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

168655 Products showing for Passive Components

Sort by
1937 of 999+
In Stock
RS PRO 4.02 kΩ, 0402 Thick Film Surface Mount Resistor 1 % 0.63 W
  • RS Stock No. 183-9551
Subtotal (10000 units, on reels of 10000)
£20.00(exc. VAT)
£0.002/unit
In Stock
Panasonic ERJ 130 Ω, 0603 Thick Film Surface Mount Resistor ±1 % 0.1 W - ERJ3EKF1300V
  • RS Stock No. 183-8885
  • Mfr. Part No. ERJ3EKF1300V
Subtotal (5000 units, on reels of 5000)
£20.00(exc. VAT)
£0.004/unit
Last RS stock
Linx ANT-DB1-WRT-UFL-100 Dome WiFi Antenna with SMA Male Connector, WiFi
  • RS Stock No. 247-3116
  • Mfr. Part No. ANT-DB1-WRT-UFL-100
Subtotal (1 unit)
£21.12(exc. VAT)
£21.12/unit
In Stock
QANTEK 4 MHz Crystal ±20 ppm HC-49 2-Pin 4.4 mm 11.4 mm 4.8mm
  • RS Stock No. 814-9475
  • Mfr. Part No. QCS4.00000F18B23R
Subtotal (10 units, in bags of 10)
£2.02(exc. VAT)
£0.202/unit
Temporarily out of stock
RS PRO 2.21 kΩ, 0402 Thick Film Surface Mount Resistor 1 % 0.63 W
  • RS Stock No. 184-0030
Subtotal (1000 units, on reels of 1000)
£3.00(exc. VAT)
£0.003/unit
In Stock
Samsung Electro-Mechanics 220 pF Multilayer Ceramic Capacitor, 50V dc, ±5 %, Surface
  • RS Stock No. 257-5899
  • Mfr. Part No. CL10C221JB81PNC
Subtotal (100 units, on tapes of 100)
£2.50(exc. VAT)
£0.025/unit
Temporarily out of stock
KEMET C4AF Polypropylene Capacitor, 10 %, 3.7 μF 350V ac, PCB
  • RS Stock No. 207-8882
  • Mfr. Part No. C4AF7BU4370T12K
Subtotal (64 units, in boxes of 64)
£117.44(exc. VAT)
£1.835/unit
Last RS stock
KYOCERA AVX 220 μF MnO2 Tantalum Capacitor 2.5V dc, Surface, TPS Series
  • RS Stock No. 699-3472
  • Mfr. Part No. TPSB227K002R0150
Subtotal (5 units, in packs of 5)
£1.08(exc. VAT)
£0.216/unit
In Stock
Wurth Elektronik 10 μF Surface Aluminium Polymer Capacitor, 100V dc
  • RS Stock No. 275-9302
  • Mfr. Part No. 865080845005
Subtotal (900 units, on reels of 900)
£136.80(exc. VAT)
£0.152/unit
Temporarily out of stock
TE Connectivity 47 kΩ Metal Oxide Resistor 5 W 5 % SQMR547KJ
  • RS Stock No. 161-5510
  • Mfr. Part No. SQMR547KJ
Subtotal (500 units, in boxes of 500)
£129.50(exc. VAT)
£0.259/unit
In Stock
Murata Thermistor, PTC Type 33 Ω, 0603 0.8 mm 1.6 mm 0.8 mm
  • RS Stock No. 619-7655
  • Mfr. Part No. PRG18BB330MB1RB
Subtotal (10 units, in packs of 10)
£1.46(exc. VAT)
£0.146/unit
Currently unavailable
TDK Cubic Coil With Ferrite Core Inductor Kit, 20 pieces
  • RS Stock No. 464-772
  • Mfr. Part No. B82498X001
Subtotal (1 unit)
£54.15(exc. VAT)
£54.15/unit
In Stock
Panasonic ERJ 36 Ω, 0805 Thick Film Surface Mount Resistor ±0.5 % 0.1 W - ERJ6RED36R0V
  • RS Stock No. 810-2025
  • Mfr. Part No. ERJ6RED36R0V
Subtotal (100 units, in bags of 100)
£4.10(exc. VAT)
£0.041/unit
Currently unavailable
TE Connectivity 3550 3.9 kΩ, 4320 Thick Film ±5 % 5 W - 35503K9JT
  • RS Stock No. 186-5581
  • Mfr. Part No. 35503K9JT
Subtotal (1000 units, on reels of 1000)
£438.00(exc. VAT)
£0.438/unit
In Stock
Vishay 1 nF Multilayer Ceramic Capacitor, 630V dc, 10 %, Surface
  • RS Stock No. 298-347
  • Mfr. Part No. VJ1812Y102KBLTW1HV
Subtotal (1000 units, on reels of 1000)
£69.00(exc. VAT)
£0.069/unit
Temporarily out of stock
Nidec Components M-22E10 20 kΩ Rotary Wirewound Potentiometer 10-Turns 1-Gang, M-22E10 20K
  • RS Stock No. 244-4037
  • Mfr. Part No. M-22E10 20K
Subtotal (10 units, in trays of 10)
£117.17(exc. VAT)
£11.717/unit
In Stock
KEMET 220 μH Nickel Zinc Ferrite Coil Inductor, 720 mA Idc, 470 mΩ Rdc, SBC4
  • RS Stock No. 265-2422
  • Mfr. Part No. SBC4-221-721
Subtotal (1 unit)
£1.64(exc. VAT)
£1.64/unit
In Stock
KEMET Polymer Base Blended with Micron Sized Magnetic Powders Shielding Sheet 240 mm x 240mm x 0.5 mm
  • RS Stock No. 181-5583
  • Mfr. Part No. EFF4(05)-240X240
Subtotal (10 units, in bags of 10)
£906.40(exc. VAT)
£90.64/unit
Temporarily out of stock
Taoglas FXR.4030.52.0075X.B.dg PCB RFID Antenna with F Connector, NFC
  • RS Stock No. 690-893
  • Mfr. Part No. FXR.4030.52.0075X.B.dg
Subtotal (50 units, in bags of 50)
£136.95(exc. VAT)
£2.739/unit
Currently unavailable
KOA RN73H 10 kΩ, 0402 Thin Film Surface Mount Resistor ±0.1 % Surface 0.06 W - RN73H1ETTP1002B25
  • RS Stock No. 178-6333
  • Mfr. Part No. RN73H1ETTP1002B25
Subtotal (10000 units, on reels of 10000)
£850.00(exc. VAT)
£0.085/unit
1
1937
8433
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