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

164393 Products showing for Passive Components

Sort By
20 of 999+
In Stock
Sifam 15.5 mm Knob Diameter Black Potentiometer Knob for 4 mm Shaft Circular, S150004-BLK
  • RS Stock No. 225-697
  • Mfr. Part No. S150004-BLK
Subtotal (1 pack of 10 units)
HK$345.30
HK$34.53/unit
In Stock
Vishay 10 nF Multilayer Ceramic Capacitor, 50V dc, ±10 %, Surface
  • RS Stock No. 272-7934P
  • Mfr. Part No. VJ0805Y103KXACW1BC
Subtotal 200 units (supplied on a reel)
HK$93.20
HK$0.466/unit
Limited stock
Sonitron Piezoelectric Miniature Speaker, 100 dB 500 Hz, 66 nF 8 kHz, 5.8 mm Lead Length 60 V Pk-Pk 9.7 mm 33.5mm 33.5
  • RS Stock No. 294-5668
  • Mfr. Part No. SCS-32-P10
Subtotal (1 unit)
HK$74.10
HK$74.10/unit
In Stock
Arcol Ohmite HS50E3 1K F M145, 1 kΩ 50 W Wirewound Chassis Mount Resistor ±1 %
  • RS Stock No. 195-4105
  • Mfr. Part No. HS50E3 1K F M145
Subtotal (1 unit)
HK$130.30
HK$130.30/unit
In Stock
Bourns, 1977 Coaxial Surge Protection 600V dc Maximum Voltage Rating 20 kA Maximum Surge Current Coaxial Surge Protector
  • RS Stock No. 785-8222
  • Mfr. Part No. 1977-50-A01
Subtotal (1 unit)
HK$1,653.00
HK$1,653.00/unit
In Stock
TE Connectivity HSA5012RJ, 12 Ω 50 W Wirewound Chassis Mount Resistor ±5 %
  • RS Stock No. 720-5237
  • Mfr. Part No. HSA5012RJ
Subtotal (1 unit)
HK$57.70
HK$57.70/unit
Currently unavailable
Yageo 56 Ω Cement Through Hole Fixed Resistor 5 W 5 %
  • RS Stock No. 199-1757
  • Mfr. Part No. SQP500JB-56R
Subtotal (1 pack of 5 units)
HK$24.90
HK$4.98/unit
In Stock
Bourns, SRR0745A, 745 Shielded Power Inductor with a Ferrite Core, 1 mH ±20 % 200 mA Idc
  • RS Stock No. 466-155
  • Mfr. Part No. SRR0745A-102M
Subtotal (1 bag of 2 units)
HK$12.00
HK$6.00/unit
In Stock
RS PRO Film Capacitor, ±10 %, 5 μF 440V ac, Screw
  • RS Stock No. 196-4551
Subtotal (1 unit)
HK$101.80
HK$101.80/unit
In Stock
Panasonic 3.3 μF Capacitor 50V dc, Radial - EEUHD1H3R3 Radial Lead
  • RS Stock No. 744-2123
  • Mfr. Part No. EEUHD1H3R3
Subtotal (1 pack of 10 units)
HK$29.60
HK$2.96/unit
In Stock
TDK Thermistor, NTC Type 2.2 Ω 7 mm 11.5 mm 7 mm
  • RS Stock No. 216-1416
  • Mfr. Part No. B57237S0229M000
Subtotal (1 unit)
HK$9.30
HK$9.30/unit
Temporarily out of stock
Fair-Rite 44 piece Ferrite Kit
  • RS Stock No. 273-1374
  • Mfr. Part No. 0199000049
Subtotal (1 unit)
HK$1,169.30
HK$1,169.30/unit
In Stock
CTi LTEB/SMA Stubby Multi-Band Antenna with SMA Connector, 700 MHz, 2.7 GHz, 2G (GSM/GPRS), 3G (UTMS), 4G (LTE)
  • RS Stock No. 205-3341
  • Mfr. Part No. LTEB/SMA
Subtotal (1 pack of 2 units)
HK$223.30
HK$111.65/unit
In Stock
Broadcom 3.3V dc, 5 V dc Optical Encoder, Surface
  • RS Stock No. 220-7147
  • Mfr. Part No. AEDR-9830A-102
Subtotal (1 reel of 100 units)
HK$24,093.50
HK$240.935/unit
Temporarily out of stock
10 kΩ, Through Hole Trimmer Potentiometer, Pin 0.5 W Side Adjust TE Connectivity, 409
  • RS Stock No. 652-4697
  • Mfr. Part No. 409VA103M
Subtotal (1 unit)
HK$14.50
HK$14.50/unit
In Stock
Alps Alpine RK163 100 kΩ Rotary Carbon Film Potentiometer 1-Turns 1-Gang Panel Mount, Through Hole
  • RS Stock No. 249-9222
  • Mfr. Part No. RK1631110TV7
Subtotal (1 unit)
HK$47.30
HK$47.30/unit
In Stock
UVOX FS-018-086-SA-T Shielding Strip of Beryllium Copper Alloy With Self-Adhesive 500 mm x 8.6mm x 1.8 mm
  • RS Stock No. 772-0265
  • Mfr. Part No. FS-018-086-SA-T
Subtotal (1 unit)
HK$82.00
HK$82.00/unit
In Stock
RS PRO Single Layer Ceramic Capacitor 1 nF 3kV dc ±10 % Y5P Dielectric, Through Hole 85 °C Max Op. Temp.
  • RS Stock No. 180-5132
Subtotal (1 pack of 100 units)
HK$97.20
HK$0.972/unit
In Stock
Linx Magnetic Remote Antenna Base Magnetic Antenna Base Silicone Gasket Provided to Aid Seal to Antenna, Integrated
  • RS Stock No. 267-3003
  • Mfr. Part No. ANT-MAG-RPSF-SMAM-1
Subtotal (1 unit)
HK$163.00
HK$163.00/unit
In Stock
Bourns 3540 500 Ω Rotary Potentiometer 10-Turns 1-Gang Panel Mount, 3540S-1-501L
  • RS Stock No. 522-3012
  • Mfr. Part No. 3540S-1-501L
Subtotal (1 unit)
HK$251.80
HK$251.80/unit
1
20
8220
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