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. 163-6733
Mfr. Part No.860080478020
TWD20.10
Each (In a Box of 300)
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1000 µF Electrolytic 25 V dc Through Hole 13 (Dia.) x 20mm 20mm - - 13mm -55°C +105°C - 5mm 5000h
RS Stock No. 840-0203
Mfr. Part No.860080478020
TWD30.60
Each (In a Bag of 5)
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1000 µF Electrolytic 25 V dc Through Hole 13 (Dia.) x 20mm 20mm - - 13mm -55°C +105°C - 5mm 5000h
RS Stock No. 108-4653
Mfr. Part No.EEUFR1E102L
BrandPanasonic
TWD10.40
Each (In a Bag of 200)
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1000 µF Electrolytic 25 V dc Through Hole 10 (Dia.) x 25mm 25mm - - 10mm -40°C +105°C - 5mm 10000h
RS Stock No. 708-3746
Mfr. Part No.EEUFR1E102L
BrandPanasonic
TWD28.40
Each (In a Pack of 5)
units
1000 µF Electrolytic 25 V dc Through Hole 10 (Dia.) x 25mm 25mm - - 10mm -40°C +105°C - 5mm 10000h
RS Stock No. 162-0325
Mfr. Part No.LGU2C102MELA
BrandNichicon
TWD58.40
Each (In a Bag of 250)
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1000 µF Electrolytic 160 V dc Through Hole 25 (Dia.) x 40mm 40mm - - 25mm -40°C +105°C - 10mm 3000h
RS Stock No. 519-3618
Mfr. Part No.LGU2C102MELA
BrandNichicon
TWD157.00
Each
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1000 µF Electrolytic 160 V dc Through Hole 25 (Dia.) x 40mm 40mm - - 25mm -40°C +105°C - 10mm 3000h
RS Stock No. 165-3774
Mfr. Part No.LGL2W681MELC45
BrandNichicon
TWD396.40
Each (In a Bag of 200)
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680 µF Electrolytic 450 V dc Through Hole 35 (Dia.) x 45mm 45mm - - 35mm -25°C +105°C - 10mm 2000h
RS Stock No. 714-8629
Mfr. Part No.LGL2W681MELC45
BrandNichicon
TWD528.00
Each
units
680 µF Electrolytic 450 V dc Through Hole 35 (Dia.) x 45mm 45mm - - 35mm -25°C +105°C - 10mm 2000h
RS Stock No. 714-9418
Mfr. Part No.PLV1H470MDL1
BrandNichicon
TWD55.00
Each
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47 µF Polymer 50 V dc Through Hole 10 (Dia.) x 13mm 13mm - - 10mm -55°C +105°C - 5mm 3000h
RS Stock No. 763-9728
Mfr. Part No.PLX1H220MCL1
BrandNichicon
TWD52.00
Each
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22 µF Polymer 50 V dc Through Hole 8 (Dia.) x 8.5mm 8.5mm - - 8mm -55°C +125°C - 3.5mm 3000h
RS Stock No. 173-3378
Mfr. Part No.PLX1H220MCL1
BrandNichicon
TWD44.70
Each (In a Box of 200)
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22 µF Polymer 50 V dc Through Hole 8 (Dia.) x 8.5mm 8.5mm - - 8mm -55°C +125°C - 3.5mm 3000h
RS Stock No. 703-7507
Mfr. Part No.16ZLH1800MEFC10X23
BrandRubycon
TWD28.00
Each (In a Pack of 5)
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1800 µF Electrolytic 16 V dc Through Hole 10 (Dia.) x 23mm 23mm - - 10mm -40°C +105°C - 5mm 10000h
RS Stock No. 173-3389
Mfr. Part No.PLV1H470MDL1
BrandNichicon
TWD57.30
Each (In a Box of 200)
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47 µF Polymer 50 V dc Through Hole 10 (Dia.) x 13mm 13mm - - 10mm -55°C +105°C - 5mm 3000h
RS Stock No. 490-9715
Mfr. Part No.UHE1A822MHD
BrandNichicon
TWD58.80
Each (In a Pack of 5)
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8200 µF Electrolytic 10 V dc Through Hole 16 (Dia.) x 35.5mm 35.5mm - - 16mm -40°C +105°C - 7.5mm 8000h
RS Stock No. 107-1026
Mfr. Part No.EEEHBH101UAP
BrandPanasonic
TWD11.00
Each (On a Reel of 500)
units
100 µF Electrolytic 50 V dc Surface Mount 10 (Dia.) x 10.2mm 10.2mm - - 10mm -40°C +105°C - - 2000h
RS Stock No. 569-029
Mfr. Part No.EEEHBH101UAP
BrandPanasonic
TWD26.40
Each (In a Pack of 5)
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100 µF Electrolytic 50 V dc Surface Mount 10 (Dia.) x 10.2mm 10.2mm - - 10mm -40°C +105°C - - 2000h
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Mfr. Part No.ALP20A222BB063
BrandKEMET
TWD215.00
Each
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Mfr. Part No.ALP20A222BB063
BrandKEMET
TWD345.90
Each (In a Bag of 160)
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2200 µF Electrolytic 63 V dc Through Hole 30 x 45mm 45mm 45mm - 30mm -40°C +85°C - - 15000 h @ +85 °C/63V dc/Ir
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Mfr. Part No.ECA1HHG222
BrandPanasonic
TWD53.60
Each (In a Pack of 5)
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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
RS Stock No. 108-4097
Mfr. Part No.ECA1HHG222
BrandPanasonic
TWD30.30
Each (In a Bag of 50)
units
2200 µF Electrolytic 50 V dc Through Hole 16 (Dia.) x 31.5mm 31.5mm - - 16mm -55°C +105°C - 7.5mm 2000h