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. 707-5852
Brand :RS PRO
THB8.13
Each: (In a Pack of 25)
Units
470µF Electrolytic 6.3V dc Through Hole 8 (Dia.) x 7mm 7mm 7mm - 8mm -40°C +105°C - 3.5mm 1000h
RS Stock No. 711-1110
Brand :RS PRO
THB4.505
Each: (In a Pack of 25)
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470µF Electrolytic 25V dc Through Hole 8 (Dia.) x 14mm 14mm 14mm - 8mm -40°C +105°C - 3.5mm 2000h
RS Stock No. 170-1196
Brand :RS PRO
THB3.35
Each (In a Bag of 1000)
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470µF Electrolytic 25V dc Through Hole 8 (Dia.) x 14mm 14mm 14mm - 8mm -40°C +105°C - 3.5mm 2000h
RS Stock No. 711-1693
Brand :RS PRO
THB2.876
Each: (In a Pack of 50)
Units
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. 170-1285
Brand :RS PRO
THB1.675
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. 711-1479
Brand :RS PRO
THB11.308
Each: (In a Pack of 10)
Units
470µF Electrolytic 50V dc Through Hole 13 (Dia.) x 21mm 21mm 21mm - 13mm -40°C +105°C - 5mm 2000h
RS Stock No. 170-1193
Brand :RS PRO
THB1.675
Each (In a Bag of 1000)
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220µF Electrolytic 25V dc Through Hole 6 (Dia.) x 11mm 11mm 11mm - 6mm -40°C +105°C - 2.5mm 1000h
RS Stock No. 711-1097
Brand :RS PRO
THB2.719
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Units
220µF Electrolytic 25V dc Through Hole 6 (Dia.) x 11mm 11mm 11mm - 6mm -40°C +105°C - 2.5mm 1000h
RS Stock No. 170-1242
Brand :RS PRO
THB0.784
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1µF Electrolytic 50V dc Through Hole 5 (Dia.) x 11mm 11mm 11mm - 5mm -40°C +105°C - 2mm 1000h
RS Stock No. 706-3314
Brand :RS PRO
THB85.61
Each
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220µF Electrolytic 400V dc Through Hole 25 (Dia.) x 45mm 45mm 45mm - 25mm -25°C +105°C - 10mm 2000h
RS Stock No. 711-1407
Brand :RS PRO
THB1.723
Each: (In a Pack of 100)
Units
1µF Electrolytic 50V dc Through Hole 5 (Dia.) x 11mm 11mm 11mm - 5mm -40°C +105°C - 2mm 1000h
RS Stock No. 173-0289
Brand :RS PRO
THB147.246
Each (In a Bag of 100)
Units
220µF Electrolytic 400V dc Through Hole 25 (Dia.) x 45mm 45mm 45mm - 25mm -25°C +105°C - 10mm 2000h
RS Stock No. 170-1256
Brand :RS PRO
THB11.712
Each (In a Bag of 250)
Units
470µF Electrolytic 50V dc Through Hole 13 (Dia.) x 21mm 21mm 21mm - 13mm -40°C +105°C - 5mm 2000h
RS Stock No. 170-1151
Brand :RS PRO
THB4.907
Each (In a Bag of 500)
Units
2200µF Electrolytic 6.3V dc Through Hole 10 (Dia.) x 17mm 17mm 17mm - 10mm -40°C +105°C - 5mm 2000h
RS Stock No. 711-1107
Brand :RS PRO
THB3.131
Each: (In a Pack of 50)
Units
220µF Electrolytic 25V dc Through Hole 8 (Dia.) x 11mm 11mm 11mm - 8mm -40°C +105°C - 3.5mm 2000h
RS Stock No. 711-0927
Brand :RS PRO
THB1.616
Each: (In a Pack of 100)
Units
47µF Electrolytic 16V dc Through Hole 5 (Dia.) x 11mm 11mm 11mm - 5mm -40°C +105°C - 2mm 1000h
RS Stock No. 711-0747
Brand :RS PRO
THB10.474
Each: (In a Pack of 25)
Units
2200µF Electrolytic 6.3V dc Through Hole 10 (Dia.) x 17mm 17mm 17mm - 10mm -40°C +105°C - 5mm 2000h
RS Stock No. 170-1195
Brand :RS PRO
THB2.904
Each (In a Bag of 1000)
Units
220µF Electrolytic 25V dc Through Hole 8 (Dia.) x 11mm 11mm 11mm - 8mm -40°C +105°C - 3.5mm 2000h
RS Stock No. 170-1217
Brand :RS PRO
THB1.898
Each (In a Bag of 1000)
Units
220µF Electrolytic 35V dc Through Hole 8 (Dia.) x 11mm 11mm 11mm - 8mm -40°C +105°C - 3.5mm 2000h
RS Stock No. 170-1165
Brand :RS PRO
THB0.769
Each (In a Bag of 1000)
Units
47µF Electrolytic 16V dc Through Hole 5 (Dia.) x 11mm 11mm 11mm - 5mm -40°C +105°C - 2mm 1000h
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