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. 170-1196
BrandRS PRO
$87.99
1 Bag of 1000
Bag(s)
470µF Electrolytic 25V 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
470µF Electrolytic 25V dc Through Hole 8 (Dia.) x 14mm 14mm 14mm - 8mm -40°C +105°C - 3.5mm 2000h
RS Stock No. 711-2150
BrandRS PRO
$0.945
Each (In a Pack of 2)
units
47µF Electrolytic 450V dc Through Hole 16 (Dia.) x 36mm 36mm 36mm - 16mm -25°C +105°C - 7.5mm 2000h
RS Stock No. 173-0281
BrandRS PRO
$1.067
Each (In a Bag of 100)
units
47µF Electrolytic 450V dc Through Hole 16 (Dia.) x 36mm 36mm 36mm - 16mm -25°C +105°C - 7.5mm 2000h
RS Stock No. 711-1523
BrandRS PRO
$3.175
Each (In a Pack of 2)
units
3300µF Electrolytic 50V dc Through Hole 18 (Dia.) x 36mm 36mm 36mm - 18mm -40°C +105°C - 7.5mm 2000h
RS Stock No. 170-1261
BrandRS PRO
$1.199
Each (In a Bag of 100)
units
3300µF Electrolytic 50V dc Through Hole 18 (Dia.) x 36mm 36mm 36mm - 18mm -40°C +105°C - 7.5mm 2000h
RS Stock No. 711-1510
BrandRS PRO
$2.32
Each (In a Pack of 2)
units
2200µF Electrolytic 50V dc Through Hole 18 (Dia.) x 36mm 36mm 36mm - 18mm -40°C +105°C - 7.5mm 2000h
RS Stock No. 173-0280
BrandRS PRO
$1.014
Each (In a Bag of 1000)
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2200µF Electrolytic 50V dc Through Hole 18 (Dia.) x 36mm 36mm 36mm - 18mm -40°C +105°C - 7.5mm 2000h
RS Stock No. 711-1532
BrandRS PRO
$11.46
Each (In a Pack of 2)
units
10000µF Electrolytic 50V dc Through Hole 25 (Dia.) x 42mm 42mm 42mm - 25mm -40°C +105°C - 12mm 2000h
RS Stock No. 170-1263
BrandRS PRO
$4.76
Each (In a Bag of 25)
units
10000µF Electrolytic 50V dc Through Hole 25 (Dia.) x 42mm 42mm 42mm - 25mm -40°C +105°C - 12mm 2000h
RS Stock No. 173-0263
BrandRS PRO
$0.076
Each (In a Bag of 1000)
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4.7µF Electrolytic 250V dc Through Hole 8 (Dia.) x 11mm 11mm 11mm - 8mm -25°C +105°C - 3.5mm 2000h
RS Stock No. 170-1238
BrandRS PRO
$1.402
Each (In a Bag of 100)
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4700µF Electrolytic 35V dc Through Hole 18 (Dia.) x 36mm 36mm 36mm - 18mm -40°C +105°C - 7.5mm 2000h
RS Stock No. 711-1321
BrandRS PRO
$0.849
Each (In a Pack of 10)
units
1000µF Electrolytic 35V dc Through Hole 10 (Dia.) x 25mm 25mm 25mm - 10mm -40°C +105°C - 5mm 2000h
RS Stock No. 170-1203
BrandRS PRO
$0.322
Each (In a Bag of 500)
units
2200µF Electrolytic 25V dc Through Hole 10 (Dia.) x 25mm 25mm 25mm - 10mm -40°C +105°C - 5mm 2000h
RS Stock No. 711-1160
BrandRS PRO
$1.003
Each (In a Pack of 10)
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2200µF Electrolytic 25V dc Through Hole 10 (Dia.) x 25mm 25mm 25mm - 10mm -40°C +105°C - 5mm 2000h
RS Stock No. 711-1374
BrandRS PRO
$4.25
Each (In a Pack of 2)
units
4700µF Electrolytic 35V dc Through Hole 18 (Dia.) x 36mm 36mm 36mm - 18mm -40°C +105°C - 7.5mm 2000h
RS Stock No. 711-1911
BrandRS PRO
$0.242
Each (In a Pack of 25)
units
4.7µF Electrolytic 250V dc Through Hole 8 (Dia.) x 11mm 11mm 11mm - 8mm -25°C +105°C - 3.5mm 2000h
RS Stock No. 170-1228
BrandRS PRO
$0.312
Each (In a Bag of 500)
units
1000µF Electrolytic 35V dc Through Hole 10 (Dia.) x 25mm 25mm 25mm - 10mm -40°C +105°C - 5mm 2000h
RS Stock No. 170-1326
BrandRS PRO
$1.746
Each (In a Bag of 100)
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100µF Electrolytic 450V dc Through Hole 18 (Dia.) x 36mm 36mm 36mm - 18mm -25°C +105°C - 7.5mm 2000h
RS Stock No. 706-3297
BrandRS PRO
$4.595
Each (In a Pack of 2)
units
100µF Electrolytic 450V dc Through Hole 22 (Dia.) x 40mm 40mm 40mm - 22mm -25°C +105°C - 10mm 2000h
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