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.

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Crystals, Oscillators & Resonators
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EMI Filters & Protection
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Fixed Resistors
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Inductors
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Passive Components Kits
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Sounder, Buzzer & Microphone Components
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163824 Products showing for Passive Components

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ROHM ESR18 30 Ω, 1206 Thick Film Surface Mount Resistor ±5 % 0.5 W - ESR18EZPJ300
  • RS Stock No. 264-2021
  • Mfr. Part No. ESR18EZPJ300
Subtotal (1 reel of 5000 units)
SGD185.00(exc. GST)
SGD0.037/unit
Last RS stock
TE Connectivity 3502 13 Ω, 2010 Thick Film Surface Mount Resistor ±1 % Surface 2 W
  • RS Stock No. 186-6878P
  • Mfr. Part No. 350213RFT
Subtotal 10 units (supplied on a continuous strip)
SGD6.32(exc. GST)
SGD0.632/unit
Temporarily out of stock
TDK 4.4 mH 0.6 A Common Mode Choke 400 mΩ 250V
  • RS Stock No. 246-9851
  • Mfr. Part No. B82720S2601N040
Subtotal (1 reel of 250 units)
SGD508.25(exc. GST)
SGD2.033/unit
Currently unavailable
TE Connectivity 3502 75 kΩ, 2010 Thick Film Surface Mount Resistor ±1 % Surface 2 W
  • RS Stock No. 186-7023P
  • Mfr. Part No. 350275KFT
Subtotal 10 units (supplied on a continuous strip)
SGD6.27(exc. GST)
SGD0.627/unit
Last RS stock
TE Connectivity 3502 3.3 mΩ, 2010 Thick Film Surface Mount Resistor ±1 % Surface 2 W - 35023M3FT
  • RS Stock No. 186-7037
  • Mfr. Part No. 35023M3FT
Subtotal (1 tape of 10 units)
SGD9.28(exc. GST)
SGD0.928/unit
Last RS stock
TE Connectivity 3502 620 Ω, 2010 Thick Film Surface Mount Resistor ±1 % Surface 2 W
  • RS Stock No. 186-6884P
  • Mfr. Part No. 3502620RFT
Subtotal 10 units (supplied on a continuous strip)
SGD7.62(exc. GST)
SGD0.762/unit
Temporarily out of stock
KEMET 4.7 μF MnO2 Tantalum Capacitor 35V dc, Through Hole, T350 Series
  • RS Stock No. 144-7467
  • Mfr. Part No. T350E475K035AT
Subtotal (1 pack of 5 units)
SGD30.20(exc. GST)
SGD6.04/unit
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Wurth Elektronik, WE-CHSA, 1212 Shielded Surface Mount Inductor with a Magnetically Shielded rod core Core, 18 μH ±20 %
  • RS Stock No. 245-8600
  • Mfr. Part No. 7843321800
Subtotal (1 unit)
SGD4.83(exc. GST)
SGD4.83/unit
Temporarily out of stock
Bourns, SRP6530A Shielded Wirewound Surface Mount Inductor with a Metal Alloy Powder Core, 3.3 μH 20 % 15.5 A Idc Q:20
  • RS Stock No. 231-7188P
  • Mfr. Part No. SRP6530A-3R3M
Subtotal 5 units (supplied on a continuous strip)
SGD6.56(exc. GST)
SGD1.312/unit
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Panasonic 220 μF Capacitor 25V dc, Surface Solder - EEEHB1E221P
  • RS Stock No. 727-0962
  • Mfr. Part No. EEEHB1E221P
Subtotal (1 pack of 10 units)
SGD8.73(exc. GST)
SGD0.873/unit
In Stock
KEMET 1000 μF MnO2 Tantalum Capacitor 6.3V dc, Surface, T491 Series
  • RS Stock No. 144-7536P
  • Mfr. Part No. T491X108K006AT
Subtotal 2 units (supplied on a continuous strip)
SGD14.52(exc. GST)
SGD7.26/unit
Currently unavailable
TE Connectivity 8.25 kΩ Metal Film Resistor 0.25 W 0.1 % H88K25BYA
  • RS Stock No. 701-7689
  • Mfr. Part No. H88K25BYA
Subtotal (1 pack of 5 units)
SGD11.86(exc. GST)
SGD2.372/unit
In Stock
Yageo RC 470 Ω, 0603 Thick Film Surface Mount Fixed Resistor ±5 % 0.1 W
  • RS Stock No. 242-6816P
  • Mfr. Part No. RC0603JR-07470RL
Subtotal 100 units (supplied on a continuous strip)
SGD0.80(exc. GST)
SGD0.008/unit
Last RS stock
TE Connectivity 100 Ω Metal Oxide Resistor 9 W 5 %
  • RS Stock No. 187-1267
  • Mfr. Part No. ROX9J100R
Subtotal (1 pack of 5 units)
SGD11.60(exc. GST)
SGD2.32/unit
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TDK B32921C Polypropylene Film Capacitor 47 nF 305V ac 305 V dc, Through Hole 2
  • RS Stock No. 241-6622
  • Mfr. Part No. B32921C3473K289
Subtotal (1 reel of 830 units)
SGD210.82(exc. GST)
SGD0.254/unit
Temporarily out of stock
TDK B32021 Polypropylene Film Capacitor 4.7 nF 300V ac 300 V dc, Through Hole 2
  • RS Stock No. 241-6495
  • Mfr. Part No. B32021A3472M189
Subtotal (1 box of 1300 units)
SGD477.10(exc. GST)
SGD0.367/unit
Last RS stock
TE Connectivity 1.47 kΩ Metal Film Resistor 0.25 W 0.1 %
  • RS Stock No. 701-7443P
  • Mfr. Part No. H81K47BYA
Subtotal 5 units (supplied in a bag)
SGD11.65(exc. GST)
SGD2.33/unit
In Stock
TE Connectivity 250 Ω Metal Film Resistor 0.5 W 0.5 %
  • RS Stock No. 137-2745
  • Mfr. Part No. 1-2176163-0
Subtotal (1 unit)
SGD7.44(exc. GST)
SGD7.44/unit
Currently unavailable
RS PRO 19.6 kΩ, 0402 Thick Film Surface Mount Resistor ±1 % 0.06 W
  • RS Stock No. 716-9226
Subtotal (1 reel of 10000 units)
SGD30.00(exc. GST)
SGD0.003/unit
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Wurth Elektronik Openable, Diameter 25 mm Ferrite Sleeve, Apertures: 1 Key 62 mm 55 mm 60 mm
  • RS Stock No. 185-7328
  • Mfr. Part No. 74272251
Subtotal (1 unit)
SGD36.62(exc. GST)
SGD36.62/unit
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