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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EMI Filters & Protection
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Passive Components Kits
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Sounder, Buzzer & Microphone Components
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159956 Products showing for Passive Components

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Currently unavailable
ROHM ESR18 330 kΩ, 1206 Thick Film Surface Mount Resistor ±5 % 0.5 W
  • RS Stock No. 264-2042P
  • Mfr. Part No. ESR18EZPJ334
Subtotal (100 units, supplied on a continuous strip)
MYR17.80
MYR0.178/unit
In Stock
ROHM ESR10 390 Ω, 0805 Thick Film Resistor ±5 % 0.4 W - ESR10EZPJ391
  • RS Stock No. 262-9566
  • Mfr. Part No. ESR10EZPJ391
Subtotal (100 units, on tapes of 100)
MYR12.10
MYR0.121/unit
Temporarily out of stock
Bourns, CVQ Disc Varistor 280 pF 3500 A, Clamping 775 V, Varistor 470 V
  • RS Stock No. 245-9118
  • Mfr. Part No. CVQ300K10BL1
Subtotal (10 units, in packs of 10)
MYR19.40
MYR1.94/unit
In Stock
Wurth Elektronik, WE-KI, 0603 Unshielded Wirewound Surface Mount Inductor with a Ceramic Core, 560 nH ±5 % 120 mA Idc
  • RS Stock No. 245-8326
  • Mfr. Part No. 744761256A
Subtotal (10 units, on tapes of 10)
MYR19.80
MYR1.98/unit
Temporarily out of stock
2 mΩ, Through Hole Trimmer Potentiometer, Pin 0.5 W Top Adjust Nidec Components, CT-94
  • RS Stock No. 244-3656
  • Mfr. Part No. CT-94EW203
Subtotal (5 units, in packs of 5)
MYR47.98
MYR9.596/unit
Last RS stock
TE Connectivity CPF 165 Ω, 0805 Thin Film Surface Mount Resistor ±0.1 % Surface 0.1 W - CPF0805B165RE1
  • RS Stock No. 123-1643
  • Mfr. Part No. CPF0805B165RE1
Subtotal (20 units, in bags of 20)
MYR26.66
MYR1.333/unit
Temporarily out of stock
TDK, CLF-NI-D, 7045 Shielded Wirewound Surface Mount Inductor with a Ferrite Core, 4.7 μH ±30 % 4.1 A Idc
  • RS Stock No. 124-7835P
  • Mfr. Part No. CLF7045NIT-4R7N-D
Subtotal (10 units, supplied on a continuous strip)
MYR30.87
MYR3.087/unit
Temporarily out of stock
TDK, B84113H 16 A 250V ac/dc 50Hz, 60 Hz, Chassis Mount EMC Filter, Lug 1 Phase
  • RS Stock No. 124-5305
  • Mfr. Part No. B84113H0000M116
Subtotal (1 unit)
MYR234.62
MYR234.62/unit
In Stock
20 kΩ, Surface Trimmer Potentiometer, Solder Pin 0.13 W Top Adjust Nidec Components, ST-32
  • RS Stock No. 896-7116
  • Mfr. Part No. ST-32EA 20kR
Subtotal (5 units, in bags of 5)
MYR35.33
MYR7.066/unit
In Stock
Wurth Elektronik, WE-LQSA, 6045 Shielded Power Inductor with a Nickel Zinc, Manganese Zinc Core, 10 μH Semi Shielded ±20
  • RS Stock No. 259-1112
  • Mfr. Part No. 78404064100
Subtotal (1500 units, on reels of 1500)
MYR6,456.00
MYR4.304/unit
Temporarily out of stock
Wurth Elektronik 220 μF Surface Polymer Capacitor, 35V dc
  • RS Stock No. 257-0061
  • Mfr. Part No. 875075661008
Subtotal (400 units, on reels of 400)
MYR8,055.60
MYR20.139/unit
Temporarily out of stock
Abracon, 26MHz Clock Oscillator Crystal Oscillator, ±30 ppm CMOS, 4-Pin ASEAIG5-26.000MHz-X-K-T3
  • RS Stock No. 245-0487
  • Mfr. Part No. ASEAIG5-26.000MHz-X-K-T3
Subtotal (10 units, in packs of 10)
MYR54.98
MYR5.498/unit
In Stock
KEMET 14.2 mH 6 A Common Mode Choke 27.2 mΩ 1000V
  • RS Stock No. 242-7717
  • Mfr. Part No. SCF29XV-060-1R1A036JV
Subtotal (30 units, in trays of 30)
MYR1,785.54
MYR59.518/unit
Currently unavailable
KOA HV73 330 kΩ, 0805 Thick Film Surface Mount Resistor ±1 % 0.25 W - HV732ATTD3303F
  • RS Stock No. 178-6079
  • Mfr. Part No. HV732ATTD3303F
Subtotal (5000 units, on reels of 5000)
MYR1,885.00
MYR0.377/unit
Temporarily out of stock
Wurth Elektronik 175 μH 8 A Common Mode Choke 6 mΩ 1500V
  • RS Stock No. 245-8540
  • Mfr. Part No. 7448228002
Subtotal (90 units, in boxes of 90)
MYR2,492.10
MYR27.69/unit
Temporarily out of stock
Vishay, SGIHLP, Bulk Shielded Inductor with a Shielded Core, 3.3 μH ±20 % 5.3 A Idc
  • RS Stock No. 671-965
  • Mfr. Part No. SGIHLP24DCBR33M81P
Subtotal (5 units, in trays of 5)
MYR3,428.82
MYR685.764/unit
In Stock
Wurth Elektronik 100 pF Multilayer Ceramic Capacitor, 25V dc, ±10 %, Surface
  • RS Stock No. 263-4061P
  • Mfr. Part No. 885012008023
Subtotal (50 units, supplied on a continuous strip)
MYR27.15
MYR0.543/unit
In Stock
Panasonic ERJB 10 mΩ, 0612 Thick Film Resistor ±1 % 0.75 W - ERJB2CFR01V
  • RS Stock No. 228-0844P
  • Mfr. Part No. ERJB2CFR01V
Subtotal (20 units, supplied on a continuous strip)
MYR21.18
MYR1.059/unit
Temporarily out of stock
Vishay, IHLE4040, 4040 Shielded Surface Mount Inductor 47 μH ±20 % 3.1 A Idc
  • RS Stock No. 228-8714
  • Mfr. Part No. IHLE4040DDER470M5A
Subtotal (500 units, on reels of 500)
MYR2,679.00
MYR5.358/unit
Temporarily out of stock
Panasonic ERJ B2 1.2 kΩ, 0612 Thick Film Resistor ±1 % 0.75 W - ERJB2AF122V
  • RS Stock No. 228-0659
  • Mfr. Part No. ERJB2AF122V
Subtotal (5000 units, on reels of 5000)
MYR5,440.00
MYR1.088/unit
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