Aluminium Capacitors

Aluminium capacitors are a type of electrolytic capacitor. A capacitor is a two-terminal electrical component that can store energy, somewhat like a battery. Aluminium capacitors are polarised, meaning that the energy can only flow in a single direction. High purity grade Aluminium is used to create the anode foil and the cathode foil upon which electrolysis is applied to form an extremely thin insulating layer of aluminium oxide, which acts as the dielectric of the capacitor. Aluminium capacitors are found in many applications such as power supplies, computer motherboards and domestic appliances.

Dependent on the nature of the Electrolyte, capacitors may also be referred to as “wet” meaning they have a liquid electrolyte or solid. Solid Electrolytes may be hybridized with Aluminium but normally refers to Polymer or Tantalum based capacitors


Types of Aluminium Capacitors


Aluminium Electrolytic Capacitors


Electrolytic capacitors consist of an electrolyte which is a liquid or gel that consists of a large concentration of ions, and when voltage is applied across its terminals, it leads to charges being stored on the anode and cathode foils. The electric charge that can be stored by the capacitor is measured in Farads but usually in the range from nanofarads to millifarads. .Aluminium capacitors are used where high capacitance values to provide smoothing and filtering functions in the circuit. Commonly used in DC Power supplies due to their large capacitance and their compact size which helps to reduce the ripple voltage. Aluminium Electrolytic capacitors have reasonable Equivalent Series Resistance (ESR) but have the lowest leakage current from all capacitor types.


Polymer Electrolytic Capacitors


Polymer capacitors (also are known as polymer electrolytic capacitors or polymer e caps) have conductive polymer as their electrolyte material within a layered aluminium design. These capacitors combine unique properties from the polymer material in terms of high conductivity, extended temperature range and no risk of drying out – to make a capacitor that offers large capacitance and very low ESR (equivalent series resistance) with high ripple current capability and offer a longer operating life. Polymer capacitors offer a lot of package options between 2.2 to 470 microfarad


Hybrid Capacitors


Hybrid capacitors (polymer hybrid aluminium capacitors) are a mix of wet electrolyte and solid polymer. In this sense, they combine the best of both electrolytes. These capacitors offer high endurance, low ESR, and a high tolerance for ripple current. Hybrid capacitors also feature stable electric characteristics at high frequencies whilst maintaining reliability. The liquid electrolyte keeps the Leakage current very low and also allows self-repairing of the aluminium foils which prevent a drop in capacitance.


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RS Stock No. 170-1273
BrandRS PRO
$0.391
Each (In a Bag of 500)
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220µF Electrolytic 63V dc Through Hole 10 (Dia.) x 20mm 20mm 20mm - 10mm -40°C +105°C - 5mm 2000h
RS Stock No. 170-1044
BrandRS PRO
$0.039
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330nF Electrolytic 50V dc Through Hole 4 (Dia.) x 7mm 7mm 7mm - 4mm -40°C +105°C - 1.5mm 1000h
RS Stock No. 711-1624
BrandRS PRO
$0.964
Each (In a Pack of 10)
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470µF Electrolytic 63V dc Through Hole 13 (Dia.) x 26mm 26mm 26mm - 13mm -40°C +105°C - 5mm 2000h
RS Stock No. 711-1328
BrandRS PRO
$0.799
Each (In a Pack of 10)
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1000µF Electrolytic 35V dc Through Hole 13 (Dia.) x 16mm 16mm 16mm - 13mm -40°C +105°C - 5mm 2000h
RS Stock No. 170-1059
BrandRS PRO
$0.045
Each (In a Bag of 1000)
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100µF Electrolytic 10V dc Through Hole 5 (Dia.) x 7mm 7mm 7mm - 5mm -40°C +105°C - 2mm 1000h
RS Stock No. 170-1189
BrandRS PRO
$0.039
Each (In a Bag of 1000)
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10µF Electrolytic 25V dc Through Hole 5 (Dia.) x 11mm 11mm 11mm - 5mm -40°C +105°C - 2mm 1000h
RS Stock No. 170-1264
BrandRS PRO
$9.001
Each (In a Bag of 25)
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10000µF Electrolytic 50V dc Through Hole 25 (Dia.) x 50mm 50mm 50mm - 25mm -40°C +105°C - 12mm 2000h
RS Stock No. 711-1078
BrandRS PRO
$0.08
Each (In a Pack of 100)
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10µF Electrolytic 25V dc Through Hole 5 (Dia.) x 11mm 11mm 11mm - 5mm -40°C +105°C - 2mm 1000h
RS Stock No. 707-5648
BrandRS PRO
$0.083
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100nF Electrolytic 50V dc Through Hole 4 (Dia.) x 7mm 7mm 7mm - 4mm -40°C +105°C - 1.5mm 1000h
RS Stock No. 711-1671
BrandRS PRO
$0.078
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1µF Electrolytic 100V dc Through Hole 5 (Dia.) x 11mm 11mm 11mm - 5mm -40°C +105°C - 2mm 1000h
RS Stock No. 711-1536
BrandRS PRO
$12.635
Each (In a Pack of 2)
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10000µF Electrolytic 50V dc Through Hole 25 (Dia.) x 50mm 50mm 50mm - 25mm -40°C +105°C - 12mm 2000h
RS Stock No. 711-2096
BrandRS PRO
$3.505
Each (In a Pack of 2)
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100µF Electrolytic 400V dc Through Hole 18 (Dia.) x 31mm 31mm 31mm - 18mm -25°C +105°C - 7.5mm 2000h
RS Stock No. 711-1602
BrandRS PRO
$0.471
Each (In a Pack of 25)
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100µF Electrolytic 63V dc Through Hole 10 (Dia.) x 12mm 12mm 12mm - 10mm -40°C +105°C - 5mm 2000h
RS Stock No. 170-1272
BrandRS PRO
$0.235
Each (In a Bag of 1000)
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100µF Electrolytic 63V dc Through Hole 10 (Dia.) x 12mm 12mm 12mm - 10mm -40°C +105°C - 5mm 2000h
RS Stock No. 707-6580
BrandRS PRO
$1.212
Each (In a Pack of 5)
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220µF Electrolytic 63V dc Through Hole 13 (Dia.) x 22mm 22mm 22mm - 13mm -40°C +105°C - - 1000h
RS Stock No. 711-1019
BrandRS PRO
$0.878
Each (In a Pack of 10)
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3300µF Electrolytic 16V dc Through Hole 13 (Dia.) x 21mm 21mm 21mm - 13mm -40°C +105°C - 5mm 2000h
RS Stock No. 170-1285
BrandRS PRO
$0.078
Each (In a Bag of 1000)
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10µF Electrolytic 100V dc Through Hole 6.3 (Dia.) x 11mm 11mm 11mm - 6.3mm -40°C +105°C - 2.5mm 1000h
RS Stock No. 706-3373
BrandRS PRO
$7.90
Each
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680µF Electrolytic 250V dc Through Hole 30 (Dia.) x 45mm 45mm 45mm - 30mm -25°C +105°C - 10mm 2000h
RS Stock No. 711-1693
BrandRS PRO
$0.132
Each (In a Pack of 50)
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10µF Electrolytic 100V dc Through Hole 6.3 (Dia.) x 11mm 11mm 11mm - 6.3mm -40°C +105°C - 2.5mm 1000h
RS Stock No. 170-1183
BrandRS PRO
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3300µF Electrolytic 16V dc Through Hole 13 (Dia.) x 21mm 21mm 21mm - 13mm -40°C +105°C - 5mm 2000h
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