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

158965 Products showing for Passive Components

37 of 999+
In Stock
Nichicon 330 μF Capacitor 400V dc, Snap-in
  • RS Stock No. 844-2853
  • Mfr. Part No. LGU2G331MELA
Subtotal (1 unit)
SGD10.74(exc. GST)
SGD10.74/unit
Temporarily out of stock
Wurth Elektronik 10 μH Manganese Zinc Ferrite Leaded Inductor, Max SRF:17 MHz, 20.6 A Idc, 5 mΩ Rdc, WE-HCFT
  • RS Stock No. 185-7307
  • Mfr. Part No. 7443782012100
Subtotal (1 unit)
SGD7.99(exc. GST)
SGD7.99/unit
Temporarily out of stock
Schurter, FMBC EP 110 A 520V ac 50Hz, 60 Hz, Chassis Mount Power Line Filter 3 Phase
  • RS Stock No. 220-8620
  • Mfr. Part No. 3-123-485
Subtotal (1 unit)
SGD503.88(exc. GST)
SGD503.88/unit
Last RS stock
TE Connectivity 100 kΩ Carbon Film Resistor 2 W 5 % CFR200J100K
  • RS Stock No. 125-1138
  • Mfr. Part No. CFR200J100K
Subtotal (1 bag of 20 units)
SGD5.24(exc. GST)
SGD0.262/unit
In Stock
Murata 4.7 μF Multilayer Ceramic Capacitor, 25V dc, ±20 %, Surface
  • RS Stock No. 884-7276
  • Mfr. Part No. GRM188R61E475ME11D
Subtotal (1 pack of 20 units)
SGD2.32(exc. GST)
SGD0.116/unit
In Stock
Sifam 29.5 mm Knob Diameter Black Potentiometer Knob for 6 mm Shaft Circular, SP291 006 BLACK
  • RS Stock No. 407-2481
  • Mfr. Part No. SP291 006 BLACK
Subtotal (1 pack of 10 units)
SGD105.56(exc. GST)
SGD10.556/unit
Temporarily out of stock
Arcol, 2.2 Ω 150 W Wirewound Chassis Mount Resistor ±5 %
  • RS Stock No. 166-4274
  • Mfr. Part No. HS150 2R2 J
Subtotal (1 box of 30 units)
SGD664.11(exc. GST)
SGD22.137/unit
Temporarily out of stock
Vishay, 1.2 kΩ 25 W Thick Film Chassis Mount Resistor ±5 %
  • RS Stock No. 167-8923
  • Mfr. Part No. RCH25S12000JS06
Subtotal (1 bag of 25 units)
SGD535.20(exc. GST)
SGD21.408/unit
Currently unavailable
Phoenix Contact, VAL Surge Protection Plug 385V ac Maximum Voltage Rating 40 kA Maximum Surge Current Type 1 Surge
  • RS Stock No. 135-587
  • Mfr. Part No. 2910338
Subtotal (1 unit)
SGD101.39(exc. GST)
SGD101.39/unit
In Stock
Wurth Elektronik Ferrite Ring EMI Suppression Toroidal Ferrite 20 mm, For: Multiconductor Wire, Wrapping Cable, Wire,
  • RS Stock No. 124-1552
  • Mfr. Part No. 7427014
Subtotal (1 pack of 5 units)
SGD25.30(exc. GST)
SGD5.06/unit
Temporarily out of stock
Sonitron 100 dBA Panel Mount Multifunctional Internal 26 mm Buzzer 14 cm 5 V Min 35V Max
  • RS Stock No. 172-7043
  • Mfr. Part No. SCR535B
Subtotal (1 unit)
SGD50.23(exc. GST)
SGD50.23/unit
In Stock
10 kΩ, Through Hole Trimmer Potentiometer, Pin 0.5 W Top Adjust Vishay, 64W
  • RS Stock No. 154-2050
  • Mfr. Part No. M64W103KB40
Subtotal (1 unit)
SGD3.92(exc. GST)
SGD3.92/unit
In Stock
Bourns CRE 5 mΩ, 2512 Metal Strip Surface Mount Resistor ±1 % 3 W - CRE2512-FZ-R005E-3
  • RS Stock No. 182-5562
  • Mfr. Part No. CRE2512-FZ-R005E-3
Subtotal (1 tape of 10 units)
SGD8.18(exc. GST)
SGD0.818/unit
Temporarily out of stock
Wurth Elektronik, WE-CAIR, 3168 Unshielded Surface Mount Air Coil Inductor with a Copper Core, 17.5 nH ±5 % 4 A Idc
  • RS Stock No. 163-8192
  • Mfr. Part No. 744914117
Subtotal (1 reel of 500 units)
SGD439.00(exc. GST)
SGD0.878/unit
In Stock
Nichicon 1000 μF Capacitor 50V dc, Radial, Through Hole - UPS1H102MHD Radial Lead
  • RS Stock No. 519-4374
  • Mfr. Part No. UPS1H102MHD
Subtotal (1 pack of 5 units)
SGD7.60(exc. GST)
SGD1.52/unit
In Stock
TDK B32922C Film Capacitor 470 nF 305V ac 630 V dc, Through Hole 2
  • RS Stock No. 882-9480P
  • Mfr. Part No. B32922C3474M000
Subtotal 10 units (supplied in a box)
SGD6.78(exc. GST)
SGD0.678/unit
In Stock
250 Ω, Through Hole Trimmer Potentiometer, Solder Pin 0.5 W Top Adjust Bourns, 3386
  • RS Stock No. 785-9528
  • Mfr. Part No. 3386P-1-251LF
Subtotal (1 unit)
SGD2.24(exc. GST)
SGD2.24/unit
Limited stock
Panasonic ECWF Film Capacitor, ±5 %, 1.5 μF 400 V dc 400V ac, Through Hole
  • RS Stock No. 476-5739
  • Mfr. Part No. ECWF4155JB
Subtotal (1 pack of 5 units)
SGD19.24(exc. GST)
SGD3.848/unit
In Stock
Murata 10 μF Multilayer Ceramic Capacitor, 50V dc, ±20 %, Through Hole Solder
  • RS Stock No. 811-8367
  • Mfr. Part No. RCER71H106MWM1H03A
Subtotal (1 pack of 5 units)
SGD12.78(exc. GST)
SGD2.556/unit
Last RS stock
Nichicon 4700 μF Capacitor 100V dc, Snap-in
  • RS Stock No. 846-7133
  • Mfr. Part No. LLS2A472MELB
Subtotal (1 unit)
SGD10.44(exc. GST)
SGD10.44/unit
1
37
7949
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