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

160590 Products showing for Passive Components

Sort By
285 of 999+
In Stock
RS PRO WR 3590 500 Ω Rotary Potentiometer 10-Turns 1-Gang Bush
  • RS Stock No. 278-0307
Subtotal (1 unit)
SGD21.68(exc. GST)
SGD21.68/unit
Temporarily out of stock
Bourns CR0402 22 Ω, 0402 Thick Film Resistor 1 % 63 mW - CR0402-FX-22R0GLF
  • RS Stock No. 247-7004
  • Mfr. Part No. CR0402-FX-22R0GLF
Subtotal (1 reel of 10000 units)
SGD40.00(exc. GST)
SGD0.004/unit
In Stock
Wurth Elektronik 400 μH Nano Crystal Leaded Inductor, Max SRF:300 MHz, 4.5 A Idc, 22 mΩ Rdc 250V ac, WE-CMBNC
  • RS Stock No. 816-4770
  • Mfr. Part No. 7448014501
Subtotal (1 unit)
SGD12.47(exc. GST)
SGD12.47/unit
In Stock
UVOX FS-064-198-SA-T Shielding Strip of Beryllium Copper Alloy With Self-Adhesive 500 mm x 19.8mm x 6.4 mm
  • RS Stock No. 772-0326
  • Mfr. Part No. FS-064-198-SA-T
Subtotal (1 unit)
SGD27.35(exc. GST)
SGD27.35/unit
Last RS stock
Mersen, STPT12 Surge Protector 400V ac Maximum Voltage Rating 12.5 kA Maximum Surge Current Type 2 Arrester, Type 1
  • RS Stock No. 179-3057
  • Mfr. Part No. 83120145 / STPT12-12K275V-4PM
Subtotal (1 unit)
SGD779.43(exc. GST)
SGD779.43/unit
In Stock
Arcol 4.02 kΩ Metal Film Resistor 0.25 W 0.1 % MRA02074K02BTA015
  • RS Stock No. 487-6738
  • Mfr. Part No. MRA02074K02BTA015
Subtotal (1 pack of 5 units)
SGD4.92(exc. GST)
SGD0.984/unit
In Stock
KEMET C27 Film Capacitor, ±5 %, 8 μF 470V ac, Chassis Mount
  • RS Stock No. 172-6776
  • Mfr. Part No. C274AC34800SA0J
Subtotal (1 bag of 86 units)
SGD548.68(exc. GST)
SGD6.38/unit
Currently unavailable
Murata 75 dB Through Hole Sounder External Piezo Buzzer Component 8.2 mm 30V ac Max
  • RS Stock No. 166-9588
  • Mfr. Part No. PKM22EPPH4002-B0
Subtotal (1 bag of 900 units)
SGD381.60(exc. GST)
SGD0.424/unit
In Stock
Werma 60 dB Screw Continuous Internal 61 mm Buzzer 115 V ac Min 230V ac Max
  • RS Stock No. 224-0664
  • Mfr. Part No. 107.000.60
Subtotal (1 unit)
SGD70.76(exc. GST)
SGD70.76/unit
In Stock
KEMET 4700 μF Capacitor 250V dc, Screw
  • RS Stock No. 381-9245P
  • Mfr. Part No. ALS30A472MF250
Subtotal 1 unit (supplied in a box)
SGD69.52(exc. GST)
SGD69.52/unit
In Stock
KOA, MOSX Metal Oxide, Through Hole 47 Resistor Kit 1175, 0.1 Ω → 100 kΩ
  • RS Stock No. 162-2911
  • Mfr. Part No. MOS(X)2C KIT
Subtotal (1 unit)
SGD406.73(exc. GST)
SGD406.73/unit
Currently unavailable
RS PRO, 100 Ω 160 W Wirewound Chassis Mount Resistor ±5 %
  • RS Stock No. 146-8311
Subtotal (1 unit)
SGD46.18(exc. GST)
SGD46.18/unit
In Stock
RS PRO P25 5 kΩ Rotary Potentiometer 1-Turns 1-Gang Panel Mount
  • RS Stock No. 173-0717
Subtotal (1 box of 50 units)
SGD150.55(exc. GST)
SGD3.011/unit
In Stock
Arcol HS300 680R J, 680 Ω 300 W Aluminium Chassis Mount Resistor ±5 %
  • RS Stock No. 136-351
  • Mfr. Part No. HS300 680R J
Subtotal (1 unit)
SGD96.94(exc. GST)
SGD96.94/unit
In Stock
1 kΩ, Through Hole Trimmer Potentiometer, Pin 0.5 W Side Adjust Bourns, 3386
  • RS Stock No. 522-2823
  • Mfr. Part No. 3386W-1-102LF
Subtotal (1 unit)
SGD1.88(exc. GST)
SGD1.88/unit
In Stock
KEMET 150 μF MnO2 Tantalum Capacitor 20V dc, Surface, T491 Series
  • RS Stock No. 144-7450
  • Mfr. Part No. T491X157K020AT
Subtotal (1 pack of 2 units)
SGD7.52(exc. GST)
SGD3.76/unit
In Stock
TE Connectivity 220 Ω Wirewound Resistor 11 W 5 % SBCHE11220RJ
  • RS Stock No. 206-1423
  • Mfr. Part No. SBCHE11220RJ
Subtotal (1 pack of 5 units)
SGD13.16(exc. GST)
SGD2.632/unit
In Stock
Yageo RC 90.9 kΩ, 0603 Thick Film Surface Mount Fixed Resistor ±1 % 0.1 W - RC0603FR-0790K9L
  • RS Stock No. 242-4188P
  • Mfr. Part No. RC0603FR-0790K9L
Subtotal 100 units (supplied on a continuous strip)
SGD0.70(exc. GST)
SGD0.007/unit
In Stock
Wurth Elektronik, WE-HCF SMT, 2920 Shielded Wirewound Surface Mount Inductor with a Manganese Zinc Ferrite Core, 100 μH
  • RS Stock No. 258-5653
  • Mfr. Part No. 74437429203101
Subtotal (1 unit)
SGD12.41(exc. GST)
SGD12.41/unit
In Stock
Vishay MMA0204 12 kΩ, 0204 Thin Film Surface Mount Resistor ±1 % 0.25 W - MMA02040C1202FB300
  • RS Stock No. 678-7191
  • Mfr. Part No. MMA02040C1202FB300
Subtotal (1 pack of 25 units)
SGD1.525(exc. GST)
SGD0.061/unit
1
285
8030
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

Be the first to know about our latest products and offers

Email address

The personal information you provide to us when signing up to this mailing list will be processed in line with the Privacy Policy