Over 800,000 products available

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 be: 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 component that can gather and hold a charge in a way that is similar to how a battery functions. The capacitor is made of 2 close conductors (usually plates) that are separated by a dielectric material. The plates accumulate electric charge when connected to power source. One plate accumulates positive charge and the other plate accumulates 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

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 its 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 device 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, such as windings from a transformer and inductors. It is useful because it offers low electrical conductivity along with high magnetic permeability.

  • Surge Protection Components

Surge protectors are a part of nearly every home and office today. They provide your expensive electronic devices with added protection against surges of electricity, which would ultimately destroy them.

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

169696 Products showing for Passive Components

Sort by
1204 of 999+
In Stock
TDK Single Layer Ceramic Capacitor 1000 pF 3kV dc ±10 %, CK45, Through Hole 105 °C Max Op. Temp.
  • RS Stock No. 253-2815
  • Mfr. Part No. CK45-B3FD102KYNNA
Subtotal (1 tape of 20 units)
£3.24(exc. VAT)
£0.162/unit
Last RS stock
TE Connectivity CPF 39 kΩ, 0805 Thin Film Surface Mount Resistor ±0.1 % Surface 0.1 W - CPF0805B39KE
  • RS Stock No. 666-2641
  • Mfr. Part No. CPF0805B39KE
Subtotal (1 pack of 5 units)
£1.30(exc. VAT)
£0.26/unit
Temporarily out of stock
Welwyn 3.3 kΩ Wirewound Resistor 7 W 5 %
  • RS Stock No. 144-2998
  • Mfr. Part No. W22-3K3JI
Subtotal (1 bag of 5 units)
£8.36(exc. VAT)
£1.672/unit
In Stock
PIHER SENSORS AND CONTROLS S.S.A PC-16 10 kΩ Rotary Linear Potentiometer 1-Turns 1-Gang Panel Mount,
  • RS Stock No. 288-8836
  • Mfr. Part No. PC16SH10CP06-103A2020-CTA
Subtotal (1 unit)
£5.84(exc. VAT)
£5.84/unit
In Stock
Vishay 1000 μF Capacitor 400V dc, Snap-in - MAL229956102E3
  • RS Stock No. 280-0460
  • Mfr. Part No. MAL229956102E3
Subtotal (1 box of 50 units)
£1,163.15(exc. VAT)
£23.263/unit
In Stock
Panasonic ERA 4.7 kΩ, 0402 Thin Film Surface Mount Resistor ±0.1 % Surface 0.06 W - ERA2AEB472X
  • RS Stock No. 782-673P
  • Mfr. Part No. ERA2AEB472X
Subtotal 10 units (supplied on a continuous strip)
£0.36(exc. VAT)
£0.036/unit
In Stock
ROHM ESR03 4.7 mΩ, 0603 Thick Film Surface Mount Resistor ±5 % 0.25 W - ESR03EZPJ475
  • RS Stock No. 262-9894
  • Mfr. Part No. ESR03EZPJ475
Subtotal (1 tape of 100 units)
£2.40(exc. VAT)
£0.024/unit
Last RS stock
Vishay 33 μF Tantalum Tantalum Capacitor 10V dc, Through Hole, 199D Series
  • RS Stock No. 250-9039
  • Mfr. Part No. 199D336X9010D1V1E3
Subtotal (1 bag of 10 units)
£13.50(exc. VAT)
£1.35/unit
In Stock
Wurth Elektronik Ferrite Bead 3.55 mm 3.55 mm (EMI Suppression Axial Ferrite Bead), 142 Ω impedance at 25 MHz, 178 Ω
  • RS Stock No. 332-463
  • Mfr. Part No. 742700381
Subtotal (1 tray of 64 units)
£23.68(exc. VAT)
£0.37/unit
Currently unavailable
Phoenix Contact, CHECKMASTER 2 Lifecheck Surge Tester 230V ac Maximum Voltage Rating
  • RS Stock No. 136-002
  • Mfr. Part No. 2905256
Subtotal (1 unit)
£8,567.79(exc. VAT)
£8,567.79/unit
In Stock
Panasonic ECWFJ Film Capacitor, 5 %, 5 μF 1100 V dc 1100V ac, Through Hole
  • RS Stock No. 637-833
  • Mfr. Part No. ECWFJ1B505JA
Subtotal (1 unit)
£2.29(exc. VAT)
£2.29/unit
In Stock
RS PRO 1.2 kΩ, 0805 Thick Film Surface Mount Resistor ±1 % 0.13 W
  • RS Stock No. 804-6445
Subtotal (1 reel of 5000 units)
£20.00(exc. VAT)
£0.004/unit
In Stock
Bourns, SRP6530A Shielded Wirewound Surface Mount Inductor with a Metal Alloy Powder Core, 8.2 μH 20 % 7.5 A Idc Q:20
  • RS Stock No. 231-7197P
  • Mfr. Part No. SRP6530A-8R2M
Subtotal 5 units (supplied on a continuous strip)
£4.14(exc. VAT)
£0.828/unit
In Stock
Vishay MMA 270 Ω, 0204 Thin Film Surface Mount Resistor ±1 % 0.25 W - MMA02040C2700FB300
  • RS Stock No. 678-7315
  • Mfr. Part No. MMA02040C2700FB300
Subtotal (1 pack of 25 units)
£0.875(exc. VAT)
£0.035/unit
In Stock
TE Connectivity 470 Ω Carbon Film Resistor 0.25 W 5 % CFR16J470R
  • RS Stock No. 164-8716
  • Mfr. Part No. CFR16J470R
Subtotal (1 bag of 5000 units)
£50.00(exc. VAT)
£0.01/unit
In Stock
Wurth Elektronik 1000 μH Leaded Inductor, 3.4 Ω Rdc
  • RS Stock No. 485-966
  • Mfr. Part No. 744732102
Subtotal (1 unit)
£1.08(exc. VAT)
£1.08/unit
In Stock
Bourns, SRN8040TA, 0804 Shielded Surface Mount Inductor with a Ferrite Core, 68 μH Semi Shielded 20 % 1.5 A Idc Q:12
  • RS Stock No. 223-1820
  • Mfr. Part No. SRN8040TA-680M
Subtotal (1 reel of 1000 units)
£223.00(exc. VAT)
£0.223/unit
In Stock
1 kΩ, Through Hole Trimmer Potentiometer, Pin 0.5 W Top Adjust Bourns, 3296
  • RS Stock No. 167-3376
  • Mfr. Part No. 3296W-1-102LF
Subtotal (1 tube of 50 units)
£56.50(exc. VAT)
£1.13/unit
In Stock
Bourns, SRN8040TA, 0804 Shielded Surface Mount Inductor with a Ferrite Core, 33 μH Semi Shielded 20 % 2.1 A Idc Q:12
  • RS Stock No. 223-1819
  • Mfr. Part No. SRN8040TA-330M
Subtotal (1 tape of 5 units)
£2.18(exc. VAT)
£0.436/unit
In Stock
Arcol, 16 Ω 25 W Wirewound Chassis Mount Resistor ±5 %
  • RS Stock No. 615-0426P
  • Mfr. Part No. HS25 16R J
Subtotal 1 unit (supplied in a bag)
£6.42(exc. VAT)
£6.42/unit
1
1204
8485
Results per page

Guides & Articles

LED Resistor Value Calculator
A calculator designed to help you understand what resistance value you require from your LED resistor, in order to ensure safety for your LED lighting.
Learn more
Resistors Guide
What are the different types of resistors? Learn more in our comprehensive guide.
Read more
Potentiometers Guide
Our potentiometers guide will help you understand their uses, how they work, the various types and characteristics.
Read more
A Guide to Voltage Controlled Oscillators
This guide covers voltage controlled oscillators, explaining what they are, the different types available, and examples of how they fit into a circuit.
Explore VCOs

Related links