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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

51211 Products showing for Capacitors

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Temporarily out of stock
KEMET R75 Polypropylene Capacitor, 5 %, 100 nF 160 V dc 90V ac, Through Hole
  • RS Stock No. 212-6553
  • Mfr. Part No. R75GF310050H3J
Subtotal (1 bag of 1800 units)
£266.40(exc. VAT)
£0.148/unit
In Stock
Yageo 10 nF Multilayer Ceramic Capacitor, 50V dc, ±10 %, Surface
  • RS Stock No. 616-9537
  • Mfr. Part No. CC0603KRX7R9BB103
Subtotal (1 pack of 4000 units)
£24.00(exc. VAT)
£0.006/unit
Currently unavailable
KEMET 150 μF Surface Polymer Capacitor, 4V dc
  • RS Stock No. 209-1461
  • Mfr. Part No. T598B157M004ATE045
Subtotal (1 tape of 5 units)
£1.24(exc. VAT)
£0.248/unit
In Stock
KEMET C4AQ Polypropylene Capacitor, 5 %, 3.3 μF 1.3 kV dc, PCB
  • RS Stock No. 207-9004
  • Mfr. Part No. C4AQULU4330A19J
Subtotal (1 box of 80 units)
£85.76(exc. VAT)
£1.072/unit
Last RS stock
Vishay 680 μF Capacitor 400V dc, Through Hole - MAL219356681E3
  • RS Stock No. 206-6208
  • Mfr. Part No. MAL219356681E3
Subtotal (1 box of 50 units)
£548.00(exc. VAT)
£10.96/unit
In Stock
Panasonic 120 μF Aluminium Electrolytic Capacitor 50V dc, Through Hole
  • RS Stock No. 210-5771P
  • Mfr. Part No. EEHAZT1H121B
Subtotal 2 units (supplied in a box)
£3.02(exc. VAT)
£1.51/unit
In Stock
Panasonic 68 μF Aluminium Electrolytic Capacitor 63V dc, Through Hole - EEHAZC1J680B
  • RS Stock No. 210-5672
  • Mfr. Part No. EEHAZC1J680B
Subtotal (1 tape of 2 units)
£2.00(exc. VAT)
£1.00/unit
In Stock
Panasonic ECQE(F) Film Capacitor 220 nF 250V ac 250 V dc, Through Hole
  • RS Stock No. 622-4690P
  • Mfr. Part No. ECQE2224JF
Subtotal 25 units (supplied in a bag)
£4.55(exc. VAT)
£0.182/unit
Temporarily out of stock
KEMET R75 Polypropylene Capacitor, 5 %, 12 nF 1.25 kV dc 600V ac, Through Hole
  • RS Stock No. 212-6740
  • Mfr. Part No. R75RI212050H3J
Subtotal (1 bag of 900 units)
£183.60(exc. VAT)
£0.204/unit
Temporarily out of stock
Panasonic 150 μF Aluminium Electrolytic Capacitor 35V dc, Through Hole - EEHAZC1V151B
  • RS Stock No. 210-5685
  • Mfr. Part No. EEHAZC1V151B
Subtotal (1 box of 1000 units)
£478.00(exc. VAT)
£0.478/unit
Currently unavailable
Vishay 400 pF 30kV dc ±20 % Ceramic Dielectric, 715C, Screw 85 °C Max Op. Temp.
  • RS Stock No. 210-1577
  • Mfr. Part No. 715C30KTT40
Subtotal (1 box of 24 units)
£814.56(exc. VAT)
£33.94/unit
Temporarily out of stock
Panasonic 390 μF Polymer Capacitor 20V dc, Surface - 20SVT390M
  • RS Stock No. 210-5568
  • Mfr. Part No. 20SVT390M
Subtotal (1 reel of 400 units)
£374.80(exc. VAT)
£0.937/unit
Stocked by manufacturer
RS Better World
Schneider Electric Power Factor Correction Capacitor PFC 1150 kvar 3
  • RS Stock No. 211-2819
  • Mfr. Part No. VLVAF8P03539AB
Subtotal (1 unit)
£62,924.33(exc. VAT)
£62,924.33/unit
In Stock
Vishay MKP385E Polypropylene Capacitor, ±10 %, 150 nF 400 V dc 900V ac, Through Hole
  • RS Stock No. 204-8431P
  • Mfr. Part No. MKP385e3152BJKI2B0
Subtotal 5 units (supplied in a bag)
£6.36(exc. VAT)
£1.272/unit
Currently unavailable
KEMET 33 μF Surface Polymer Capacitor, 6.3V dc
  • RS Stock No. 209-1492
  • Mfr. Part No. T599B336M006ATE090
Subtotal (1 tape of 5 units)
£2.87(exc. VAT)
£0.574/unit
In Stock
Panasonic 220 μF Aluminium Electrolytic Capacitor 25V dc, Through Hole
  • RS Stock No. 210-5654P
  • Mfr. Part No. EEHAZC1E221B
Subtotal 2 units (supplied in a box)
£1.80(exc. VAT)
£0.90/unit
In Stock
KEMET R75 Polypropylene Capacitor, 5 %, 10 μF 400 V dc 220V ac, Through Hole
  • RS Stock No. 212-6634P
  • Mfr. Part No. R75MW510050H3J
Subtotal 1 unit (supplied in a tray)
£10.33(exc. VAT)
£10.33/unit
Temporarily out of stock
KEMET R75 Polypropylene Capacitor, 5 %, 220 nF 630 V dc 250V ac, Through Hole
  • RS Stock No. 212-6670
  • Mfr. Part No. R75PI322050H3J
Subtotal (1 bag of 500 units)
£141.00(exc. VAT)
£0.282/unit
Currently unavailable
KEMET 47 μF Surface Polymer Capacitor, 6.3V dc
  • RS Stock No. 209-1506
  • Mfr. Part No. T599B476M006ATE070
Subtotal (1 tape of 5 units)
£1.11(exc. VAT)
£0.222/unit
Last RS stock
KEMET R75 Polypropylene Capacitor, 5 %, 8.2 μF 630 V dc 250V ac, Through Hole
  • RS Stock No. 212-6704P
  • Mfr. Part No. R75PW482050H3J
Subtotal 1 unit (supplied in a tray)
£8.04(exc. VAT)
£8.04/unit
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