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

154820 Products showing for Passive Components

1096 of 999+
RS PRO 90dB SMD External Magnetic Buzzer Component, 10.5 x 10.4 x 2.5mm, 2.4V Min, 4.5V Max
  • RS Stock No. 754-2040P
Each (Supplied on a Reel)
£2.868
Arcol Ohmite 50W 500Ω Linear Rheostat 0.316A, RJS500E
  • RS Stock No. 144-5534
  • Mfr. Part No. RJS500E
Each
£115.54
Arcol, 10Ω 15W Wire Wound Chassis Mount Resistor HS15 10R J ±5%
  • RS Stock No. 159-764P
  • Mfr. Part No. HS15 10R J
Each (Supplied in a Bag)
£4.39
3021010, Shielding Strip of Ni/Cu Layered Metallized Fiber/Polyether Urethane Foam With Tape 1m x 10mm x 10mm
  • RS Stock No. 163-4350
  • Mfr. Part No. 3021010
Each (In a Bag of 100)
£8.982
TE Connectivity, 4.7Ω 1.2kW Wirewound High Power Resistor TE1200B4R7J ±5%
  • RS Stock No. 224-0122
  • Mfr. Part No. TE1200B4R7J
Each (In a Box of 5)
£90.938
EPCOS Metal Oxide Varistor 400A, Clamping 135V
  • RS Stock No. 246-9796
  • Mfr. Part No. B72580T0500K062
Each (On a Reel of 1000)
£0.229
Abracon 20MHz Crystal Unit ±50ppm SMD 2-Pin 7.5 x 5 x 1.7mm
  • RS Stock No. 226-0668
  • Mfr. Part No. FC7ASBBMD20.0-T2
Each (In a Pack of 10)
£1.141
Panasonic Thermistor, 3kΩ Resistance, NTC Type, 0603 (1608M), 1.6 x 0.8 x 0.8mm
  • RS Stock No. 764-0715
  • Mfr. Part No. ERTJ1VT302H
Each (In a Pack of 25)
£0.058
Vitrohm 10Ω Through Hole Fixed Resistor 2.5W ±5% CRF250JT-73-10RUL
  • RS Stock No. 212-3475
  • Mfr. Part No. CRF250JT-73-10RUL
Each (On a Tape of 10)
£0.406
Phoenix Contact, VAL-SPP Surge Arrester 335 V dc Maximum Voltage Rating 40kA Maximum Surge Current Type 2 Arrester
  • RS Stock No. 494-728
  • Mfr. Part No. 1466602
Each
£235.38
EPCOS, AdvancedD Metal Oxide Varistor 550pF 100A, Clamping 1120V, Varistor 680V, 20 mm
  • RS Stock No. 241-6784
  • Mfr. Part No. B72220S2421K101
Each (In a Bag of 200)
£0.735
STMicroelectronics, STM32WB 200 V 2.4GHz Harmonic Filter
  • RS Stock No. 213-3379
  • Mfr. Part No. MLPF-WB-01E3
Each (In a Pack of 50)
£0.131
Genteq GEM III 97F9000 Metallised Polypropylene Film Capacitor, 370V ac, ±6%, 40μF
  • RS Stock No. 908-4502
  • Mfr. Part No. 97F9614
Each
£22.72
Panasonic, 0603 (1608M) Thick Film Surface Mount Fixed Resistor ±1% 0.1W
  • RS Stock No. 287-629
  • Mfr. Part No. ERJ3EKF2152V
Each (In a Bag of 10)
£0.006
EPCOS B32674 Polypropylene Capacitor PP, 750 V dc, 900 V dc, ±10%, 1μF, Through Hole
  • RS Stock No. 882-9313
  • Mfr. Part No. B32674D1105K000
Each (In a Pack of 5)
£1.98
Yageo 100kΩ, 0603 (1608M) Thin Film SMD Resistor ±0.1% 0.1W
  • RS Stock No. 199-1385
  • Mfr. Part No. RT0603BRD07100KL
Each (On a Tape of 10)
£0.078
Panasonic ERJP14 560Ω, 1210 (3225M) Thick Film SMD Resistor ±1% 0.5W
  • RS Stock No. 922-9039
  • Mfr. Part No. ERJP14F5600U
Each (On a Reel of 5000)
£0.049
RS PRO 13mm Grey Potentiometer Knob for 6.4mm Shaft D Shaped
  • RS Stock No. 467-6718
Each (In a Pack of 10)
£0.596
Abracon APAMSJ-137 Rod WiFi Antenna with SMA Connector, 5G
  • RS Stock No. 240-0881
  • Mfr. Part No. APAMSJ-137
Each (In a Bag of 100)
£6.159
EPCOS, B82462-A4 Wire-wound SMD Inductor with a Ferrite Core, 33 μH ±10% Wire-Wound 1.8A Idc
  • RS Stock No. 496-0451P
  • Mfr. Part No. B82464A4333K000
Each (Supplied on a Reel)
£0.76
Results per page
1
1096
7741

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