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.

51087 Products showing for Capacitors

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  • RS Stock No. 247-8022
  • Mfr. Part No. GRM155R71H104KE14D
Subtotal (200 units, on tapes of 200)
£3.20(exc. VAT)
£0.016/unit
In Stock
  • RS Stock No. 123-5095
  • Mfr. Part No. C4ATFBW5100A3FJ
Subtotal (1 unit)
£8.22(exc. VAT)
£8.22/unit
Temporarily out of stock
  • RS Stock No. 276-3765
  • Mfr. Part No. GRM21BZ71A226ME15L
Subtotal (10 units, on tapes of 10)
£1.17(exc. VAT)
£0.117/unit
In Stock
  • RS Stock No. 228-6925
  • Mfr. Part No. ECA1HM471
Subtotal (5 units, in packs of 5)
£3.42(exc. VAT)
£0.684/unit
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  • RS Stock No. 885-1960
  • Mfr. Part No. GRM32ER61A107ME20L
Subtotal (10 units, in packs of 10)
£4.14(exc. VAT)
£0.414/unit
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  • RS Stock No. 207-7708
  • Mfr. Part No. C1210X153JDGACAUTO
Subtotal (2 units, on tapes of 2)
£4.16(exc. VAT)
£2.08/unit
Temporarily out of stock
  • RS Stock No. 260-8835P
  • Mfr. Part No. GRM32EC72A106KE05K
Subtotal (5 units, supplied on a continuous strip)
£4.34(exc. VAT)
£0.868/unit
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  • RS Stock No. 788-3076
  • Mfr. Part No. C3216X5R1H106K160AB
Subtotal (5 units, in packs of 5)
£3.49(exc. VAT)
£0.698/unit
Temporarily out of stock
  • RS Stock No. 242-7506
  • Mfr. Part No. CGA5L1X7R1H106K160AC
Subtotal (10 units, in packs of 10)
£3.75(exc. VAT)
£0.375/unit
In Stock
  • RS Stock No. 788-2985
  • Mfr. Part No. CGA3E2X7R1H104K080AA
Subtotal (50 units, in packs of 50)
£1.50(exc. VAT)
£0.03/unit
Currently unavailable
  • RS Stock No. 135-8408
  • Mfr. Part No. TPST106K010R1000
Subtotal (10 units, in bags of 10)
£8.71(exc. VAT)
£0.871/unit
Temporarily out of stock
  • RS Stock No. 260-8809
  • Mfr. Part No. GRM188Z71C475KE21D
Subtotal (20 units, on tapes of 20)
£2.74(exc. VAT)
£0.137/unit
Temporarily out of stock
  • RS Stock No. 165-6471
  • Mfr. Part No. GRT31CR61H106KE01L
Subtotal (25 units, in packs of 25)
£7.25(exc. VAT)
£0.29/unit
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  • RS Stock No. 915-5373P
  • Mfr. Part No. CGA5L3X5R1H106K160AB
Subtotal (10 units, supplied on a continuous strip)
£3.16(exc. VAT)
£0.316/unit
In Stock
  • RS Stock No. 841-4801
  • Mfr. Part No. EKMQ201VSN821MQ35S
Subtotal (1 unit)
£3.49(exc. VAT)
£3.49/unit
Temporarily out of stock
  • RS Stock No. 146-4275
  • Mfr. Part No. C0805C105J3RACTU
Subtotal (10 units, in bags of 10)
£4.16(exc. VAT)
£0.416/unit
Temporarily out of stock
  • RS Stock No. 788-3060P
  • Mfr. Part No. C3216X5R1E476M160AC
Subtotal (5 units, supplied on a continuous strip)
£3.49(exc. VAT)
£0.698/unit
Temporarily out of stock
  • RS Stock No. 113-9953
  • Mfr. Part No. GRM21BR61C226ME44L
Subtotal (100 units, in packs of 100)
£9.30(exc. VAT)
£0.093/unit
In Stock
  • RS Stock No. 801-5243
  • Mfr. Part No. C0603C105K3RACTU
Subtotal (25 units, in packs of 25)
£3.625(exc. VAT)
£0.145/unit
Temporarily out of stock
  • RS Stock No. 247-8106P
  • Mfr. Part No. GRM21BR61C106KE15L
Subtotal (50 units, supplied on a continuous strip)
£3.00(exc. VAT)
£0.06/unit
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