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

163771 Products showing for Passive Components

Sort By
7553 of 999+
Currently unavailable
ROHM UCR 180 mΩ, 0201 Thick Film Surface Mount Fixed Resistor 1 % 0.1 W
  • RS Stock No. 261-9953P
  • Mfr. Part No. UCR006YVPFLR180
Subtotal (500 units, supplied on a reel)
SGD122.50(exc. GST)
SGD0.245/unit
Temporarily out of stock
TDK 100 pF Multilayer Ceramic Capacitor, 100V dc, ±5 %, Surface
  • RS Stock No. 179-5067
  • Mfr. Part No. C1005C0G2A101J050BA
Subtotal (10000 units, on reels of 10000)
SGD240.00(exc. GST)
SGD0.024/unit
Temporarily out of stock
Wurth Elektronik, WE-PMCI, 1210 Shielded Multilayer Surface Mount Inductor with a Ferrite Core, 1 μH Moulded ±15 % 3 A
  • RS Stock No. 163-8259
  • Mfr. Part No. 74479299210
Subtotal (3000 units, on reels of 3000)
SGD2,940.00(exc. GST)
SGD0.98/unit
In Stock
Bourns, CAY16 1 kΩ 5 % ISOL Resistor Array, 4 Resistors, 0.25 W total, 1206, Convex
  • RS Stock No. 167-4621
  • Mfr. Part No. CAY16-102J4LF
Subtotal (5000 units, on reels of 5000)
SGD110.00(exc. GST)
SGD0.022/unit
Temporarily out of stock
KEMET 33 μF MnO2 Tantalum Capacitor 25V dc, Surface, T491 Series
  • RS Stock No. 173-1821
  • Mfr. Part No. T491X336K025AT
Subtotal (500 units, on reels of 500)
SGD934.50(exc. GST)
SGD1.869/unit
Temporarily out of stock
Vishay Single Layer Ceramic Capacitor 150 pF 300V ac ±10 % Y5S Dielectric, VY2, Through Hole 125 °C Max Op. Temp.
  • RS Stock No. 173-1270
  • Mfr. Part No. VY2151K29Y5SS6TV5
Subtotal (1000 units, on reels of 1000)
SGD185.00(exc. GST)
SGD0.185/unit
Currently unavailable
KEMET 12000 μF Capacitor 63V dc, Snap-in - ALC80A123DF063
  • RS Stock No. 185-8586
  • Mfr. Part No. ALC80A123DF063
Subtotal (100 units, in trays of 100)
SGD1,167.00(exc. GST)
SGD11.67/unit
In Stock
Vishay MMA0204 47 kΩ, 0204 Thin Film Surface Mount Resistor ±1 % 0.25 W - MMA02040C4702FB300
  • RS Stock No. 678-7429
  • Mfr. Part No. MMA02040C4702FB300
Subtotal (25 units, in packs of 25)
SGD1.675(exc. GST)
SGD0.067/unit
In Stock
Wurth Elektronik 1500 μF Capacitor 10V dc, Radial, Through Hole Radial Lead
  • RS Stock No. 840-0360
  • Mfr. Part No. 860080275018
Subtotal (5 units, in bags of 5)
SGD4.89(exc. GST)
SGD0.978/unit
In Stock
Panasonic 150 μF Aluminium Polymer Capacitor 35V dc, Surface
  • RS Stock No. 758-1070P
  • Mfr. Part No. EEHZC1V151P
Subtotal (2 units, supplied on a continuous strip)
SGD2.99(exc. GST)
SGD1.495/unit
In Stock
Bourns 100 μH Ferrite Radial Inductor, Max SRF:3.7 MHz, Q:20, 910 mA Idc, 280 mΩ Rdc, RL622
  • RS Stock No. 736-1153P
  • Mfr. Part No. RL622-101K-RC
Subtotal (10 units, supplied in a bag)
SGD10.30(exc. GST)
SGD1.03/unit
Temporarily out of stock
Vishay MMA 100 Ω, 0204 Thick Film Thick Film Resistor ±0.1 % Surface Mount 0.25 W - MMA02040E1000BB300
  • RS Stock No. 782-958
  • Mfr. Part No. MMA02040E1000BB300
Subtotal (10 units, on tapes of 10)
SGD8.49(exc. GST)
SGD0.849/unit
In Stock
Nichicon 120 μF Capacitor 400V dc, Snap-in
  • RS Stock No. 752-9527P
  • Mfr. Part No. LGJ2G121MELB20
Subtotal (1 unit, supplied in a bag)
SGD6.66(exc. GST)
SGD6.66/unit
In Stock
Bourns, 4600X 100 kΩ 2 % ISOL Resistor Array, 4 Resistors, 1 W total, SIP, Solder
  • RS Stock No. 167-3289
  • Mfr. Part No. 4608X-102-104LF
Subtotal (200 units, in bags of 200)
SGD34.80(exc. GST)
SGD0.174/unit
In Stock
Wurth Elektronik WRIS-RSKS 12.7 kΩ, 0402 Thick Film Surface Mount Resistor ±1 % Surface 0.1 W - 560112110125
  • RS Stock No. 427-299
  • Mfr. Part No. 560112110125
Subtotal (10 units, on tapes of 10)
SGD0.77(exc. GST)
SGD0.077/unit
In Stock
Yageo PU 0.5 mΩ, 3921 Metal Plate Surface Mount Resistor ±1 % 3 W - PU3921FKNT30U5L
  • RS Stock No. 199-5955
  • Mfr. Part No. PU3921FKNT30U5L
Subtotal (5 units, on tapes of 5)
SGD16.15(exc. GST)
SGD3.23/unit
Temporarily out of stock
Wurth Elektronik, 744383, 6030HT Shielded Surface Mount Inductor with a Magnetic Iron Alloy Core, 2.2 μH Shielded ±20 %
  • RS Stock No. 427-057
  • Mfr. Part No. 74438377022HT
Subtotal (450 units, on reels of 450)
SGD1,488.15(exc. GST)
SGD3.307/unit
Currently unavailable
TE Connectivity CPF 178 Ω, 0805 Thin Film ±0.1 % 0.1 W - CPF0805B178RE1
  • RS Stock No. 123-9809
  • Mfr. Part No. CPF0805B178RE1
Subtotal (1000 units, on reels of 1000)
SGD177.00(exc. GST)
SGD0.177/unit
In Stock
Wurth Elektronik, WE-MK, 0402 Shielded Multilayer Surface Mount Inductor with a Ceramic Core, 6.8 nH Multilayer ±2 % 300
  • RS Stock No. 245-8416
  • Mfr. Part No. 7447840068G
Subtotal (10000 units, on reels of 10000)
SGD480.00(exc. GST)
SGD0.048/unit
Currently unavailable
TE Connectivity 160 kΩ Metal Oxide Resistor 9 W 5 % ROX9J160K
  • RS Stock No. 187-1218
  • Mfr. Part No. ROX9J160K
Subtotal (5 units, in packs of 5)
SGD10.96(exc. GST)
SGD2.192/unit
1
7553
8189
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