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
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

44099 Products showing for Capacitors

1 of 999+
In Stock
Nichicon 470 μF Capacitor 100 V dc, Radial, Through Hole - UVZ2A471MHD Radial Lead
  • RS Stock No. 845-4903
  • Mfr. Part No. UVZ2A471MHD
Subtotal (1 pack of 5 units)
HK$66.80
In Stock
EPCOS B32653 Film Capacitor 220 nF 250 V ac 1 kV dc, Through Hole 2
  • RS Stock No. 190-8551
  • Mfr. Part No. B32653A0224K000
Subtotal (1 unit)
HK$12.70
In Stock
KEMET 100 nF Multilayer Ceramic Capacitor, 100 V dc, 5 %, Surface Mount
  • RS Stock No. 205-3265
  • Mfr. Part No. C0805C104J1RACTU
Subtotal (1 tape of 25 units)
HK$36.80
In Stock
Murata 22 μF Multilayer Ceramic Capacitor, 10 V dc, ±20 %, Surface
  • RS Stock No. 276-3747
  • Mfr. Part No. GRM158R61A226ME15D
Subtotal (1 tape of 10 units)
HK$14.30
In Stock
Panasonic 220 μF Capacitor 16 V dc, Through Hole - EEUFC1C221 Radial Lead
  • RS Stock No. 449-0974
  • Mfr. Part No. EEUFC1C221
Subtotal (1 pack of 5 units)
HK$15.20
In Stock
TDK 33 nF Multilayer Ceramic Capacitor, 630 V dc, ±5 %, Surface
  • RS Stock No. 915-5452
  • Mfr. Part No. CGA6P4C0G2J333J250AA
Subtotal (1 pack of 5 units)
HK$41.00
In Stock
Nichicon 220 μF Capacitor 25 V dc, Through Hole Radial Lead
  • RS Stock No. 243-7315
  • Mfr. Part No. UPM1E221MPD6
Subtotal (1 tape of 5 units)
HK$21.90
In Stock
KEMET 47 pF Multilayer Ceramic Capacitor, 200 V dc, ±5 %, Through Hole Radial
  • RS Stock No. 538-1281
  • Mfr. Part No. C315C470J2G5TA7303
Subtotal (1 pack of 5 units)
HK$15.50
In Stock
KEMET 1 nF Multilayer Ceramic Capacitor, 50 V dc, ±10 %, Surface Mount
  • RS Stock No. 648-0783
  • Mfr. Part No. C1206C102K5RACTU
Subtotal (1 pack of 10 units)
HK$4.50
In Stock
KEMET 27 pF Multilayer Ceramic Capacitor, 50 V dc, ±5 %, Surface Mount
  • RS Stock No. 147-409
  • Mfr. Part No. C0603C270J5GACTU
Subtotal (1 pack of 50 units)
HK$8.60
Temporarily out of stock
KEMET PMR210 Paper Capacitor X1 250 V ac 250 V dc, Through Hole
  • RS Stock No. 173-1816
  • Mfr. Part No. PMR210MB5220M100R30
Subtotal (1 bag of 400 units)
HK$3,860.40
In Stock
Vishay 1 μF MnO2 Tantalum Capacitor 35 V dc, Surface, 293D Series
  • RS Stock No. 684-3872
  • Mfr. Part No. 293D105X9035B2TE3
Subtotal (1 pack of 10 units)
HK$19.10
In Stock
Nichicon 1000 μF Capacitor 50 V dc, Through Hole - UPW1H102MHD Radial Lead
  • RS Stock No. 715-2886
  • Mfr. Part No. UPW1H102MHD
Subtotal (1 pack of 5 units)
HK$69.70
In Stock
Wurth Elektronik 470 μF Capacitor 50 V dc, Radial, Through Hole Radial Lead
  • RS Stock No. 839-6286
  • Mfr. Part No. 860240680011
Subtotal (1 bag of 2 units)
HK$27.20
In Stock
TDK 2.2 μF Multilayer Ceramic Capacitor, 50 V dc, ±10 %, Surface Mount
  • RS Stock No. 183-5884
  • Mfr. Part No. CGA4J3X7R1H225K125AB
Subtotal (1 pack of 50 units)
HK$99.20
In Stock
Nichicon 1000 μF Capacitor 25 V dc, Through Hole - UHE1E102MHD6 Radial Lead
  • RS Stock No. 490-9973
  • Mfr. Part No. UHE1E102MHD6
Subtotal (1 pack of 5 units)
HK$39.20
Last RS stock
Rubycon 47 μF Capacitor 50 V dc, Through Hole - 50YXF47M6.3X11 Solder
  • RS Stock No. 224-4353
  • Mfr. Part No. 50YXF47M6.3X11
Subtotal (1 pack of 5 units)
HK$15.90
In Stock
RS PRO 470 μF Capacitor 25 V dc, Radial, Through Hole Radial Lead
  • RS Stock No. 711-1129
Subtotal (1 pack of 25 units)
HK$36.10
In Stock
Nichicon 470 μF Capacitor 50 V dc, Through Hole - UPW1H471MHD Radial Lead
  • RS Stock No. 715-2877
  • Mfr. Part No. UPW1H471MHD
Subtotal (1 pack of 5 units)
HK$36.40
In Stock
Rubycon 220 μF Capacitor 250 V dc, Snap-in - 250MXG220MEFCSN20X25 Radial Lead
  • RS Stock No. 652-2023P
  • Mfr. Part No. 250MXG220MEFCSN20X25
Subtotal 1 unit (supplied in a bag)
HK$31.90
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