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 106-2868
製造零件編號EEEFK1E681SP
BrandPanasonic
HK$4.63
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680 µF Electrolytic 25 V dc Surface Mount 10 (Dia.) x 10.2mm - - 10.2mm 10mm -55°C +105°C - 4.6mm 2000h
RS庫存編號 122-3678
製造零件編號EEEFK1E681SP
BrandPanasonic
HK$2.695
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680 µF Electrolytic 25 V dc Surface Mount 10 (Dia.) x 10.2mm - - 10.2mm 10mm -55°C +105°C - 4.6mm 2000h
RS庫存編號 751-1162
製造零件編號450BXC15MEFC12.5X25
BrandRubycon
HK$8.70
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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 12000h
RS庫存編號 172-8057
製造零件編號450BXC15MEFC12.5X25
BrandRubycon
HK$5.504
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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 12000h
RS庫存編號 449-1006
製造零件編號EEAFC1E100
BrandPanasonic
HK$2.288
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10 µF Electrolytic 25 V dc Through Hole 4 (Dia.) x 7mm 7mm - - 4mm -55°C +105°C - 1.5mm 1000h
RS庫存編號 173-5139
製造零件編號PEH200KC5150MB2
BrandKEMET
HK$160.10
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15000 µF Electrolytic 40 V dc Screw Mount 36.6 x 76.5mm 76.5mm 76.5mm - 36.6mm -40°C +85°C - - 10000 h @ +85 °C/40V dc/Ir
RS庫存編號 920-4888
製造零件編號EEAFC1E100
BrandPanasonic
HK$0.866
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10 µF Electrolytic 25 V dc Through Hole 4 (Dia.) x 7mm 7mm - - 4mm -55°C +105°C - 1.5mm 1000h
RS庫存編號 434-0649
製造零件編號PEH200KC5150MB2
BrandKEMET
HK$140.85
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15000 µF Electrolytic 40 V dc Screw Mount 36.6 x 76.5mm 76.5mm 76.5mm - 36.6mm -40°C +85°C - - 10000 h @ +85 °C/40V dc/Ir
RS庫存編號 117-035
製造零件編號ECEA1HKS100
BrandPanasonic
HK$0.764
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10 µF Electrolytic 50 V dc Through Hole 6.3 (Dia.) x 5mm 5mm - - 6.3mm -40°C +85°C - 2.5mm 1000h
RS庫存編號 107-3070
製造零件編號EEUFC1H470
BrandPanasonic
HK$0.785
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47 µF Electrolytic 50 V dc Through Hole 6.3 (Dia.) x 11.2mm 11.2mm - - 6.3mm -55°C +105°C - 2.5mm 1000h
RS庫存編號 919-0461
製造零件編號ECEA1HKS100
BrandPanasonic
HK$0.652
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10 µF Electrolytic 50 V dc Through Hole 6.3 (Dia.) x 5mm 5mm - - 6.3mm -40°C +85°C - 2.5mm 1000h
RS庫存編號 572-198
製造零件編號EEUFC1H470
BrandPanasonic
HK$2.288
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47 µF Electrolytic 50 V dc Through Hole 6.3 (Dia.) x 11.2mm 11.2mm - - 6.3mm -55°C +105°C - 2.5mm 1000h
RS庫存編號 739-5210
製造零件編號UVY0J153MHD
BrandNichicon
HK$11.13
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15000 µF Electrolytic 6.3 V dc Through Hole 16 (Dia.) x 31.5mm 31.5mm - - 16mm -55°C +105°C - 7.5mm 1000h
RS庫存編號 162-0404
製造零件編號UVY0J153MHD
BrandNichicon
HK$10.212
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15000 µF Electrolytic 6.3 V dc Through Hole 16 (Dia.) x 31.5mm 31.5mm - - 16mm -55°C +105°C - 7.5mm 1000h
RS庫存編號 866-3817
製造零件編號EEFGX0E471R
BrandPanasonic
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RS庫存編號 166-6862
製造零件編號EEFGX0E471R
BrandPanasonic
HK$36,027.14
毎卷:3500 個
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RS庫存編號 173-3481
製造零件編號B43544A9827M000
BrandEPCOS
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820 µF Electrolytic 400 V dc Snap-In 35 (Dia.) x 55mm - 55mm - 35mm -40°C +105°C - 10mm >175000h
RS庫存編號 838-5006
製造零件編號B43544A9827M000
BrandEPCOS
HK$144.38
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820 µF Electrolytic 400 V dc Snap-In 35 (Dia.) x 55mm - 55mm - 35mm -40°C +105°C - 10mm >175000h
RS庫存編號 170-0502
製造零件編號EKY-250ELL101MF11D
HK$1,096.00
毎盒:2000 個
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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
RS庫存編號 315-0928
製造零件編號EEUFC1H222
BrandPanasonic
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