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. 707-6281
BrandRS PRO
MYR3.003
Each (In a Pack of 10)
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1µF Electrolytic 350V dc Through Hole 8 (Dia.) x 16mm 16mm 16mm - 8mm -25°C +105°C - - 1000h
RS Stock No. 170-1068
BrandRS PRO
MYR1.547
Each (In a Bag of 500)
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1µF Electrolytic 350V dc Through Hole 8 (Dia.) x 16mm 16mm 16mm - 8mm -25°C +105°C - - 1000h
RS Stock No. 173-0285
BrandRS PRO
MYR6.485
Each (In a Bag of 1000)
units
6800µF Electrolytic 50V dc Through Hole 25 (Dia.) x 44mm 44mm 44mm - 25mm -40°C +105°C - 12mm 2000h
RS Stock No. 711-1539
BrandRS PRO
MYR5.875
Each (In a Pack of 2)
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6800µF Electrolytic 50V dc Through Hole 25 (Dia.) x 44mm 44mm 44mm - 25mm -40°C +105°C - 12mm 2000h
RS Stock No. 711-1236
BrandRS PRO
MYR0.103
Each (In a Pack of 100)
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10µF Electrolytic 35V dc Through Hole 5 (Dia.) x 11mm 11mm 11mm - 5mm -40°C +105°C - 2mm 1000h
RS Stock No. 170-1212
BrandRS PRO
MYR0.07
Each (In a Bag of 1000)
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10µF Electrolytic 35V dc Through Hole 5 (Dia.) x 11mm 11mm 11mm - 5mm -40°C +105°C - 2mm 1000h
RS Stock No. 170-1262
BrandRS PRO
MYR6.564
Each (In a Bag of 25)
units
4700µF Electrolytic 50V dc Through Hole 22 (Dia.) x 42mm 42mm 42mm - 22mm -40°C +105°C - 10mm 2000h
RS Stock No. 711-1526
BrandRS PRO
MYR7.41
Each (In a Pack of 2)
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4700µF Electrolytic 50V dc Through Hole 22 (Dia.) x 42mm 42mm 42mm - 22mm -40°C +105°C - 10mm 2000h
RS Stock No. 711-2096
BrandRS PRO
MYR4.05
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. 173-0255
BrandRS PRO
MYR0.052
Each (In a Bag of 1000)
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100nF Electrolytic 50V dc Through Hole 5 (Dia.) x 11mm 11mm 11mm - 5mm -40°C +105°C - 2mm 1000h
RS Stock No. 711-1396
BrandRS PRO
MYR0.104
Each (In a Pack of 100)
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100nF Electrolytic 50V dc Through Hole 5 (Dia.) x 11mm 11mm 11mm - 5mm -40°C +105°C - 2mm 1000h
RS Stock No. 711-2071
BrandRS PRO
MYR7.66
Each (In a Pack of 5)
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47µF Electrolytic 400V dc Through Hole 16 (Dia.) x 26mm 26mm 26mm - 16mm -25°C +105°C - 7.5mm 2000h
RS Stock No. 711-1312
BrandRS PRO
MYR1.222
Each (In a Pack of 10)
units
1000µF Electrolytic 35V dc Through Hole 10 (Dia.) x 20mm 20mm 20mm - 10mm -40°C +105°C - 5mm 2000h
RS Stock No. 170-1226
BrandRS PRO
MYR0.804
Each (In a Bag of 500)
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1000µF Electrolytic 35V dc Through Hole 10 (Dia.) x 20mm 20mm 20mm - 10mm -40°C +105°C - 5mm 2000h
RS Stock No. 173-0282
BrandRS PRO
MYR3.676
Each (In a Bag of 100)
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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. 711-0977
BrandRS PRO
MYR0.676
Each (In a Pack of 25)
units
1000µF Electrolytic 16V dc Through Hole 8 (Dia.) x 16mm 16mm 16mm - 8mm -40°C +105°C - 3.5mm 2000h
RS Stock No. 170-1196
BrandRS PRO
MYR0.248
Each (In a Bag of 1000)
units
470µF Electrolytic 25V dc Through Hole 8 (Dia.) x 14mm 14mm 14mm - 8mm -40°C +105°C - 3.5mm 2000h
RS Stock No. 170-1174
BrandRS PRO
MYR0.372
Each (In a Bag of 1000)
units
1000µF Electrolytic 16V dc Through Hole 8 (Dia.) x 16mm 16mm 16mm - 8mm -40°C +105°C - 3.5mm 2000h
RS Stock No. 711-1110
BrandRS PRO
MYR0.531
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. 173-0274
BrandRS PRO
MYR0.49
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