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

44770 Products showing for Capacitors

1 of 999+
In Stock
KEMET C27 Metallised Polypropylene Film Capacitor, 470V ac, ±5%, 4μF, Chassis Mount
  • RS Stock No. 377-9030
  • Mfr. Part No. C274ACF4400WA0J
Each
HK$62.90
In Stock
Nichicon 470μF Aluminium Electrolytic Capacitor 100V dc, Radial, Through Hole - UVZ2A471MHD
  • RS Stock No. 845-4903
  • Mfr. Part No. UVZ2A471MHD
Each (In a Pack of 5)
HK$13.36
In Stock
EPCOS B32653 Polypropylene Film Capacitor, 1 kV dc, 250 V ac, ±10%, 220nF, Through Hole
  • RS Stock No. 190-8551
  • Mfr. Part No. B32653A0224K000
Each
HK$12.70
In Stock
Panasonic 120μF Aluminium Electrolytic Capacitor 50V dc, Radial, Through Hole - EEUFC1H121
  • RS Stock No. 315-0855P
  • Mfr. Part No. EEUFC1H121
Each (Supplied in a Bag)
HK$3.48
In Stock
Panasonic 2.2μF Aluminium Electrolytic Capacitor 50V dc, Radial, Through Hole - ECA1HHG2R2
  • RS Stock No. 365-4212
  • Mfr. Part No. ECA1HHG2R2
Each (In a Pack of 5)
HK$1.80
In Stock
KEMET C27 Metallised Polypropylene Film Capacitor, 470V ac, ±5%, 4μF, Chassis Mount
  • RS Stock No. 377-8908
  • Mfr. Part No. C274AC34400SA0J
Each
HK$28.70
In Stock
KEMET C4C Polypropylene Capacitor PP, 3kV dc, ±5%, 68nF, Through Hole
  • RS Stock No. 384-7789
  • Mfr. Part No. C4CAYUC2680AA1J
Each
HK$50.20
Temporarily out of stock
Panasonic ECWF(A) Polypropylene Film Capacitor, 250V dc, ±5%, 1.5μF, Through Hole
  • RS Stock No. 727-0029
  • Mfr. Part No. ECWF2155JA
Each (In a Pack of 2)
HK$13.50
In Stock
Panasonic 100μF Aluminium Electrolytic Capacitor 25V dc, Radial, Through Hole - EEUFC1E101S
  • RS Stock No. 920-4894
  • Mfr. Part No. EEUFC1E101S
Each (In a Bag of 200)
HK$0.978
In Stock
TDK 33nF Multilayer Ceramic Capacitor MLCC, 630V dc V, ±5% , SMD
  • RS Stock No. 915-5452
  • Mfr. Part No. CGA6P4C0G2J333J250AA
Each (In a Pack of 5)
HK$8.20
In Stock
KEMET 27pF Multilayer Ceramic Capacitor MLCC, 50V dc V, ±5% , SMD
  • RS Stock No. 147-409
  • Mfr. Part No. C0603C270J5GACTU
Each (In a Pack of 50)
HK$0.156
Currently unavailable
CHEMI-CON 220μF Aluminium Electrolytic Capacitor 10V dc, Through Hole - EKMQ100ELL221ME11D
  • RS Stock No. 144-7267
  • Mfr. Part No. EKMQ100ELL221ME11D
Each (In a Pack of 10)
HK$2.195
Being discontinued
Taiyo Yuden 1μF Multilayer Ceramic Capacitor MLCC, 50V dc V, ±10% , SMD
  • RS Stock No. 172-1420
  • Mfr. Part No. UMK316B7105KL-T
Each (On a Reel of 2000)
HK$0.367
In Stock
CHEMI-CON 3300μF Aluminium Electrolytic Capacitor 50V dc, Snap-In - EKMH500VSN332MP35S
  • RS Stock No. 145-0348
  • Mfr. Part No. EKMH500VSN332MP35S
Each (In a Pack of 2)
HK$33.40
In Stock
Panasonic 100μF Aluminium Electrolytic Aluminium Electrolytic Capacitor 25V dc, Radial, Through Hole - EEUFM1E101
  • RS Stock No. 526-1430
  • Mfr. Part No. EEUFM1E101
Each (In a Pack of 5)
HK$2.20
In Stock
Nichicon 220μF Aluminium Electrolytic Capacitor 50V dc, Radial, Through Hole - UHE1H221MPD
  • RS Stock No. 491-0327
  • Mfr. Part No. UHE1H221MPD
Each (In a Pack of 5)
HK$3.66
Last RS stock
Vishay 15F Supercapacitor -20 → +50% Tolerance, 220 EDLC 2.7V dc, Through Hole
  • RS Stock No. 113-5875
  • Mfr. Part No. MAL222090003E3
Each
HK$40.80
In Stock
Rubycon 100μF Aluminium Electrolytic Capacitor 16V dc, Radial, Through Hole - 16ZLH100MEFC5X11
  • RS Stock No. 703-7488
  • Mfr. Part No. 16ZLH100MEFC5X11
Each (In a Pack of 50)
HK$0.658
In Stock
Samsung Electro-Mechanics 100nF Multilayer Ceramic Capacitor MLCC, 50V dc V, ±10% , SMD
  • RS Stock No. 766-1126
  • Mfr. Part No. CL31B104KBCNNNL
Each (In a Pack of 250)
HK$0.232
Last RS stock
Nichicon 100μF Aluminium Electrolytic Capacitor 35V dc, Radial, Through Hole - UVR1V101MED
  • RS Stock No. 862-3323
  • Mfr. Part No. UVR1V101MED
Each
HK$2.50
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