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

143959 Products showing for Passive Components

4 / 999+
RS PRO 82dB Slow Pulse Piezo Buzzer, 42.5 (Dia.) x 42mm, 60V ac/dc Min, 250V ac/dc Max
  • RS Stock No. 181-2688
Each (In a Box of 160)
MYR42.966
EPCOS, Standard Metal Oxide Varistor 410pF 100A, Clamping 1500V, Varistor 910V
  • RS Stock No. 289-7351P
  • Mfr. Part No. B72220S0551K101
Each (Supplied in a Bag)
MYR5.796
Bourns, 1500 Surge Protector 360 V dc Maximum Voltage Rating 3kA Maximum Surge Current Grounded Ethernet Protector
  • RS Stock No. 785-8231
  • Mfr. Part No. 1500-2S-W
Each
MYR1,015.78
Bourns 5V dc 128 Pulse Optical Encoder with a 6.35 mm Round Shaft, Bracket Mount
  • RS Stock No. 263-2889P
  • Mfr. Part No. ENA1J-B28-L00128L
Each (Supplied in a Bag)
MYR229.83
Schaffner FN 355 Series 20A 440 V ac 400Hz Flange Mount RFI Filter, with Screw Terminals 3 Phase
  • RS Stock No. 219-3211
  • Mfr. Part No. FN355-20-03
Each
MYR332.10
Bourns 24 Pulse Incremental Mechanical Rotary Encoder with a 6 mm Flat Shaft (Not Indexed), Through Hole
  • RS Stock No. 737-7767P
  • Mfr. Part No. PEC11R-4220F-S0024
Each (Supplied in a Box)
MYR7.59
Abracon, 12.288MHz Clock Oscillator Crystal Oscillator HCMOS, TTL SMD ASFL1-12.288MHZ-EC-T
  • RS Stock No. 240-3583P
  • Mfr. Part No. ASFL1-12.288MHZ-EC-T
Each (Supplied on a Reel)
MYR8.29
EPCOS B32923 Polypropylene Film Capacitor, 305V ac, ±20%, 1μF, Through Hole
  • RS Stock No. 194-3440
  • Mfr. Part No. B32923H3105M000
Each (In a Box of 450)
MYR3.62
EPCOS Washer for use with Capacitor
  • RS Stock No. 185-3875
  • Mfr. Part No. B44020J0500B000
Each (In a Bag of 32)
MYR17.119
Fair-Rite Ferrite Core
  • RS Stock No. 466-9164
  • Mfr. Part No. 0431177081
Each
MYR71.92
Broadcom 500 Pulse Code Wheel with a 4 mm, Through Hole
  • RS Stock No. 796-7830
  • Mfr. Part No. HEDS-5120#A11
Each
MYR93.95
Micro Crystal 32.768kHz Crystal ±20ppm SMD 2-Pin 3.2 x 1.5 x 0.65mm
  • RS Stock No. 729-3293
  • Mfr. Part No. CM7V-T1A 32.768kHz 12.5pF +/-20ppm TB QA
Each (In a Bag of 5)
MYR6.774
RS PRO 22mm Black Potentiometer Knob for 6mm Shaft
  • RS Stock No. 467-2508
Each
MYR44.24
TE Connectivity 12Ω Power Film Through Hole Fixed Resistor 100W 1% MPT100C12RF
  • RS Stock No. 195-5134
  • Mfr. Part No. MPT100C12RF
Each
MYR89.76
Wurth Elektronik WE-WPCC Wireless Charging Coil Receiver 3A, 14.3 μH
  • RS Stock No. 112-0097
  • Mfr. Part No. 760308103215
Each
MYR36.68
Amphenol Advanced Sensors PTC Thermistor, PTC Type
  • RS Stock No. 257-9571P
  • Mfr. Part No. YS4020
Each (Supplied in a Bag)
MYR17.685
EPCOS B32652 Polypropylene Film Capacitor, 400V dc, 5%, 220nF, Through Hole
  • RS Stock No. 194-3595
  • Mfr. Part No. B32652A4224J000
Each (In a Pack of 20)
MYR2.499
Roxburgh EMC 7.5 mH Ferrite Common Mode Choke, Max SRF:440Hz, 2A Idc, 160mΩ Rdc 250 V ac, CMV
  • RS Stock No. 288-137
  • Mfr. Part No. CMV20
Each
MYR26.72
Vishay, IHLP, EK Shielded Wire-wound SMD Inductor with a Metal Composite Core, 820 pH ±20% Shielded 9.3A Idc
  • RS Stock No. 564-990
  • Mfr. Part No. IHLP2020CZEKR82M01
Each (On a Reel of 2500)
MYR2.142
Broadcom 5V dc Optical Encoder Hollow Shaft
  • RS Stock No. 796-7852
  • Mfr. Part No. HEDS-5600#A06
Each
MYR287.85
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