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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. Need to switch between capacitance units for your circuit design? Easily and instantly convert capacitance values between farads, microfarads, nanofarads and picofarads with our Capacitance Conversion calculator.

Take a look at our voltage divider calculator to work out the output voltage of a resistor divider circuit for a given set of resistor values and source voltage in seconds.

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).

Looking to calculate the cutoff frequency for low-pass and high-pass filters? Our handy calculator will give you the answer you’re looking for in a matter of seconds.

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
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

48901 Products showing for Capacitors

7 of 999+
In Stock
Panasonic 180 μF Capacitor 63V dc, Through Hole - EEUFR1J181 Radial Lead
  • RS Stock No. 756-8348
  • Mfr. Part No. EEUFR1J181
Subtotal (1 pack of 5 units)
£5.98(exc. VAT)
In Stock
Vishay 220 μF Capacitor 40V dc, Through Hole - MAL202127221E3 Axial
  • RS Stock No. 280-3285
  • Mfr. Part No. MAL202127221E3
Subtotal (1 unit)
£2.98(exc. VAT)
In Stock
KEMET C27 Film Capacitor P0, ±5 %, 5 μF 470V ac, Chassis Mount
  • RS Stock No. 441-9290
  • Mfr. Part No. C274AC34500SA0J
Subtotal (1 unit)
£4.16(exc. VAT)
In Stock
Rubycon 120 μF Capacitor 450V dc, Radial, Through Hole Radial Lead
  • RS Stock No. 749-7256
  • Mfr. Part No. 450CXW120MEFC18X31.5
Subtotal (1 unit)
£6.78(exc. VAT)
In Stock
KEMET C4C Film Capacitor, ±5 %, 22 nF 3 kV dc 750V ac, Through Hole
  • RS Stock No. 384-7751
  • Mfr. Part No. C4CAYUC2220AA0J
Subtotal (1 unit)
£3.51(exc. VAT)
In Stock
EPCOS B32653 Film Capacitor 220 nF 630V ac 630 V dc, Through Hole 2
  • RS Stock No. 194-3666
  • Mfr. Part No. B32653A6224K000
Subtotal (1 pack of 10 units)
£7.39(exc. VAT)
In Stock
Ducati Energia 4.16.15 Film Capacitor, ±5 %, 2 μF 500V ac, Stud Mount
  • RS Stock No. 388-7664
  • Mfr. Part No. 4.16.15.01.14
Subtotal (1 unit)
£12.74(exc. VAT)
In Stock
Rubycon 680 μF Capacitor 35V dc, Radial, Through Hole - 35ZLH680MEFC10X23
  • RS Stock No. 703-7560
  • Mfr. Part No. 35ZLH680MEFC10X23
Subtotal (1 pack of 5 units)
£2.88(exc. VAT)
In Stock
Nichicon 2200 μF Capacitor 63V dc, Radial, Through Hole Radial Lead
  • RS Stock No. 715-2990
  • Mfr. Part No. UPW1J222MHD
Subtotal (1 pack of 2 units)
£4.53(exc. VAT)
Last RS stock
AVX 0.47 F Supercapacitor 100/-0 % Tolerance, SCM 5V dc, Through Hole
  • RS Stock No. 250-6970
  • Mfr. Part No. SCMR14C474PRBA0
Subtotal (1 unit)
£2.78(exc. VAT)
Temporarily out of stock
KEMET C87 Film Capacitor P2, ±5 %, 6 μF 450V ac, Stud Mount
  • RS Stock No. 911-9409
  • Mfr. Part No. C878BF34600SA0J
Subtotal (1 unit)
£5.41(exc. VAT)
In Stock
Eaton 0.33 F Supercapacitor -20 to 80 % Tolerance, Supercap KW 5.5V dc, Through Hole
  • RS Stock No. 769-6210P
  • Mfr. Part No. KW-5R5C334-R
Subtotal 1 unit (supplied in a bag)
£4.76(exc. VAT)
In Stock
RS PRO Clip for use with 35 mm Dia Capacitor Nylon
  • RS Stock No. 203-5698
Subtotal (1 pack of 5 units)
£7.19(exc. VAT)
New product - Preorder today
Panasonic 4.7 μF Electrolytic Capacitor 63V, Radial - EEUEB1J4R7SH Radial
  • RS Stock No. 759-095P
  • Mfr. Part No. EEUEB1J4R7SH
Subtotal 5 units (supplied as a tape)
£1.36(exc. VAT)
In Stock
KEMET R46 Film Capacitor X2, ±10 %, 47 nF 310 V dc 310V ac, Through Hole
  • RS Stock No. 441-9600
  • Mfr. Part No. R463I24705001K
Subtotal (1 pack of 10 units)
£3.09(exc. VAT)
In Stock
Panasonic 22 μF Electrolytic Capacitor 50V, Radial - EEUEB1H220SB Radial
  • RS Stock No. 759-097P
  • Mfr. Part No. EEUEB1H220SB
Subtotal 5 units (supplied as a tape)
£1.36(exc. VAT)
In Stock
Panasonic 10 μF Aluminium Electrolytic Capacitor 25V dc, Radial, Through Hole - EEAFC1E100 Radial Lead
  • RS Stock No. 449-1006
  • Mfr. Part No. EEAFC1E100
Subtotal (1 pack of 5 units)
£1.48(exc. VAT)
In Stock
Nichicon 10000 μF Capacitor 63V dc, Snap-in - LLS1J103MELC
  • RS Stock No. 846-7123
  • Mfr. Part No. LLS1J103MELC
Subtotal (1 unit)
£5.01(exc. VAT)
In Stock
KEMET 470 pF Multilayer Ceramic Capacitor, 200V dc, ±5 %, Through Hole Radial
  • RS Stock No. 538-1297P
  • Mfr. Part No. C315C471J2G5TA
Subtotal 5 units (supplied in a bag)
£1.56(exc. VAT)
In Stock
RS PRO MRP440 Film Capacitor, ±10 %, 4 μF 440 V dc 440V ac, Screw
  • RS Stock No. 196-4539
Subtotal (1 unit)
£7.51(exc. VAT)
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Panasonic Hybrid capacitor
Upgrade to Panasonic Hybrid Capacitors for better performance
Get more reliability for your builds with Panasonic Hybrid Capacitors. Designed to deliver steady, long‑lasting performance, these capacitors handle heat, stress, and heavy use with ease. Perfect for hobby projects, repairs, or upgrades, they help keep your devices running smoothly for longer.
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