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庫存編號 365-4054
製造零件編號ECA1AHG682
BrandPanasonic
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6800 µF Electrolytic 10 V dc Through Hole 16 (Dia.) x 25mm 25mm - - 16mm -55°C +105°C - 7.5mm 2000h
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2200 µF Electrolytic 50 V dc Through Hole 18 (Dia.) x 35.5mm 35.5mm - - 18mm -55°C +105°C - 7.5mm 5000h
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製造零件編號EKY-250ELL101MF11D
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100 µF Electrolytic 25 V dc Through Hole 6.3 x 11mm - 11mm - 6.3mm -40°C +105°C - 2.5mm 5000h
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6800 µF Electrolytic 10 V dc Through Hole 16 (Dia.) x 25mm 25mm - - 16mm -55°C +105°C - 7.5mm 2000h
RS庫存編號 749-2380
製造零件編號MAL215947221E3
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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
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製造零件編號EEUFC1E221
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220 µF Electrolytic 25 V dc Through Hole 8 (Dia.) x 11.5mm 11.5mm - - 8mm -55°C +105°C - 3.5mm 2000h
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製造零件編號EEUEE2W150
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15 µF Electrolytic 450 V dc Through Hole 12.5 (Dia.) x 25mm 25mm - - 12.5mm -25°C +105°C - 5mm 10000h
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製造零件編號EEUEE2W150
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HK$10.486
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15 µF Electrolytic 450 V dc Through Hole 12.5 (Dia.) x 25mm 25mm - - 12.5mm -25°C +105°C - 5mm 10000h
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220 µF Electrolytic 25 V dc Through Hole 8 (Dia.) x 11.5mm 11.5mm - - 8mm -55°C +105°C - 3.5mm 2000h
RS庫存編號 381-9188
製造零件編號ALS30A103KE100
BrandKEMET
HK$219.57
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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
RS庫存編號 173-3498
製造零件編號B41560A8229M000
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22000 µF Electrolytic 63 V dc Screw Mount 51.6 (Dia.) x 105.7mm 105.7mm - - 51.6mm -40°C +105°C - - 3000h
RS庫存編號 315-0754
製造零件編號EEUFC1V102
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HK$8.698
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1000 µF Electrolytic 35 V dc Through Hole 12.5 (Dia.) x 25mm 25mm - - 12.5mm -55°C +105°C - 5mm 5000h
RS庫存編號 108-1339
製造零件編號EEUFC1V102
BrandPanasonic
HK$4.528
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1000 µF Electrolytic 35 V dc Through Hole 12.5 (Dia.) x 25mm 25mm - - 12.5mm -55°C +105°C - 5mm 5000h
RS庫存編號 519-4059
製造零件編號UPS1E101MED
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100 µF Electrolytic 25 V dc Through Hole 6.3 (Dia.) x 11mm 11mm - - 6.3mm -55°C +105°C - 2.5mm 2000h
RS庫存編號 171-0679
製造零件編號UPS1E101MED
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100 µF Electrolytic 25 V dc Through Hole 6.3 (Dia.) x 11mm 11mm - - 6.3mm -55°C +105°C - 2.5mm 2000h
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製造零件編號B41560A8229M000
BrandEPCOS
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22000 µF Electrolytic 63 V dc Screw Mount 51.6 (Dia.) x 105.7mm 105.7mm - - 51.6mm -40°C +105°C - - 3000h
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製造零件編號450BXC22MEFC12.5X25
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22 µF Electrolytic 450 V dc Through Hole 12.5 (Dia.) x 25mm 25mm - - 12.5mm -25°C +105°C - 5mm 12000h
RS庫存編號 490-9888
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BrandNichicon
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8200 µF Electrolytic 16 V dc Through Hole 18 (Dia.) x 35.5mm 35.5mm - - 18mm -40°C +105°C - 7.5mm 10000h
RS庫存編號 172-6344
製造零件編號450BXC22MEFC12.5X25
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22 µF Electrolytic 450 V dc Through Hole 12.5 (Dia.) x 25mm 25mm - - 12.5mm -25°C +105°C - 5mm 12000h
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製造零件編號ALS30A103KE100
BrandKEMET
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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