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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N° de stock RS 173-1991
Référence fabricantALS30A103KE100
MarqueKEMET
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10000 µF Electrolytic 100 V dc Screw Mount 51 x 82mm 82mm 82mm - 51mm -40°C +85°C - - 18000 h @ +85 °C/100V dc/Ir, 36000 h @ +85 °C/100V dc
N° de stock RS 107-2729
Référence fabricantEEUFC1H100L
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0,08 €
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10 µF Electrolytic 50 V dc Through Hole 5 (Dia.) x 11mm 11mm - - 5mm -55°C +105°C 2mm - 1000h
N° de stock RS 107-9626
Référence fabricantEEUFC1E471
MarquePanasonic
0,295 €
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470 µF Electrolytic 25 V dc Through Hole 10 (Dia.) x 16mm 16mm - - 10mm -55°C +105°C 5mm - 3000h
N° de stock RS 315-0574
Référence fabricantEEUFC1E471
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0,534 €
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470 µF Electrolytic 25 V dc Through Hole 10 (Dia.) x 16mm 16mm - - 10mm -55°C +105°C 5mm - 3000h
N° de stock RS 519-4396
Référence fabricantUPS1J100MDD
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10 µF Electrolytic 63 V dc Through Hole 5 (Dia.) x 11mm 11mm - - 5mm -55°C +105°C 2mm - 2000h
N° de stock RS 862-3392
Référence fabricantUVR2A0R1MDD
MarqueNichicon
0,15 €
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100 nF Electrolytic 100 V dc Through Hole 5 x 11mm 11mm - - 5mm -40°C +85°C 2mm - 2000h
N° de stock RS 315-0669
Référence fabricantEEUFC1E472
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4700 µF Electrolytic 25 V dc Through Hole 18 (Dia.) x 35.5mm 35.5mm - - 18mm -55°C +105°C 7.5mm - 5000h
N° de stock RS 167-1491
Référence fabricantLGL2G561MELB40
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560 µF Electrolytic 400 V dc Through Hole 30 (Dia.) x 40mm 40mm - - 30mm -25°C +105°C 10mm - 2000h
N° de stock RS 167-1509
Référence fabricantLGL2W471MELB45
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470 µF Electrolytic 450 V dc Through Hole 30 (Dia.) x 45mm 45mm - - 30mm -25°C +105°C 10mm - 2000h
N° de stock RS 920-5125
Référence fabricantEEUFM1H220
MarquePanasonic
0,088 €
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22 µF Electrolytic 50 V dc Through Hole 5 (Dia.) x 11mm 11mm - - 5mm -40°C +105°C 2mm - 2000h
N° de stock RS 173-3946
Référence fabricantUVR2A0R1MDD
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0,065 €
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100 nF Electrolytic 100 V dc Through Hole 5 x 11mm 11mm - - 5mm -40°C +85°C 2mm - 2000h
N° de stock RS 846-6861
Référence fabricantLGL2G561MELB40
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560 µF Electrolytic 400 V dc Through Hole 30 (Dia.) x 40mm 40mm - - 30mm -25°C +105°C 10mm - 2000h
N° de stock RS 749-2380
Référence fabricantMAL215947221E3
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16,82 €
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220 µF Electrolytic 450 V dc Through Hole 30 (Dia.) x 40mm 40mm - - 30mm -25°C +105°C 10mm - 2000 h, 5000 h, 500000 h
N° de stock RS 108-0519
Référence fabricantEEUFC1E472
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1,447 €
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4700 µF Electrolytic 25 V dc Through Hole 18 (Dia.) x 35.5mm 35.5mm - - 18mm -55°C +105°C 7.5mm - 5000h
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2200 µF Electrolytic 50 V dc Through Hole 16 (Dia.) x 31.5mm 31.5mm - - 16mm -55°C +105°C 7.5mm - 2000h
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2200 µF Electrolytic 50 V dc Through Hole 16 (Dia.) x 31.5mm 31.5mm - - 16mm -55°C +105°C 7.5mm - 2000h
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Référence fabricantLGL2W471MELB45
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0,54 €
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220 µF Electrolytic 50 V dc Through Hole 10 (Dia.) x 16mm 16mm - - 10mm -40°C +105°C 5mm - 10000h
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Référence fabricantALS30A471DE400
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470 µF Electrolytic 400 V dc Screw Mount 36 x 82mm 82mm 82mm - 36mm -40°C +85°C - - 11000 h @ +85 °C/400V dc/Ir, 22000 h @ +85 °C/400V dc