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.

48794 Products showing for Capacitors

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  • RS stock no. 756-7654
  • Mfr. Part No. EKXJ401ELL820MM25S
Subtotal (1 unit)
R 53,86(exc. VAT)
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  • RS stock no. 763-9466
  • Mfr. Part No. 50PK220MEFC10X12.5
Subtotal (1 pack of 10 units)
R 59,73(exc. VAT)
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  • RS stock no. 198-8104
  • Mfr. Part No. CC0805KKX7R8BB105
Subtotal (1 tape of 100 units)
R 65,20(exc. VAT)
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  • Mfr. Part No. LLS2W331MELB
Subtotal (1 unit)
R 112,06(exc. VAT)
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  • RS stock no. 315-0704
  • Mfr. Part No. EEUFC1V151
Subtotal (1 pack of 5 units)
R 45,68(exc. VAT)
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  • RS stock no. 200-6631
  • Mfr. Part No. CC0603MRX5R7BB106
Subtotal (1 tape of 10 units)
R 23,03(exc. VAT)
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  • RS stock no. 118-261
  • Mfr. Part No. MKP1841268204
Subtotal (1 pack of 10 units)
R 280,05(exc. VAT)
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  • RS stock no. 756-7682
  • Mfr. Part No. EKXJ451ELL820MMN3S
Subtotal (1 unit)
R 60,26(exc. VAT)
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  • RS stock no. 315-0552
  • Mfr. Part No. EEUFC1E221
Subtotal (1 pack of 5 units)
R 47,02(exc. VAT)
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  • RS stock no. 747-2134
  • Mfr. Part No. EEUEB1H221
Subtotal (1 pack of 5 units)
R 74,07(exc. VAT)
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  • RS stock no. 846-6966
  • Mfr. Part No. LGU1J682MELC
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R 112,95(exc. VAT)
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  • Mfr. Part No. UVZ1H102MHD
Subtotal (1 pack of 10 units)
R 131,15(exc. VAT)
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  • Mfr. Part No. FKP2/0.01/63/5
Subtotal (1 pack of 10 units)
R 177,09(exc. VAT)
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  • RS stock no. 788-7554
  • Mfr. Part No. 20SVP100M
Subtotal (1 pack of 2 units)
R 71,23(exc. VAT)
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  • RS stock no. 108-2435
  • Mfr. Part No. FKS2 1.0N 100M
Subtotal (1 pack of 5 units)
R 70,33(exc. VAT)
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  • RS stock no. 715-2202
  • Mfr. Part No. UCS2D470MHD
Subtotal (1 pack of 5 units)
R 104,67(exc. VAT)
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  • RS stock no. 708-3642
  • Mfr. Part No. EEUFR1C102L
Subtotal (1 pack of 10 units)
R 122,87(exc. VAT)
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  • RS stock no. 526-1216
  • Mfr. Part No. EEUFM1A471
Subtotal (1 pack of 5 units)
R 40,56(exc. VAT)
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  • RS stock no. 628-3920
  • Mfr. Part No. ECA1VHG471
Subtotal (1 pack of 5 units)
R 69,01(exc. VAT)
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  • RS stock no. 852-6291
  • Mfr. Part No. LLS1J472MELB
Subtotal (1 unit)
R 84,26(exc. VAT)
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