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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
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Sheet		Part NumberManufacturerDescriptionCategoryDevice PackageVoltageOperating
Temp		Additional SpecificationsQtyGet A
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LAKW6121MELA35
LAKW6121MELA35NichiconCAP ALUM 120UF ±20% 420V SNAP-INAluminum Electrolytic CapacitorsN/A420 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
120 µF
ESR:
N/A
Height Seated (Max):
3.7 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
2000 h @ 105°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
862.5 mA @ 10 kHz
Ripple Current Low Frequency:
750 mA @ 120 Hz
Size / Dimension:
35 x 25 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,455
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LAKW6121MELA35ZB
LAKW6121MELA35ZBNichiconCAP ALUM 120UF ±20% 420V SNAP-INAluminum Electrolytic CapacitorsN/A420 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
120 µF
ESR:
N/A
Height Seated (Max):
3.7 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
2000 h @ 105°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
862.5 mA @ 10 kHz
Ripple Current Low Frequency:
750 mA @ 120 Hz
Size / Dimension:
35 x 25 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
615
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LAKW6121MELB30
LAKW6121MELB30NichiconCAP ALUM 120UF ±20% 420V SNAP-INAluminum Electrolytic CapacitorsN/A420 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
120 µF
ESR:
N/A
Height Seated (Max):
3.2 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
2000 h @ 105°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
862.5 mA @ 10 kHz
Ripple Current Low Frequency:
750 mA @ 120 Hz
Size / Dimension:
30 x 30 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,215
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LAKW6121MELB30ZB
LAKW6121MELB30ZBNichiconCAP ALUM 120UF ±20% 420V SNAP-INAluminum Electrolytic CapacitorsN/A420 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
120 µF
ESR:
N/A
Height Seated (Max):
3.2 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
2000 h @ 105°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
862.5 mA @ 10 kHz
Ripple Current Low Frequency:
750 mA @ 120 Hz
Size / Dimension:
30 x 30 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,814
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LAKW6121MELC25
LAKW6121MELC25NichiconCAP ALUM 120UF ±20% 420V SNAP-INAluminum Electrolytic CapacitorsN/A420 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
120 µF
ESR:
N/A
Height Seated (Max):
2.7 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
2000 h @ 105°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
862.5 mA @ 10 kHz
Ripple Current Low Frequency:
750 mA @ 120 Hz
Size / Dimension:
25 x 35 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,460
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LAKW6121MELC25ZB
LAKW6121MELC25ZBNichiconCAP ALUM 120UF ±20% 420V SNAP-INAluminum Electrolytic CapacitorsN/A420 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
120 µF
ESR:
N/A
Height Seated (Max):
2.7 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
2000 h @ 105°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
862.5 mA @ 10 kHz
Ripple Current Low Frequency:
750 mA @ 120 Hz
Size / Dimension:
25 x 35 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
720
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LAKW6121MELZ45
LAKW6121MELZ45NichiconCAP ALUM 120UF ±20% 420V SNAP-INAluminum Electrolytic CapacitorsN/A420 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
120 µF
ESR:
N/A
Height Seated (Max):
4.7 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
2000 h @ 105°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
862.5 mA @ 10 kHz
Ripple Current Low Frequency:
750 mA @ 120 Hz
Size / Dimension:
45 x 22 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
821
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LAKW6121MELZ45ZB
LAKW6121MELZ45ZBNichiconCAP ALUM 120UF ±20% 420V SNAP-INAluminum Electrolytic CapacitorsN/A420 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
120 µF
ESR:
N/A
Height Seated (Max):
4.7 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
2000 h @ 105°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
862.5 mA @ 10 kHz
Ripple Current Low Frequency:
750 mA @ 120 Hz
Size / Dimension:
45 x 22 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,657
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LAKW6151MELA40
LAKW6151MELA40NichiconCAP ALUM 150UF ±20% 420V SNAP-INAluminum Electrolytic CapacitorsN/A420 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
150 µF
ESR:
N/A
Height Seated (Max):
4.2 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
2000 h @ 105°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
943 mA @ 10 kHz
Ripple Current Low Frequency:
820 mA @ 120 Hz
Size / Dimension:
40 x 25 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,932
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LAKW6151MELA40ZB
LAKW6151MELA40ZBNichiconCAP ALUM 150UF ±20% 420V SNAP-INAluminum Electrolytic CapacitorsN/A420 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
150 µF
ESR:
N/A
Height Seated (Max):
4.2 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
2000 h @ 105°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
943 mA @ 10 kHz
Ripple Current Low Frequency:
820 mA @ 120 Hz
Size / Dimension:
40 x 25 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
622
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LAKW6151MELB30
LAKW6151MELB30NichiconCAP ALUM 150UF ±20% 420V SNAP-INAluminum Electrolytic CapacitorsN/A420 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
150 µF
ESR:
N/A
Height Seated (Max):
3.2 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
2000 h @ 105°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
943 mA @ 100 kHz
Ripple Current Low Frequency:
820 mA @ 120 Hz
Size / Dimension:
30 x 30 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,336
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LAKW6151MELB30ZB
LAKW6151MELB30ZBNichiconCAP ALUM 150UF ±20% 420V SNAP-INAluminum Electrolytic CapacitorsN/A420 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
150 µF
ESR:
N/A
Height Seated (Max):
3.2 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
2000 h @ 105°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
943 mA @ 10 kHz
Ripple Current Low Frequency:
820 mA @ 120 Hz
Size / Dimension:
30 x 30 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,278
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LAKW6151MELC25
LAKW6151MELC25NichiconCAP ALUM 150UF ±20% 420V SNAP-INAluminum Electrolytic CapacitorsN/A420 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
150 µF
ESR:
N/A
Height Seated (Max):
2.7 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
2000 h @ 105°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
943 mA @ 10 kHz
Ripple Current Low Frequency:
820 mA @ 120 Hz
Size / Dimension:
25 x 35 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,167
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LAKW6151MELC25ZB
LAKW6151MELC25ZBNichiconCAP ALUM 150UF ±20% 420V SNAP-INAluminum Electrolytic CapacitorsN/A420 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
150 µF
ESR:
N/A
Height Seated (Max):
2.7 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
2000 h @ 105°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
943 mA @ 10 kHz
Ripple Current Low Frequency:
820 mA @ 120 Hz
Size / Dimension:
25 x 35 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,764
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LAKW6181MELA45
LAKW6181MELA45NichiconCAP ALUM 180UF ±20% 420V SNAP-INAluminum Electrolytic CapacitorsN/A420 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
180 µF
ESR:
N/A
Height Seated (Max):
4.7 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
2000 h @ 105°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
1.035 A @ 10 kHz
Ripple Current Low Frequency:
900 mA @ 120 Hz
Size / Dimension:
45 x 25 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,249
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LAKW6181MELA45ZB
LAKW6181MELA45ZBNichiconCAP ALUM 180UF ±20% 420V SNAP-INAluminum Electrolytic CapacitorsN/A420 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
180 µF
ESR:
N/A
Height Seated (Max):
4.7 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
2000 h @ 105°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
1.035 A @ 10 kHz
Ripple Current Low Frequency:
900 mA @ 120 Hz
Size / Dimension:
45 x 25 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,237
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LAKW6181MELB35
LAKW6181MELB35NichiconCAP ALUM 180UF ±20% 420V SNAP-INAluminum Electrolytic CapacitorsN/A420 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
180 µF
ESR:
N/A
Height Seated (Max):
3.7 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
2000 h @ 105°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
1.035 A @ 10 kHz
Ripple Current Low Frequency:
900 mA @ 120 Hz
Size / Dimension:
35 x 30 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,018
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LAKW6181MELB35ZB
LAKW6181MELB35ZBNichiconCAP ALUM 180UF ±20% 420V SNAP-INAluminum Electrolytic CapacitorsN/A420 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
180 µF
ESR:
N/A
Height Seated (Max):
3.7 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
2000 h @ 105°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
1.035 A @ 10 kHz
Ripple Current Low Frequency:
900 mA @ 120 Hz
Size / Dimension:
35 x 30 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
950
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LAKW6181MELC30
LAKW6181MELC30NichiconCAP ALUM 180UF ±20% 420V SNAP-INAluminum Electrolytic CapacitorsN/A420 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
180 µF
ESR:
N/A
Height Seated (Max):
3.2 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
2000 h @ 105°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
1.035 A @ 10 kHz
Ripple Current Low Frequency:
900 mA @ 120 Hz
Size / Dimension:
30 x 35 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,530
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QUOTE
LAKW6181MELC30ZB
LAKW6181MELC30ZBNichiconCAP ALUM 180UF ±20% 420V SNAP-INAluminum Electrolytic CapacitorsN/A420 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
180 µF
ESR:
N/A
Height Seated (Max):
3.2 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
2000 h @ 105°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
1.035 A @ 10 kHz
Ripple Current Low Frequency:
900 mA @ 120 Hz
Size / Dimension:
30 x 35 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
558
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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.

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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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