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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164393 Products showing for Passive Components

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Wurth Elektronik 2 mH 600 mA Common Mode Filter 0.42 Ω 80V
  • RS Stock No. 124-1876
  • Mfr. Part No. 744221
Subtotal (1 pack of 5 units)
HK$97.20
HK$19.44/unit
In Stock
Vishay CRCW 180 Ω, 0603 Thick Film Surface Mount Resistor ±1 % 0.1 W - CRCW0603180RFKEA
  • RS Stock No. 678-9841
  • Mfr. Part No. CRCW0603180RFKEA
Subtotal (1 pack of 50 units)
HK$7.00
HK$0.14/unit
In Stock
Panasonic ERJ 12 kΩ, 0402 Thick Film Surface Mount Resistor ±1 % 0.1 W - ERJ2RKF1202X
  • RS Stock No. 176-3554
  • Mfr. Part No. ERJ2RKF1202X
Subtotal (1 reel of 1000 units)
HK$70.00
HK$0.07/unit
Currently unavailable
TE Connectivity 3504 100 Ω, 2512 Thin Film Surface Mount Fixed Resistor ±1 % Surface 6 W - 3504G3A100RFTDF
  • RS Stock No. 253-0001
  • Mfr. Part No. 3504G3A100RFTDF
Subtotal (1 reel of 1000 units)
HK$30,177.00
HK$30.177/unit
Temporarily out of stock
TDK 100 nF Multilayer Ceramic Capacitor, 50V dc, ±10 %, Surface
  • RS Stock No. 242-7314
  • Mfr. Part No. C1005X7R1H104K050BB
Subtotal (1 reel of 10000 units)
HK$860.00
HK$0.086/unit
In Stock
RS Better World
Vishay MMA0204 2.2 mΩ, 0204 Thin Film IDC Connector Resistor ±1 % 0.4 W - MMA02040C2204FB300
  • RS Stock No. 180-3694
  • Mfr. Part No. MMA02040C2204FB300
Subtotal (1 reel of 500 units)
HK$156.00
HK$0.312/unit
Currently unavailable
TE Connectivity 2.7 Ω Power Film Through Hole Fixed Resistor 100 W 1 % MPT100T2R7F
  • RS Stock No. 195-5115
  • Mfr. Part No. MPT100T2R7F
Subtotal (1 unit)
HK$145.00
HK$145.00/unit
Last RS stock
Panasonic ERJ 24 Ω, 0805 Thick Film Surface Mount Resistor ±0.5 % Surface 0.1 W - ERJ6RED24R0V
  • RS Stock No. 810-1984
  • Mfr. Part No. ERJ6RED24R0V
Subtotal (1 bag of 100 units)
HK$46.80
HK$0.468/unit
Temporarily out of stock
TE Connectivity, Corcom K 20 A 250V ac 50Hz, 60 Hz, Flange RFI Filter, Fast-On 1 Phase
  • RS Stock No. 186-3552
  • Mfr. Part No. 20VK1
Subtotal (1 box of 8 units)
HK$3,056.60
HK$382.075/unit
Currently unavailable
Vishay MKT 1822 Film Capacitor, 200V ac, 470 nF, Through Hole
  • RS Stock No. 117-779
  • Mfr. Part No. MKT1822-447/405
Subtotal (1 pack of 10 units)
HK$151.50
HK$15.15/unit
Last RS stock
Vishay 47 μF Capacitor 25V dc, SMD Surface Mount - MAL215376479E3
  • RS Stock No. 280-0411P
  • Mfr. Part No. MAL215376479E3
Subtotal 10 units (supplied on a continuous strip)
HK$124.30
HK$12.43/unit
Temporarily out of stock
Wurth Elektronik Shielding Strip of Polyurethane Foam, Nickel, Copper Layered Metallised Fibre With Tape 1 m x 10mm x 5
  • RS Stock No. 773-7207
  • Mfr. Part No. 3021005
Subtotal (1 unit)
HK$95.10
HK$95.10/unit
In Stock
TE Connectivity 11 kΩ Metal Film Resistor 0.25 W 0.1 % YR1B11KCC
  • RS Stock No. 755-0798
  • Mfr. Part No. YR1B11KCC
Subtotal (1 pack of 5 units)
HK$32.40
HK$6.48/unit
In Stock
RS PRO 85 dB Through Hole Continuous External Magnetic Buzzer Component 9 mm 3 V ac Min 8V ac Max
  • RS Stock No. 780-0712
Subtotal (1 bag of 5 units)
HK$57.50
HK$11.50/unit
In Stock
KOA 2.7 kΩ Metal Film Resistor 0.5 W 1 % MFS1/2CCT52A2701F
  • RS Stock No. 124-2866
  • Mfr. Part No. MFS1/2CCT52A2701F
Subtotal (1 bag of 50 units)
HK$174.10
HK$3.482/unit
In Stock
Bourns, GMOV Varistor 4 pF 6000 A, Clamping 875 V, Varistor 130 V dc, 170 V dc, Disc
  • RS Stock No. 186-2116
  • Mfr. Part No. GMOV-14D131K
Subtotal (1 pack of 5 units)
HK$68.50
HK$13.70/unit
Currently unavailable
Vishay 62 Ω Thin Film Resistor 0.6 W 1 % MBB02070C6209FCT00
  • RS Stock No. 506-4762
  • Mfr. Part No. MBB02070C6209FCT00
Subtotal (1 pack of 50 units)
HK$26.10
HK$0.522/unit
Last RS stock
Vishay 4.7 μF Capacitor 50V dc, SMD Surface Mount - MAL215371478E3
  • RS Stock No. 280-0393
  • Mfr. Part No. MAL215371478E3
Subtotal (1 reel of 1000 units)
HK$2,722.00
HK$2.722/unit
Currently unavailable
Vishay CRCW 21 kΩ, 0805 Thick Film Surface Mount Resistor ±1 % Surface 0.13 W - CRCW080521K0FKEA
  • RS Stock No. 679-1086
  • Mfr. Part No. CRCW080521K0FKEA
Subtotal (1 pack of 50 units)
HK$10.40
HK$0.208/unit
Temporarily out of stock
Taiyo Yuden 0.01 μF Multilayer Ceramic Capacitor, 50V dc, ±10 %
  • RS Stock No. 247-0004
  • Mfr. Part No. MCASU168SB7103KTNA01
Subtotal (1 pack of 200 units)
HK$68.20
HK$0.341/unit
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