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
Isabellenhutte BVB 5 mΩ, 2725 Zeranin Surface Mount Resistor ±1 % 5 W - BVB-I-R005-1.0
  • RS Stock No. 193-0015
  • Mfr. Part No. BVB-I-R005-1.0
Subtotal (1 reel of 1400 units)
SGD4,354.00(exc. GST)
SGD3.11/unit
Temporarily out of stock
Littelfuse, CG 90 V dc 500 A, Axial 2 Electrode Gas Discharge Tube Gas Discharge Tube
  • RS Stock No. 878-3671
  • Mfr. Part No. CG90L
Subtotal (1 pack of 10 units)
SGD42.22(exc. GST)
SGD4.222/unit
Currently unavailable
500 kΩ, Through Hole Trimmer Potentiometer, Pin 0.5 W Top Adjust Vishay, 64W
  • RS Stock No. 169-3084
  • Mfr. Part No. M64W504KB40
Subtotal (1 box of 200 units)
SGD592.00(exc. GST)
SGD2.96/unit
In Stock
KEMET C4AF Polypropylene Capacitor, 10 %, 47 μF 250V ac, PCB
  • RS Stock No. 207-8840
  • Mfr. Part No. C4AF1EW5470T3AK
Subtotal (1 box of 18 units)
SGD291.85(exc. GST)
SGD16.214/unit
Last RS stock
Rubycon 33 μF Capacitor 100V dc, Radial, Through Hole Radial Lead
  • RS Stock No. 749-7300P
  • Mfr. Part No. 100ZLJ33M8X11.5
Subtotal 10 units (supplied in a bag)
SGD4.77(exc. GST)
SGD0.477/unit
In Stock
KYOCERA AVX 100 pF Multilayer Ceramic Capacitor, 200V dc, ±5 %, Surface
  • RS Stock No. 170-4771
  • Mfr. Part No. 08052U101JAT2A
Subtotal (1 reel of 2000 units)
SGD482.00(exc. GST)
SGD0.241/unit
In Stock
RS PRO Clip for use with 35 mm Dia Capacitor Nylon
  • RS Stock No. 238-7179
Subtotal (1 pack of 5 units)
SGD13.20(exc. GST)
SGD2.64/unit
In Stock
Panasonic ERA 5.49 kΩ, 0603 Metal Film Surface Mount Resistor ±0.1 % Surface 0.1 W - ERA3AEB5491V
  • RS Stock No. 782-688P
  • Mfr. Part No. ERA3AEB5491V
Subtotal 10 units (supplied on a continuous strip)
SGD0.64(exc. GST)
SGD0.064/unit
In Stock
Bourns, SRN6045TA, 6045T Shielded Surface Mount Inductor with a Ferrite Core, 68 μH Semi Shielded 20 % 920 mA Idc Q:15
  • RS Stock No. 223-1804
  • Mfr. Part No. SRN6045TA-680M
Subtotal (1 reel of 1000 units)
SGD333.00(exc. GST)
SGD0.333/unit
Temporarily out of stock
Wurth Elektronik 3300 μF Capacitor 25V dc, Through Hole - 860010480023 Radial Lead
  • RS Stock No. 163-6101
  • Mfr. Part No. 860010480023
Subtotal (1 box of 200 units)
SGD322.00(exc. GST)
SGD1.61/unit
In Stock
Abracon, 50MHz Clock Oscillator Crystal Oscillator, ±100 ppm HCMOS, 4-Pin Surface Mount ASV-50.000MHZ-E-T
  • RS Stock No. 238-5790
  • Mfr. Part No. ASV-50.000MHZ-E-T
Subtotal (1 reel of 1000 units)
SGD1,200.00(exc. GST)
SGD1.20/unit
In Stock
Elma 16 ppr Pulse 2 Bit Quadrature Mechanical Rotary Encoder with a 6 mm Slotted Shaft
  • RS Stock No. 241-2357
  • Mfr. Part No. E33-VT6C2-M45T
Subtotal (1 box of 10 units)
SGD625.90(exc. GST)
SGD62.59/unit
Last RS stock
Nichicon 47 μF Aluminium Electrolytic Capacitor 16V, Surface Through Hole - UCD1C470MCL6GS SMD
  • RS Stock No. 832-169P
  • Mfr. Part No. UCD1C470MCL6GS
Subtotal 50 units (supplied on a continuous strip)
SGD19.45(exc. GST)
SGD0.389/unit
Last RS stock
Same Sky 85 dB Through Hole Buzzer Internal Magnetic Buzzer 4.5 mm 4 V dc Min 9 mm 4.5mm 6V dc Max
  • RS Stock No. 259-6316
  • Mfr. Part No. CST-951AP
Subtotal (1 pack of 5 units)
SGD9.20(exc. GST)
SGD1.84/unit
In Stock
TE Connectivity 22 kΩ Metal Film Resistor 0.6 W 1 % LR1F22K
  • RS Stock No. 168-0194
  • Mfr. Part No. LR1F22K
Subtotal (1 reel of 4000 units)
SGD144.00(exc. GST)
SGD0.036/unit
Currently unavailable
TE Connectivity RN73 3.32 kΩ, 0805 Thin Film Surface Mount Resistor ±0.1 % Surface 0.1 W - RN73C2A3K32B
  • RS Stock No. 215-2989P
  • Mfr. Part No. RN73C2A3K32B
Subtotal 5 units (supplied on a continuous strip)
SGD7.14(exc. GST)
SGD1.428/unit
In Stock
Vishay CRCW 24.9 kΩ, 0402 Thick Film Surface Mount Resistor ±1 % 0.06 W - CRCW040224K9FKED
  • RS Stock No. 678-9024
  • Mfr. Part No. CRCW040224K9FKED
Subtotal (1 pack of 50 units)
SGD1.30(exc. GST)
SGD0.026/unit
Last RS stock
Nichicon 220 μF Surface Polymer Capacitor, 25V dc
  • RS Stock No. 187-2284P
  • Mfr. Part No. GYB1E221MCQ1GS
Subtotal 10 units (supplied on a continuous strip)
SGD9.76(exc. GST)
SGD0.976/unit
Temporarily out of stock
RND RND 155100 33R F, 33 Ω 100 W Wirewound Chassis Mount Resistor 5 %
  • RS Stock No. 804-971
  • Mfr. Part No. RND 155100 33R F
Subtotal (1 unit)
SGD19.97(exc. GST)
SGD19.97/unit
In Stock
Bourns 3310 500 kΩ Rotary Potentiometer 1-Gang Bush, 3310Y-001-504L
  • RS Stock No. 522-0704
  • Mfr. Part No. 3310Y-001-504L
Subtotal (1 unit)
SGD4.62(exc. GST)
SGD4.62/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