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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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LKX2G101MESY35
LKX2G101MESY35NichiconCAP ALUM 100UF ±20% 400V SNAP-INAluminum Electrolytic CapacitorsN/A400 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
100 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:
972.4 mA @ 50 kHz
Ripple Current Low Frequency:
680 mA @ 120 Hz
Size / Dimension:
35 x 20 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
521
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LKX2G121MESA25
LKX2G121MESA25NichiconCAP ALUM 120UF ±20% 400V SNAP-INAluminum Electrolytic CapacitorsN/A400 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:
1.044 A @ 50 kHz
Ripple Current Low Frequency:
730 mA @ 120 Hz
Size / Dimension:
25 x 25 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
629
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LKX2G121MESY35
LKX2G121MESY35NichiconCAP ALUM 120UF ±20% 400V SNAP-INAluminum Electrolytic CapacitorsN/A400 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:
1.044 A @ 50 kHz
Ripple Current Low Frequency:
730 mA @ 120 Hz
Size / Dimension:
35 x 20 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
962
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LKX2G121MESZ30
LKX2G121MESZ30NichiconCAP ALUM 120UF ±20% 400V SNAP-INAluminum Electrolytic CapacitorsN/A400 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:
1.044 A @ 100 kHz
Ripple Current Low Frequency:
730 mA @ 120 Hz
Size / Dimension:
30 x 22 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,281
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LKX2G151MESA30
LKX2G151MESA30NichiconCAP ALUM 150UF ±20% 400V SNAP-INAluminum Electrolytic CapacitorsN/A400 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:
1.216 A @ 50 kHz
Ripple Current Low Frequency:
850 mA @ 120 Hz
Size / Dimension:
30 x 25 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,867
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LKX2G151MESY45
LKX2G151MESY45NichiconCAP ALUM 150UF ±20% 400V SNAP-INAluminum Electrolytic CapacitorsN/A400 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
150 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:
1.216 A @ 50 kHz
Ripple Current Low Frequency:
850 mA @ 120 Hz
Size / Dimension:
45 x 20 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,927
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LKX2G151MESZ35
LKX2G151MESZ35NichiconCAP ALUM 150UF ±20% 400V SNAP-INAluminum Electrolytic CapacitorsN/A400 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
150 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:
1.216 A @ 50 kHz
Ripple Current Low Frequency:
850 mA @ 120 Hz
Size / Dimension:
35 x 22 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,468
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LKX2G181MESA35
LKX2G181MESA35NichiconCAP ALUM 180UF ±20% 400V SNAP-INAluminum Electrolytic CapacitorsN/A400 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:
1.359 A @ 50 kHz
Ripple Current Low Frequency:
950 mA @ 120 Hz
Size / Dimension:
35 x 25 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,971
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LKX2G181MESY50
LKX2G181MESY50NichiconCAP ALUM 180UF ±20% 400V SNAP-INAluminum Electrolytic CapacitorsN/A400 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
180 µF
ESR:
N/A
Height Seated (Max):
5.2 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
2000 h @ 105°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
1.359 A @ 50 kHz
Ripple Current Low Frequency:
950 mA @ 120 Hz
Size / Dimension:
50 x 20 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
650
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LKX2G181MESZ40
LKX2G181MESZ40NichiconCAP ALUM 180UF ±20% 400V SNAP-INAluminum Electrolytic CapacitorsN/A400 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
180 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:
1.359 A @ 50 kHz
Ripple Current Low Frequency:
950 mA @ 120 Hz
Size / Dimension:
40 x 22 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
559
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LKX2G221MESA40
LKX2G221MESA40NichiconCAP ALUM 220UF ±20% 400V SNAP-INAluminum Electrolytic CapacitorsN/A400 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
220 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:
1.573 A @ 50 kHz
Ripple Current Low Frequency:
1.1 A @ 120 Hz
Size / Dimension:
40 x 25 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
710
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LKX2G221MESB30
LKX2G221MESB30NichiconCAP ALUM 220UF ±20% 400V SNAP-INAluminum Electrolytic CapacitorsN/A400 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
220 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:
1.573 A @ 50 kHz
Ripple Current Low Frequency:
1.1 A @ 120 Hz
Size / Dimension:
30 x 30 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
617
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LKX2G221MESC25
LKX2G221MESC25NichiconCAP ALUM 220UF ±20% 400V SNAP-INAluminum Electrolytic CapacitorsN/A400 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
220 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:
1.573 A @ 50 kHz
Ripple Current Low Frequency:
1.1 A @ 120 Hz
Size / Dimension:
25 x 35 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
633
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LKX2G221MESZ50
LKX2G221MESZ50NichiconCAP ALUM 220UF ±20% 400V SNAP-INAluminum Electrolytic CapacitorsN/A400 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
220 µF
ESR:
N/A
Height Seated (Max):
5.2 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
2000 h @ 105°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
1.573 A @ 50 kHz
Ripple Current Low Frequency:
1.1 A @ 120 Hz
Size / Dimension:
50 x 22 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
983
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LKX2G271MESA45
LKX2G271MESA45NichiconCAP ALUM 270UF ±20% 400V SNAP-INAluminum Electrolytic CapacitorsN/A400 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
270 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:
1.745 A @ 50 kHz
Ripple Current Low Frequency:
1.22 A @ 120 Hz
Size / Dimension:
45 x 25 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,655
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LKX2G271MESB35
LKX2G271MESB35NichiconCAP ALUM 270UF ±20% 400V SNAP-INAluminum Electrolytic CapacitorsN/A400 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
270 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:
1.745 A @ 100 kHz
Ripple Current Low Frequency:
1.22 A @ 120 Hz
Size / Dimension:
35 x 30 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
935
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LKX2G331MESA50
LKX2G331MESA50NichiconCAP ALUM 330UF ±20% 400V SNAP-INAluminum Electrolytic CapacitorsN/A400 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
330 µF
ESR:
N/A
Height Seated (Max):
5.2 cm
Impedance:
N/A
Lead Spacing:
N/A
Lifetime @ Temp:
2000 h @ 105°C
Polarization:
Polar
Ratings:
N/A
Ripple Current High Frequency:
2.059 A @ 50 kHz
Ripple Current Low Frequency:
1.44 A @ 120 Hz
Size / Dimension:
50 x 25 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
980
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LKX2G331MESB40
LKX2G331MESB40NichiconCAP ALUM 330UF ±20% 400V SNAP-INAluminum Electrolytic CapacitorsN/A400 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
330 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:
2.059 A @ 50 kHz
Ripple Current Low Frequency:
1.44 A @ 120 Hz
Size / Dimension:
40 x 30 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,379
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LKX2G331MESC30
LKX2G331MESC30NichiconCAP ALUM 330UF ±20% 400V SNAP-INAluminum Electrolytic CapacitorsN/A400 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
330 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:
2.059 A @ 50 kHz
Ripple Current Low Frequency:
1.44 A @ 120 Hz
Size / Dimension:
30 x 35 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,780
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LKX2G391MESB45
LKX2G391MESB45NichiconCAP ALUM 390UF ±20% 400V SNAP-INAluminum Electrolytic CapacitorsN/A400 V-25°C - 105°C
Applications:
General Purpose
Capacitance:
390 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:
2.216 A @ 50 kHz
Ripple Current Low Frequency:
1.55 A @ 120 Hz
Size / Dimension:
45 x 30 mm
Surface Mount Land Size:
N/A
Tolerance:
-20%~20%
1,181
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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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