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 include 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 passive component that can gather and hold a charge in a way that is similar to how a battery functions. This type of passive component is made of 2 close conductors (usually plates) that are separated by a dielectric material. The plates accumulate electric charge when connected to a power source. One plate accumulates a positive charge and the other plate accumulates a 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

Another type of passive component is the resistor. 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, it's 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 component 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; some examples would include windings from a transformer and inductors. It is useful because of its low electrical conductivity and high magnetic permeability.

Surge Protection Components

Surge protectors are a part of nearly every home and office today. They provide your expensive electronic equipment and circuitry with added protection against the harmful effects of electricity surges, improving their longevity.

RS is a supplier of passive components with a wide variety of quality products from leading manufacturers across the world.

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

144968 Products showing for Passive Components

1 of 999+
Ohmite, 1mΩ 100W Thick Film Chassis Mount Resistor TGHGCR0010FE ±1%
  • RS Stock No. 893-3368
  • Mfr. Part No. TGHGCR0010FE
Each
SGD64.77(exc. GST)
RS PRO 100μF Electrolytic Tantalum Electrolytic Capacitor 25V dc
  • RS Stock No. 181-4628
Each (In a Pack of 2)
SGD5.865(exc. GST)
Nichicon 2200μF Aluminium Electrolytic Capacitor 16V dc, Radial, Through Hole - UVZ1C222MHD
  • RS Stock No. 845-4648
  • Mfr. Part No. UVZ1C222MHD
Each (In a Pack of 10)
SGD0.741(exc. GST)
Nichicon 4.7μF Aluminium Electrolytic Capacitor 50V dc, Radial, Through Hole - UFG1H4R7MDM
  • RS Stock No. 602-2618
  • Mfr. Part No. UFG1H4R7MDM
Each (In a Pack of 5)
SGD0.096(exc. GST)
Alpha 350Ω Metal Film Fixed Resistor 0.3W ±0.01% MCY350R00T
  • RS Stock No. 351-1531
  • Mfr. Part No. MCY350R00T
Each
SGD26.31(exc. GST)
Panasonic 4.7μF Aluminium Electrolytic Capacitor 50V dc, Radial, Through Hole - EEAGA1H4R7
  • RS Stock No. 414-9171
  • Mfr. Part No. EEAGA1H4R7
Each (In a Pack of 25)
SGD0.222(exc. GST)
Littelfuse, LA Metal Oxide Varistor 80pF 10A, Clamping 775V, Varistor 515V
  • RS Stock No. 800-7062
  • Mfr. Part No. V275LA2P
Each (In a Pack of 10)
SGD0.223(exc. GST)
Vishay 10Ω Metal Film Resistor 2W ±5% PR02000201009JA100
  • RS Stock No. 683-5641
  • Mfr. Part No. PR02000201009JA100
Each (In a Pack of 10)
SGD0.31(exc. GST)
ROHM ESR 150Ω, 1206 (3216M) Thick Film SMD Resistor ±1% 0.5W
  • RS Stock No. 167-3784
  • Mfr. Part No. ESR18EZPF1500
Each (In a Pack of 50)
SGD0.086(exc. GST)
Bourns, MOV-10DxxxK Metal Oxide Varistor 25A, Clamping 710V, Varistor 430V
  • RS Stock No. 233-0777
  • Mfr. Part No. MOV-10D431K
Each (In a Pack of 10)
SGD0.304(exc. GST)
RS PRO 47μF Aluminium Electrolytic Capacitor 16V dc, Radial, Through Hole
  • RS Stock No. 707-5758
Each (In a Pack of 100)
SGD0.101(exc. GST)
Panasonic 22μF Aluminium Electrolytic Aluminium Electrolytic Capacitor 35V dc, Radial, Through Hole - EEUFC1V220
  • RS Stock No. 571-975
  • Mfr. Part No. EEUFC1V220
Each (In a Pack of 5)
SGD0.32(exc. GST)
Panasonic 4.7μF Aluminium Electrolytic Capacitor 35V dc, Radial, Through Hole - ECEA1VKS4R7
  • RS Stock No. 116-903
  • Mfr. Part No. ECEA1VKS4R7
Each (In a Pack of 5)
SGD0.336(exc. GST)
Nova, CCR-122 Metal Film, Axial 48 Resistor Kit, with 480 pieces, 10 Ω → 1MΩ
  • RS Stock No. 747-2714
  • Mfr. Part No. CCR-122
Each
SGD140.83(exc. GST)
Sifam 21.5mm Black Potentiometer Knob for 6.35mm Shaft Splined, S211 250BK
  • RS Stock No. 111-0704
  • Mfr. Part No. S211 250BK
Each (In a Pack of 10)
SGD7.48(exc. GST)
Murata 2.2 mH ±10% Leaded Inductor, 500mA Idc, 2Ω Rdc, 1900R
  • RS Stock No. 715-7245P
  • Mfr. Part No. 19R225C
Each (Supplied in a Bag)
SGD2.21(exc. GST)
Vishay, 27kΩ 600W Thick Film Chassis Mount Resistor LPS0600L2702KB ±10%
  • RS Stock No. 826-6734
  • Mfr. Part No. LPS0600L2702KB
Each
SGD134.69(exc. GST)
RS PRO 10000μF Aluminium Electrolytic Capacitor 25V dc, Radial, Through Hole
  • RS Stock No. 711-1214
Each (In a Pack of 2)
SGD3.525(exc. GST)
RS PRO 120Ω Carbon Film Resistor 2W ±5%
  • RS Stock No. 707-8836
Each (In a Pack of 10)
SGD0.328(exc. GST)
EPCOS B32332 Polypropylene Film Capacitor, 450V ac, ±5%, 25μF, Stud Mount
  • RS Stock No. 769-4289
  • Mfr. Part No. B32332I6256J080
Each
SGD23.13(exc. GST)
Results per page
1
2
3
7249

Guides & Articles

Article image
Capacitors Guide
In our comprehensive Capacitors Guide we look at MLCC's and the alternatives available
Read more
Article image
Variable Resistors Guide
Everything you need to know about variable resistors
Read more

Related links