Capacitors

Capacitors are passive electrical components found in almost all electronics applications. Our range includes over 60,000 different capacitors including aluminium, tantalum, polymer, polyester film and ceramic capacitors. We source from globally renowned manufacturers AVX, Murata, KEMET, Panasonic, TDK and many more, so that you can rely on performance.

What is a capacitor and what does it do?

A capacitor is a device used to store energy as an electric charge, similar to a battery but they are able to release the charge much faster. The amount it's able to store is known as capacitance, this is measured in Farads (F). They comprise 2 metal plates (conductors) separated by an electrical insulator (dielectric).

What capacitor types are available?

There are many different types available with detailed specifications for their required function. The main elements are available in varying materials and these determine many properties of the capacitor. Some factors to consider are:

  • Metal plate material - e.g silver, tantalum, aluminium
  • Dielectric plate material - paper, film, ceramic, glass
  • Max voltage - cannot be exceeded or the device will break
  • Size - capacitance and dimensions
  • Tolerance - variance on the capacitance value
  • Mounting type - how it is fixed to the circuit
  • ESR (Equivalent series resistance) - resistance of the terminals

Applications of capacitors

Capacitors are found all around us, they are used in most electronics from fans to hybrid electric cars - there are over 500 just in a typical smartphone. Here are some of their uses:

  • Decoupling capacitors - can control high-frequency noise, removing voltage ripples from the power supply.
  • Energy storage and supply - deliver stored energy bursts quickly, like a camera flash for example.
  • Signal filtering - they are able to block low-frequency signals and allow higher-frequencies to pass through. Useful in telecommunications.
Aluminium Capacitors
Aluminium Capacitors
Array Capacitors
Array Capacitors
Capacitors Accessories
Capacitors Accessories
Feedthrough Capacitors
Feedthrough Capacitors
Film Capacitors
Film Capacitors
MLCCs - Multilayer Ceramic Capacitors
MLCCs - Multilayer Ceramic Capacitors
Mica Capacitors
Mica Capacitors
Multilayer Organic Capacitors
Multilayer Organic Capacitors
Niobium Oxide Capacitors
Niobium Oxide Capacitors
Polyester Film Capacitors
Polyester Film Capacitors
Polymer Capacitors
Polymer Capacitors
Power Factor Correction Capacitors
Power Factor Correction Capacitors
Single Layer Ceramic Capacitors
Single Layer Ceramic Capacitors
Supercapacitors
Supercapacitors
Tantalum Capacitors
Tantalum Capacitors
Variable Trimmer Capacitors
Variable Trimmer Capacitors

47420 Products showing for Capacitors

1 / 999+
In Stock
RS PRO 2.2 μF Multilayer Ceramic Capacitor, 50V dc, 10 %
  • RS Stock No. 271-0973
Subtotal (1 pack of 5 units)
MYR9.07
In Stock
Eaton 1 F Supercapacitor -20 to 80 % Tolerance, Supercap KW 5.5V dc, Through Hole
  • RS Stock No. 769-6217
  • Mfr. Part No. KW-5R5C105-R
Subtotal (1 unit)
MYR41.72
In Stock
Nichicon 4700 μF Capacitor 450V dc, Screw - LNY2W472MSEH
  • RS Stock No. 714-8720
  • Mfr. Part No. LNY2W472MSEH
Subtotal (1 unit)
MYR297.35
In Stock
KEMET R75 Polypropylene Capacitor, 5 %, 270 nF 630 V dc 250V ac, Through Hole
  • RS Stock No. 212-6674
  • Mfr. Part No. R75PI327050H3J
Subtotal (1 pack of 10 units)
MYR29.30
Stocked by manufacturer
Better World
Schneider Electric Power Factor Correction Capacitor PFC 500 kvar 3
  • RS Stock No. 211-2806
  • Mfr. Part No. VLVAF5N03520AB
Subtotal (1 unit)
MYR120,085.06
In Stock
EPCOS B32652 Film Capacitor 100 nF 250V ac 630 V dc, Through Hole 2
  • RS Stock No. 190-8371
  • Mfr. Part No. B32652A6104K000
Subtotal (1 unit)
MYR3.23
Last RS stock
KEMET 100 nF Multilayer Ceramic Capacitor, 50V dc, ±20 %, Through Hole Radial
  • RS Stock No. 538-1449
  • Mfr. Part No. C322C104M5U5TA
Subtotal (1 pack of 5 units)
MYR3.80
In Stock
KEMET R58 Film Capacitor, 10 %, 270 nF 600 V dc 600V ac, PCB
  • RS Stock No. 262-2139
  • Mfr. Part No. R586R327050T0K
Subtotal (1 unit)
MYR11.26
In Stock
TDK 100 nF Multilayer Ceramic Capacitor, 50V dc, +10 %, Through Hole Radial
  • RS Stock No. 194-0538
  • Mfr. Part No. FG28X7R1H104KNT00
Subtotal (1 pack of 10 units)
MYR3.94
In Stock
RS PRO MRA440 Film Capacitor, ±10 %, 10 μF 440V ac, Screw
  • RS Stock No. 196-4680
Subtotal (1 unit)
MYR79.25
In Stock
Nichicon 68 μF Capacitor 450V dc, Snap-in
  • RS Stock No. 752-9549
  • Mfr. Part No. LGJ2W680MELA20
Subtotal (1 unit)
MYR20.67
In Stock
KEMET 30000 μF Capacitor 250V dc, Screw
  • RS Stock No. 144-3387
  • Mfr. Part No. ALS80A303QT250
Subtotal (1 unit)
MYR720.30
Last RS stock
Rubycon 22 μF Capacitor 500V dc, Radial, Through Hole - 500BXC22MEFC18X20 Radial Lead
  • RS Stock No. 749-7369
  • Mfr. Part No. 500BXC22MEFC18X20
Subtotal (1 unit)
MYR14.06
In Stock
Nichicon 2200 μF Capacitor 100V dc, Snap-in - LLS2A222MELA
  • RS Stock No. 846-7136
  • Mfr. Part No. LLS2A222MELA
Subtotal (1 unit)
MYR21.60
In Stock
KEMET R58 Film Capacitor, 10 %, 270 nF 600 V dc 600V ac, PCB
  • RS Stock No. 262-2132
  • Mfr. Part No. R586N327050T0K
Subtotal (1 pack of 2 units)
MYR27.28
In Stock
KEMET C87 Film Capacitor, ±5 %, 15 μF 450V ac, Chassis Mount
  • RS Stock No. 377-8790
  • Mfr. Part No. C878BF35150SA0J
Subtotal (1 unit)
MYR70.26
In Stock
KEMET R41B Film Capacitor, ±10 %, 47 nF 350 V dc 350V ac, Through Hole
  • RS Stock No. 238-5197
  • Mfr. Part No. R41BR347050T0K
Subtotal (1 tape of 5 units)
MYR71.96
Being discontinued
Nichicon XK Film Capacitor 1 μF 630 V dc, Through Hole 2
  • RS Stock No. 755-4545
  • Mfr. Part No. QXK2J105KTP
Subtotal (1 pack of 2 units)
MYR21.12
In Stock
Murata 47 nF Multilayer Ceramic Capacitor, 50V dc, ±10 %, Through Hole Radial
  • RS Stock No. 133-5727
  • Mfr. Part No. RDER71H473K0M1H03A
Subtotal (1 pack of 25 units)
MYR26.925
In Stock
RS PRO 1000 μF Capacitor 63V dc, Snap-in
  • RS Stock No. 706-3370
Subtotal (1 pack of 2 units)
MYR42.88
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