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
Capacitors
Crystals, Oscillators & Resonators
EMI Filters & Protection
Fixed Resistors
Inductors
Passive Components Kits
Rotary Encoders
Sounder, Buzzer & Microphone Components
Surge Protection Components
Variable Resistors

163920 Products showing for Passive Components

Sort By
Temporarily out of stock
Panasonic ERJ H2R 470 Ω, 0402 Thick Film Surface Mount Resistor ±1 % 0.1 W - ERJH2RF4700X
  • RS Stock No. 228-4646
  • Mfr. Part No. ERJH2RF4700X
Subtotal (1 reel of 10000 units)
SGD560.00(exc. GST)
SGD0.056/unit
In Stock
TE Connectivity 4.02 kΩ Metal Film Resistor 0.25 W 0.1 % YR1B4K02cc
  • RS Stock No. 754-5853
  • Mfr. Part No. YR1B4K02cc
Subtotal (1 pack of 5 units)
SGD6.12(exc. GST)
SGD1.224/unit
Temporarily out of stock
Panasonic ERJPC3 287 kΩ, 0603 Thick Film Resistor Thick Film Resistor ±0.5 % Surface 0.2 W - ERJPC3D2873V
  • RS Stock No. 789-416
  • Mfr. Part No. ERJPC3D2873V
Subtotal (1 tape of 10 units)
SGD0.73(exc. GST)
SGD0.073/unit
In Stock
Panasonic ERJUP6 390 kΩ, 0805 Surface Mount Resistor ±1 % 0.5 W - ERJUP6F3903V
  • RS Stock No. 243-2315
  • Mfr. Part No. ERJUP6F3903V
Subtotal (1 reel of 5000 units)
SGD270.00(exc. GST)
SGD0.054/unit
Currently unavailable
Nichicon 330 μF Capacitor 200V dc, Snap-in
  • RS Stock No. 714-9225P
  • Mfr. Part No. LGR2D331MELA25
Subtotal 1 unit (supplied in a bag)
SGD5.25(exc. GST)
SGD5.25/unit
In Stock
ROHM MCR 1.2 kΩ, 0603 Thick Film Surface Mount Resistor ±1 % 0.1 W
  • RS Stock No. 901-3557P
  • Mfr. Part No. MCR03EZPFX1201
Subtotal 100 units (supplied on a continuous strip)
SGD1.00(exc. GST)
SGD0.01/unit
In Stock
Panasonic ERJ B1 50 mΩ, 1020 Thick Film Resistor ±1 % 1 W - ERJB1CFR05U
  • RS Stock No. 228-0633
  • Mfr. Part No. ERJB1CFR05U
Subtotal (1 reel of 5000 units)
SGD3,840.00(exc. GST)
SGD0.768/unit
Last RS stock
Murata, NFE31P, Signal Filter, 25V dc, 6 A, 1206, Surface, Solder Pad 1.6 mm 3.2 mm, 1.6 mm
  • RS Stock No. 725-7360P
  • Mfr. Part No. NFE31PT152Z1E9L
Subtotal 10 units (supplied on a continuous strip)
SGD5.89(exc. GST)
SGD0.589/unit
Temporarily out of stock
Nichicon 3300 μF Capacitor 450V dc, Screw - LQR2W332MSEH
  • RS Stock No. 165-3801
  • Mfr. Part No. LQR2W332MSEH
Subtotal (1 bag of 5 units)
SGD568.15(exc. GST)
SGD113.63/unit
Currently unavailable
TE Connectivity 2.87 kΩ Metal Film Resistor 0.25 W 0.1 H82K87BYA
  • RS Stock No. 164-2065
  • Mfr. Part No. H82K87BYA
Subtotal (1 box of 250 units)
SGD385.25(exc. GST)
SGD1.541/unit
Stocked by manufacturer
Schneider Electric Power Factor Correction Capacitor 20 kvar
  • RS Stock No. 432-704
  • Mfr. Part No. VLVAW0L020A40A
Subtotal (1 unit)
SGD6,902.76(exc. GST)
SGD6,902.76/unit
In Stock
Wurth Elektronik 15 nF Surface Mount Ceramic Capacitor, 50V, ±5 %
  • RS Stock No. 486-244
  • Mfr. Part No. 885012009024
Subtotal (1 unit)
SGD7.46(exc. GST)
SGD7.46/unit
Temporarily out of stock
Murata 4.7 μF Multilayer Ceramic Capacitor, 50V dc, ±10 %, Through Hole Radial
  • RS Stock No. 150-3989
  • Mfr. Part No. RDEC71H475K2M1H03A
Subtotal (1 box of 2000 units)
SGD688.00(exc. GST)
SGD0.344/unit
Currently unavailable
Same Sky 88 dB Surface Buzzer Internal Magnetic Buzzer 7.1 mm 5 V dc Min 12.8 mm 7V dc Max
  • RS Stock No. 259-6191
  • Mfr. Part No. CMI-1265-88-SMT-TR
Subtotal (1 reel of 450 units)
SGD837.00(exc. GST)
SGD1.86/unit
In Stock
RS PRO 3300 μF Capacitor 16V dc, Radial, Through Hole Radial Lead
  • RS Stock No. 170-1185
Subtotal (1 bag of 250 units)
SGD156.50(exc. GST)
SGD0.626/unit
Currently unavailable
Panasonic 680 μF Capacitor 35V dc, Through Hole - EEUFC1V681L Radial Lead
  • RS Stock No. 107-1092
  • Mfr. Part No. EEUFC1V681L
Subtotal (1 bag of 100 units)
SGD85.60(exc. GST)
SGD0.856/unit
In Stock
Wurth Elektronik 2 mH Nano Crystal Common Mode Choke, Max SRF:300 MHz, 10 A Idc, 6 mΩ Rdc, WE-CMBNC
  • RS Stock No. 163-5541
  • Mfr. Part No. 7448031002
Subtotal (1 box of 90 units)
SGD1,123.20(exc. GST)
SGD12.48/unit
Temporarily out of stock
IQD 1.8432 MHz Crystal Unit ±20 ppm HC-49 2-Pin 13.46 mm 11.05 mm 4.65mm
  • RS Stock No. 146-3960
  • Mfr. Part No. LFXTAL003033B
Subtotal (1 bag of 100 units)
SGD180.50(exc. GST)
SGD1.805/unit
Temporarily out of stock
ROHM ESR10 620 Ω, 0805 Thick Film Resistor ±1 % 0.4 W
  • RS Stock No. 262-9371P
  • Mfr. Part No. ESR10EZPF6200
Subtotal 100 units (supplied on a continuous strip)
SGD7.80(exc. GST)
SGD0.078/unit
In Stock
RS PRO 70 dB PCB Buzzer Internal Magnetic Buzzer Component 5.5 mm 1 V ac Min 3V ac Max
  • RS Stock No. 136-7926
Subtotal (1 pack of 5 units)
SGD9.04(exc. GST)
SGD1.808/unit
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