50(exc. VAT)
£0.365/unit
In Stock
Vishay MKP 1837 Film Capacitor, ±1 %, 33 nF 100 V dc 63V ac, Through Hole
  • RS Stock No. 166-6459P
  • Mfr. Part No. MKP1837333011
Subtotal (10 units, supplied in a bag)
£10.71(exc. VAT)
£1.071/unit
In Stock
Wurth Elektronik 302251099 Gasket of Polyurethane Foam With Adhesive Tape 1 m x 25mm x 10 mm
  • RS Stock No. 748-367
  • Mfr. Part No. 302251099
Subtotal (1 unit)
£14.56(exc. VAT)
£14.56/unit
Currently unavailable
Rubycon 220 μF Capacitor 35V dc, Radial, Through Hole - 35YXF220M10X12.5 Solder
  • RS Stock No. 191-7842
  • Mfr. Part No. 35YXF220M10X12.5
Subtotal (5 units, in packs of 5)
£2.66(exc. VAT)
£0.532/unit
In Stock
Wurth Elektronik 38401505 Shielding Strip of Silicone Nickel Graphite 1 m x 3.96mm x 4.45 mm
  • RS Stock No. 212-0448
  • Mfr. Part No. 38401505
Subtotal (1 unit)
£66.03(exc. VAT)
£66.03/unit
In Stock
Wurth Elektronik Ferrite Bead (Cable) 6 mm (Axial) (EMI Suppression), 35 Ω impedance at 25 MHz, 59 Ω impedance at 100
  • RS Stock No. 265-1661
  • Mfr. Part No. 74270022
Subtotal (10 units, on tapes of 10)
£6.00(exc. VAT)
£0.60/unit
In Stock
CHEMI-CON 180 μF Through Hole Polymer Capacitor, 25V
  • RS Stock No. 251-4836
  • Mfr. Part No. APSG250ELL181MH08S
Subtotal (10 units, in packs of 10)
£6.40(exc. VAT)
£0.64/unit
Temporarily out of stock
Essentra Ferrite Ring Toroid Core 12 mm, For: Multi-Turn Suppression Core 15 mm ID 25 mm OD
  • RS Stock No. 257-4452
  • Mfr. Part No. RT250-150-120 K5B
Subtotal (5 units, in packs of 5)
£14.36(exc. VAT)
£2.872/unit
In Stock
Murata Ferrite Bead 0.8 mm (Surface) (0603) (Chip Ferrite Bead), 1500 Ω impedance at 100 MHz, 1500 Ω impedance at 1 GHz
  • RS Stock No. 167-4980
  • Mfr. Part No. BLM18HE152SN1D
Subtotal (4000 units, on reels of 4000)
£184.00(exc. VAT)
£0.046/unit
Temporarily out of stock
Variohm Group 640 ppr Pulse Incremental Mechanical Rotary Encoder with a 0.38 in Round Shaft, Screw
  • RS Stock No. 315-132
  • Mfr. Part No. H40640000005ANUFBX
Subtotal (1 unit)
£39.48(exc. VAT)
£39.48/unit
In Stock
Renesas Electronics, 1MHz XO Oscillator, ±50 ppm LVCMOS, 6-Pin Surface Mount XLH735001.000000X
  • RS Stock No. 217-7996
  • Mfr. Part No. XLH735001.000000X
Subtotal (25 units, in packs of 25)
£15.25(exc. VAT)
£0.61/unit
Temporarily out of stock
TE Connectivity RN73 1.05 kΩ, 0805 Thin Film Surface Mount Resistor ±0.1 % Surface 0.1 W - RN73C2A1K05B
  • RS Stock No. 215-2440
  • Mfr. Part No. RN73C2A1K05B
Subtotal (5 units, in packs of 5)
£3.67(exc. VAT)
£0.734/unit
In Stock
TDK B32656S Film Capacitor 1.5 μF 850V ac 850 V dc, Tab 2
  • RS Stock No. 334-619
  • Mfr. Part No. B32656S8155J561
Subtotal (1 unit)
£8.98(exc. VAT)
£8.98/unit
In Stock
Isabellenhutte BVR 1 mΩ, 4026 Current Sensing Surface Mount Resistor ±1 % 5 W - BVR-I-R001-1.0
  • RS Stock No. 210-5117
  • Mfr. Part No. BVR-I-R001-1.0
Subtotal (5 units, on tapes of 5)
£22.50(exc. VAT)
£4.50/unit
In Stock
Vishay 18 pF Multilayer Ceramic Capacitor, 50V dc, ±1 %, Surface
  • RS Stock No. 272-7841
  • Mfr. Part No. VJ0603A180FXACW1BC
Subtotal (4000 units, on reels of 4000)
£132.00(exc. VAT)
£0.033/unit
In Stock
Murata 5 A Common Mode Choke 20 mΩ 50V
  • RS Stock No. 104-8556
  • Mfr. Part No. DLW5BTM251SQ2L
Subtotal (5 units, in packs of 5)
£4.75(exc. VAT)
£0.95/unit
In Stock
KEMET 22 μF MnO2 Tantalum Capacitor 20V dc, Surface, T491 Series
  • RS Stock No. 538-2622P
  • Mfr. Part No. T491D226K020AT
Subtotal (10 units, supplied on a continuous strip)
£7.48(exc. VAT)
£0.748/unit
In Stock
Vishay, IHLP, EK Shielded Surface Mount Inductor with a Metal Composite Core, 1.5 μH ±20 % 7.2 A Idc
  • RS Stock No. 565-165
  • Mfr. Part No. IHLP2020CZEK1R5M01
Subtotal (10 units, on tapes of 10)
£6.48(exc. VAT)
£0.648/unit
Limited stock
Panasonic ERA 10 kΩ, 0603 Metal Film Surface Mount Resistor ±0.1 % Surface 0.1 W - ERA3ARB103V
  • RS Stock No. 181-2451
  • Mfr. Part No. ERA3ARB103V
Subtotal (500 units, on reels of 500)
£80.50(exc. VAT)
£0.161/unit
1
1051
8486
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