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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Description Price Capacitance Technology Voltage Mounting Type Dimensions Height Length Depth Diameter Minimum Operating Temperature Maximum Operating Temperature Construction Lead Pitch Lifetime
RS Stock No. 568-745
Mfr. Part No.EEEFP1E471AP
BrandPanasonic
$1.498
Each (In a Pack of 5)
units
470 µF Electrolytic 25 V dc Surface Mount 10 (Dia.) x 10.2mm 10.2mm - - 10mm -55°C +105°C - - 2000h
RS Stock No. 747-9210
Mfr. Part No.EEEFP1E471AP
BrandPanasonic
$0.577
Each (On a Reel of 500)
units
470 µF Electrolytic 25 V dc Surface Mount 10 (Dia.) x 10.2mm 10.2mm - - 10mm -55°C +105°C - - 2000h
RS Stock No. 170-1196
BrandRS PRO
$0.168
Each (In a Bag of 1000)
units
470 µF Electrolytic 25 V dc Through Hole 8 (Dia.) x 14mm 14mm 14mm - 8mm -40°C +105°C - 3.5mm 2000h
RS Stock No. 711-1110
BrandRS PRO
$0.24
Each (In a Pack of 25)
units
470 µF Electrolytic 25 V dc Through Hole 8 (Dia.) x 14mm 14mm 14mm - 8mm -40°C +105°C - 3.5mm 2000h
RS Stock No. 744-1262
Mfr. Part No.SLP102M100C1P3
$5.64
Each
units
1000 µF Electrolytic 100 V dc Through Hole 25 (Dia.) x 25mm 25mm - - 25mm -40°C +105°C - 10mm 3000h
RS Stock No. 123-4297
Mfr. Part No.ALS31A104KF025
BrandKEMET
$57.17
Each
units
0.1 F Electrolytic 25 V dc Screw Mount 51 (Dia.) x 105mm - - 105mm 51mm -40°C +85°C - 22.2mm 36000h
RS Stock No. 871-2710
Mfr. Part No.SLPX103M063H7P3
$8.94
Each
units
10000 µF Electrolytic 63 V dc Through Hole 35 x 40mm - 40mm - 35mm -40°C +85°C - 10mm 1000 (Shelf) h, 3000 (Endurance) h
RS Stock No. 144-8422
Mfr. Part No.ALS31A104KF025
BrandKEMET
$48.465
Each (In a Box of 24)
units
0.1 F Electrolytic 25 V dc Screw Mount 51 (Dia.) x 105mm - - 105mm 51mm -40°C +85°C - 22.2mm 36000h
RS Stock No. 170-1261
BrandRS PRO
$2.016
Each (In a Bag of 100)
units
3300 µF Electrolytic 50 V dc Through Hole 18 (Dia.) x 36mm 36mm 36mm - 18mm -40°C +105°C - 7.5mm 2000h
RS Stock No. 744-1168
Mfr. Part No.SLPX103M050E7P3
$7.55
Each
units
10000 µF Electrolytic 50 V dc Through Hole 30 (Dia.) x 40mm 40mm - - 30mm -40°C +85°C - 10mm 3000h
RS Stock No. 172-7499
Mfr. Part No.35YXH470MEFC10X20
BrandRubycon
$0.364
Each (In a Box of 1000)
units
470 µF Electrolytic 35 V dc Through Hole 10 (Dia.) x 20mm 20mm - - 10mm -40°C +105°C - 5mm 7000h
RS Stock No. 715-3072
Mfr. Part No.UPW2A102MHD
BrandNichicon
$4.51
Each
units
1000 µF Electrolytic 100 V dc Through Hole 18 (Dia.) x 40mm 40mm - - 18mm -55°C +105°C - 7.5mm 8000h
RS Stock No. 108-4653
Mfr. Part No.EEUFR1E102L
BrandPanasonic
$0.773
Each (In a Bag of 200)
units
1000 µF Electrolytic 25 V dc Through Hole 10 (Dia.) x 25mm 25mm - - 10mm -40°C +105°C - 5mm 10000h
RS Stock No. 704-8040
Mfr. Part No.35YXH470MEFC10X20
BrandRubycon
$0.884
Each (In a Pack of 10)
units
470 µF Electrolytic 35 V dc Through Hole 10 (Dia.) x 20mm 20mm - - 10mm -40°C +105°C - 5mm 7000h
RS Stock No. 167-8140
Mfr. Part No.UPW2A102MHD
BrandNichicon
$2.922
Each (In a Box of 50)
units
1000 µF Electrolytic 100 V dc Through Hole 18 (Dia.) x 40mm 40mm - - 18mm -55°C +105°C - 7.5mm 8000h
RS Stock No. 711-2150
BrandRS PRO
$2.65
Each (In a Pack of 2)
units
47 µF Electrolytic 450 V dc Through Hole 16 (Dia.) x 36mm 36mm 36mm - 16mm -25°C +105°C - 7.5mm 2000h
RS Stock No. 173-0281
BrandRS PRO
$2.016
Each (In a Bag of 100)
units
47 µF Electrolytic 450 V dc Through Hole 16 (Dia.) x 36mm 36mm 36mm - 16mm -25°C +105°C - 7.5mm 2000h
RS Stock No. 711-1523
BrandRS PRO
$3.21
Each (In a Pack of 2)
units
3300 µF Electrolytic 50 V dc Through Hole 18 (Dia.) x 36mm 36mm 36mm - 18mm -40°C +105°C - 7.5mm 2000h
RS Stock No. 708-3746
Mfr. Part No.EEUFR1E102L
BrandPanasonic
$1.408
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. 490-9901
Mfr. Part No.UHE1E470MDD
BrandNichicon
$0.486
Each (In a Pack of 5)
units
47 µF Electrolytic 25 V dc Through Hole 5 (Dia.) x 11mm 11mm - - 5mm -40°C +105°C - 2mm 5000h
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