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

158018 Products showing for Passive Components

Sort By
1538 of 999+
Last RS stock
Vishay NTC Thermistor, NTC Type 100 kΩ, 0402 0.5 mm 1 mm 0.5 mm
  • RS Stock No. 179-3846P
  • Mfr. Part No. NTCS0402E3104FHT
Subtotal 250 units (supplied on a reel)
SGD109.00(exc. GST)
SGD0.436/unit
In Stock
KOA RN73R 36 kΩ, 1206 Metal Film Surface Mount Resistor ±0.1 % 0.25 W - RN73R2BTTD3602B25
  • RS Stock No. 253-3432
  • Mfr. Part No. RN73R2BTTD3602B25
Subtotal (1 tape of 5 units)
SGD1.75(exc. GST)
SGD0.35/unit
Temporarily out of stock
Wurth Elektronik 560 μF Capacitor 450V dc, Snap-in - 861111486037
  • RS Stock No. 125-0172
  • Mfr. Part No. 861111486037
Subtotal (1 tray of 50 units)
SGD1,369.45(exc. GST)
SGD27.389/unit
In Stock
Panasonic 100 μF Tantalum Capacitor 20V dc, TQC Series
  • RS Stock No. 240-3743
  • Mfr. Part No. 20TQC100MD2
Subtotal (1 tape of 5 units)
SGD19.85(exc. GST)
SGD3.97/unit
In Stock
Wurth Elektronik, 744, 5030 Shielded Inductor with a Iron Core, 1.8 μH Surface Mount ±20% 10.8 mA Idc
  • RS Stock No. 758-331P
  • Mfr. Part No. 74439334018
Subtotal 5 units (supplied on a continuous strip)
SGD15.22(exc. GST)
SGD3.044/unit
Temporarily out of stock
Wurth Elektronik 820 μF Capacitor 63V dc, Radial, Through Hole - 860020780024 Radial Lead
  • RS Stock No. 163-7597
  • Mfr. Part No. 860020780024
Subtotal (1 box of 200 units)
SGD461.80(exc. GST)
SGD2.309/unit
Temporarily out of stock
Vishay CRCW 10 Ω, 2010 Thick Film Surface Mount Resistor ±1 % Surface 0.75 W
  • RS Stock No. 679-2386P
  • Mfr. Part No. CRCW201010R0FKEF
Subtotal 25 units (supplied on a continuous strip)
SGD2.90(exc. GST)
SGD0.116/unit
In Stock
Bourns, SRN5040, 5040 Shielded Wirewound Surface Mount Inductor with a Ferrite Core, 4.7 μH ±20 % 3.1 A Idc Q:15
  • RS Stock No. 813-5674P
  • Mfr. Part No. SRN5040-4R7M
Subtotal 10 units (supplied on a continuous strip)
SGD5.02(exc. GST)
SGD0.502/unit
In Stock
TE Connectivity 50 mΩ Thick Film Resistor 1 W 1 %
  • RS Stock No. 296-0601P
  • Mfr. Part No. HB150MFZRE
Subtotal 1 unit (supplied in a box)
SGD14.70(exc. GST)
SGD14.70/unit
Temporarily out of stock
KOA 2.2 kΩ Ceramic Resistor 2 W 10 % PCF2C222K
  • RS Stock No. 178-6302
  • Mfr. Part No. PCF2C222K
Subtotal (1 bag of 500 units)
SGD422.00(exc. GST)
SGD0.844/unit
Unavailable
Murata 120pF MLCC, 50V dc V, ±5% , SMD
  • RS Stock No. 140-773P
  • Mfr. Part No. GRM1882C1H121JA01D
Subtotal 100 units (supplied on a continuous strip)
SGD2.70(exc. GST)
SGD0.027/unit
In Stock
Vishay 33 μF Capacitor 450V dc, Surface Solder
  • RS Stock No. 196-7766P
  • Mfr. Part No. MAL215299707E3
Subtotal 2 units (supplied on a continuous strip)
SGD13.70(exc. GST)
SGD6.85/unit
Temporarily out of stock
Murata Power Solutions 4.7 μH Leaded Inductor, Max SRF:1 kHz, 1.3 A Idc, 90 mΩ Rdc, 1100R
  • RS Stock No. 106-7942
  • Mfr. Part No. 11R472C
Subtotal (1 bag of 200 units)
SGD94.00(exc. GST)
SGD0.47/unit
Unavailable
Wurth Elektronik 1500μF Electrolytic Aluminium Electrolytic Capacitor 35V dc, Surface Mount - 865060563012
  • RS Stock No. 839-5775P
  • Mfr. Part No. 865060563012
Subtotal 1 unit (supplied on a continuous strip)
SGD4.12(exc. GST)
SGD4.12/unit
Temporarily out of stock
IQD 12 MHz Crystal ±50 ppm Surface Mount 4-Pin 1 mm 5 mm 3.2mm
  • RS Stock No. 173-2853
  • Mfr. Part No. LFXTAL032878
Subtotal (1 tape of 100 units)
SGD105.10(exc. GST)
SGD1.051/unit
Limited stock
Panasonic 3300 μF Capacitor 10V dc, Radial, Through Hole - ECA1AHG332 Radial Lead
  • RS Stock No. 365-4032
  • Mfr. Part No. ECA1AHG332
Subtotal (1 pack of 5 units)
SGD9.30(exc. GST)
SGD1.86/unit
In Stock
Panasonic 100 μF Aluminium Electrolytic Capacitor 16V dc, Surface Solder 1000
  • RS Stock No. 747-9172
  • Mfr. Part No. EEEFP1C101AP
Subtotal (1 reel of 1000 units)
SGD281.00(exc. GST)
SGD0.281/unit
In Stock
KEMET R46 Film Capacitor X2, ±20 %, 150 nF 275 V dc 275V ac, Through Hole
  • RS Stock No. 165-0310
  • Mfr. Part No. R46KN315040H1M
Subtotal (1 pack of 10 units)
SGD5.78(exc. GST)
SGD0.578/unit
In Stock
TDK 220 nF Multilayer Ceramic Capacitor, 630V dc, ±10 %, Surface
  • RS Stock No. 916-3113
  • Mfr. Part No. C5750X7R2J224K230KA
Subtotal (1 pack of 5 units)
SGD7.60(exc. GST)
SGD1.52/unit
In Stock
RS PRO, 220 Ω 500 W Wirewound Chassis Mount Resistor ±5 %
  • RS Stock No. 185-2336
Subtotal (1 unit)
SGD137.72(exc. GST)
SGD137.72/unit
1
1538
7901
Results per page

Guides & Articles

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

Related links