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Aluminum Electrolytic Capacitors

Find the right aluminum electrolytic capacitor for your power design. Our catalog covers surface-mount (SMD) and radial-lead capacitors for board-level designs, as well as snap-in and screw-terminal capacitors for high-power equipment. Contact our team for help sourcing standard, long-life and hard-to-find parts.

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Total Products: 14,103
ImageData
Sheet		Part NumberManufacturerDescriptionCategoryDevice PackageVoltageOperating
Temp		Additional SpecificationsQtyGet A
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LKG2A821MESZAK
LKG2A821MESZAKNichiconCAP ALUM 820UF ±20% 100V SNAP-INAluminum Electrolytic CapacitorsN/A100 V-40°C - 85°C
Applications:
Audio
Capacitance:
820 µF
ESR:
N/A
Height Seated (Max):
3.2 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
1000 h @ 85°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
N/A
Ripple Current Low Frequency:
1.85 A @ 120 Hz
Size / Dimension:
30 x 22 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,744
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LKG2A821MESZBK
LKG2A821MESZBKNichiconCAP ALUM 820UF ±20% 100V SNAP-INAluminum Electrolytic CapacitorsN/A100 V-40°C - 85°C
Applications:
Audio
Capacitance:
820 µF
ESR:
N/A
Height Seated (Max):
4.2 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
1000 h @ 85°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
N/A
Ripple Current Low Frequency:
2.4 A @ 120 Hz
Size / Dimension:
40 x 22 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,345
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LKG2A821MESZCK
LKG2A821MESZCKNichiconCAP ALUM 820UF ±20% 100V SNAP-INAluminum Electrolytic CapacitorsN/A100 V-40°C - 85°C
Applications:
Audio
Capacitance:
820 µF
ESR:
N/A
Height Seated (Max):
5.2 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
1000 h @ 85°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
N/A
Ripple Current Low Frequency:
3 A @ 120 Hz
Size / Dimension:
50 x 22 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,631
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LKS1E103MESA
LKS1E103MESANichiconCAP ALUM 10000UF ±20% 25V SNAP-INAluminum Electrolytic CapacitorsN/A25 V-40°C - 85°C
Applications:
General Purpose
Capacitance:
10 mF
ESR:
N/A
Height Seated (Max):
3.2 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
1000 h @ 85°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
N/A
Ripple Current Low Frequency:
2.45 A @ 120 Hz
Size / Dimension:
30 x 25 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,089
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LKS1E103MESB
LKS1E103MESBNichiconCAP ALUM 10000UF ±20% 25V SNAP-INAluminum Electrolytic CapacitorsN/A25 V-40°C - 85°C
Applications:
General Purpose
Capacitance:
10 mF
ESR:
N/A
Height Seated (Max):
2.7 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
1000 h @ 85°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
N/A
Ripple Current Low Frequency:
2.45 A @ 120 Hz
Size / Dimension:
25 x 30 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,997
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LKS1E103MESC
LKS1E103MESCNichiconCAP ALUM 10000UF ±20% 25V SNAP-INAluminum Electrolytic CapacitorsN/A25 V-40°C - 85°C
Applications:
General Purpose
Capacitance:
10 mF
ESR:
N/A
Height Seated (Max):
2.2 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
1000 h @ 85°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
N/A
Ripple Current Low Frequency:
2.45 A @ 120 Hz
Size / Dimension:
20 x 35 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,540
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LKS1E103MESY
LKS1E103MESYNichiconCAP ALUM 10000UF ±20% 25V SNAP-INAluminum Electrolytic CapacitorsN/A25 V-40°C - 85°C
Applications:
General Purpose
Capacitance:
10 mF
ESR:
N/A
Height Seated (Max):
4.7 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
1000 h @ 85°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
N/A
Ripple Current Low Frequency:
2.45 A @ 120 Hz
Size / Dimension:
45 x 20 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,972
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LKS1E103MESZ
LKS1E103MESZNichiconCAP ALUM 10000UF ±20% 25V SNAP-INAluminum Electrolytic CapacitorsN/A25 V-40°C - 85°C
Applications:
General Purpose
Capacitance:
10 mF
ESR:
N/A
Height Seated (Max):
4.2 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
1000 h @ 85°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
N/A
Ripple Current Low Frequency:
2.45 A @ 120 Hz
Size / Dimension:
40 x 22 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,219
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LKS1E123MESA
LKS1E123MESANichiconCAP ALUM 12000UF ±20% 25V SNAP-INAluminum Electrolytic CapacitorsN/A25 V-40°C - 85°C
Applications:
General Purpose
Capacitance:
12 mF
ESR:
N/A
Height Seated (Max):
3.7 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
1000 h @ 85°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
N/A
Ripple Current Low Frequency:
2.65 A @ 120 Hz
Size / Dimension:
35 x 25 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,040
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LKS1E123MESB
LKS1E123MESBNichiconCAP ALUM 12000UF ±20% 25V SNAP-INAluminum Electrolytic CapacitorsN/A25 V-40°C - 85°C
Applications:
General Purpose
Capacitance:
12 mF
ESR:
N/A
Height Seated (Max):
3.2 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
1000 h @ 85°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
N/A
Ripple Current Low Frequency:
2.65 A @ 120 Hz
Size / Dimension:
30 x 30 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,839
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LKS1E123MESC
LKS1E123MESCNichiconCAP ALUM 12000UF ±20% 25V SNAP-INAluminum Electrolytic CapacitorsN/A25 V-40°C - 85°C
Applications:
General Purpose
Capacitance:
12 mF
ESR:
N/A
Height Seated (Max):
2.7 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
1000 h @ 85°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
N/A
Ripple Current Low Frequency:
2.65 A @ 120 Hz
Size / Dimension:
25 x 35 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,664
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LKS1E123MESY
LKS1E123MESYNichiconCAP ALUM 12000UF ±20% 25V SNAP-INAluminum Electrolytic CapacitorsN/A25 V-40°C - 85°C
Applications:
General Purpose
Capacitance:
12 mF
ESR:
N/A
Height Seated (Max):
5.2 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
1000 h @ 85°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
N/A
Ripple Current Low Frequency:
2.65 A @ 120 Hz
Size / Dimension:
50 x 20 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,442
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LKS1E123MESZ
LKS1E123MESZNichiconCAP ALUM 12000UF ±20% 25V SNAP-INAluminum Electrolytic CapacitorsN/A25 V-40°C - 85°C
Applications:
General Purpose
Capacitance:
12 mF
ESR:
N/A
Height Seated (Max):
4.7 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
1000 h @ 85°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
N/A
Ripple Current Low Frequency:
2.65 A @ 120 Hz
Size / Dimension:
45 x 22 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,915
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LKS1E153MESA
LKS1E153MESANichiconCAP ALUM 15000UF ±20% 25V SNAP-INAluminum Electrolytic CapacitorsN/A25 V-40°C - 85°C
Applications:
General Purpose
Capacitance:
15 mF
ESR:
N/A
Height Seated (Max):
4.2 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
1000 h @ 85°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
N/A
Ripple Current Low Frequency:
3 A @ 120 Hz
Size / Dimension:
40 x 25 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
952
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LKS1E153MESZ
LKS1E153MESZNichiconCAP ALUM 15000UF ±20% 25V SNAP-INAluminum Electrolytic CapacitorsN/A25 V-40°C - 85°C
Applications:
General Purpose
Capacitance:
15 mF
ESR:
N/A
Height Seated (Max):
5.2 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
1000 h @ 85°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
N/A
Ripple Current Low Frequency:
3 A @ 120 Hz
Size / Dimension:
50 x 22 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
531
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LKS1E183MESA
LKS1E183MESANichiconCAP ALUM 18000UF ±20% 25V SNAP-INAluminum Electrolytic CapacitorsN/A25 V-40°C - 85°C
Applications:
General Purpose
Capacitance:
18 mF
ESR:
N/A
Height Seated (Max):
5.2 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
1000 h @ 85°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
N/A
Ripple Current Low Frequency:
3.35 A @ 120 Hz
Size / Dimension:
50 x 25 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,511
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LKS1E183MESB
LKS1E183MESBNichiconCAP ALUM 18000UF ±20% 25V SNAP-INAluminum Electrolytic CapacitorsN/A25 V-40°C - 85°C
Applications:
General Purpose
Capacitance:
18 mF
ESR:
N/A
Height Seated (Max):
3.7 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
1000 h @ 85°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
N/A
Ripple Current Low Frequency:
3.35 A @ 120 Hz
Size / Dimension:
35 x 30 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,057
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LKS1E183MESC
LKS1E183MESCNichiconCAP ALUM 18000UF ±20% 25V SNAP-INAluminum Electrolytic CapacitorsN/A25 V-40°C - 85°C
Applications:
General Purpose
Capacitance:
18 mF
ESR:
N/A
Height Seated (Max):
3.2 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
1000 h @ 85°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
N/A
Ripple Current Low Frequency:
3.35 A @ 120 Hz
Size / Dimension:
30 x 35 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,082
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LKS1E223MESB
LKS1E223MESBNichiconCAP ALUM 22000UF ±20% 25V SNAP-INAluminum Electrolytic CapacitorsN/A25 V-40°C - 85°C
Applications:
General Purpose
Capacitance:
22 mF
ESR:
N/A
Height Seated (Max):
4.7 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
1000 h @ 85°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
N/A
Ripple Current Low Frequency:
3.75 A @ 120 Hz
Size / Dimension:
45 x 30 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,303
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LKS1E223MESC
LKS1E223MESCNichiconCAP ALUM 22000UF ±20% 25V SNAP-INAluminum Electrolytic CapacitorsN/A25 V-40°C - 85°C
Applications:
General Purpose
Capacitance:
22 mF
ESR:
N/A
Height Seated (Max):
3.7 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
1000 h @ 85°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
N/A
Ripple Current Low Frequency:
3.75 A @ 120 Hz
Size / Dimension:
35 x 35 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,370
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About Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors offer the most capacitance for the cost of any common capacitor type, which makes them the standard choice for bulk energy storage and filtering in power circuits. An etched aluminum foil with a thin oxide layer and an electrolyte packs high capacitance into a compact can, at voltages from low-voltage logic rails to high-voltage power stages.

Because they are polarized and their electrolyte ages with heat, the ratings that matter most are capacitance, voltage, ripple current, temperature and rated lifetime. Series differ mainly in how they balance these: long-life series for equipment that runs hot around the clock, low-ESR series for switching power supplies, and automotive-grade and audio-grade series for their specialized requirements. Suntsu sources these capacitors alongside our timing devices and integrated circuits for automotive, industrial and power applications.

Common Applications of Aluminum Electrolytic Capacitors

  • Power supply filtering: smoothing rectified DC and holding up output rails in AC-DC and DC-DC converters
  • DC link and bulk storage: snap-in and screw-terminal capacitors in inverters, motor drives, UPS and solar systems
  • Automotive electronics: automotive-grade series for engine control units, lighting and infotainment
  • Audio equipment: audio-grade capacitors for amplifier power supplies and signal coupling
  • Industrial and lighting: LED drivers, welding equipment and industrial controls that need high capacitance at high voltage

How to Choose the Right Aluminum Electrolytic Capacitor

Selecting the right aluminum electrolytic capacitor comes down to four key specifications:

Capacitance and Voltage: Match the µF value to your filtering or hold-up needs, and choose a rated voltage with headroom above your circuit’s maximum voltage, including ripple peaks.

Ripple Current and ESR: Make sure the rated ripple current covers the AC current the capacitor will carry. Low-ESR series run cooler in switching power supplies.

Temperature and Lifetime: Lifetime roughly doubles for every 10°C below the rated temperature, so pick a temperature rating and hour rating that suit how hot and how long your product will run.

Mounting Type and Size: Choose SMD or radial lead for board-level designs, snap-in for higher-power boards and screw terminal for chassis-mounted power equipment. Confirm the diameter and height fit your layout.

Check each product’s datasheet to confirm these specs align with your design before ordering.

We’ve Got You Covered!

If you can’t find the parts you’re looking for in our database, don’t worry! We’re here to help. Simply fill out the form below with the part number you need and your contact information, and we’ll locate it for you. If you prefer to speak to someone directly, our sales team is available at 949.783.7300.

























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