Find the right aluminum polymer capacitor for your power design. Our catalog covers surface-mount (SMD) and radial-lead polymer capacitors for applications that need low ESR, high ripple current and stable performance across temperature. Contact our team for help sourcing standard and hard-to-find parts.
Aluminum Polymer Capacitors
Total Products: 2,344
| Image | Data Sheet | Part Number | Manufacturer | Description | Category | Device Package | Voltage | Operating Temp | Additional Specifications | Qty | Get A Quote |
|---|---|---|---|---|---|---|---|---|---|---|---|
 | RL81C181MCN1 | Nichicon | CAP ALUM POLY 180UF ±20% 16V RADIAL | Aluminum - Polymer Capacitors | N/A | 16 V | -55°C - 105°C | Applications: General Purpose Capacitance: 180 µF ESR: 12 mOhm @ 100 kHz Height Seated (Max): 9 mm Impedance: N/A Lead Spacing: 3.5 mm Lifetime @ Temp: 2000 h @ 105°C Polarization: Polar Ratings: N/A Ripple Current High Frequency: 5 A @ 300 kHz Ripple Current Low Frequency: 500 mA @ 120 Hz Size / Dimension: 8 x 8 mm Surface Mount Land Size: N/A Tolerance: -20%~20% | 961 | ||
| RL81C181MCNASQ | Nichicon | CAP ALUM POLY 180UF ±20% 16V RADIAL | Aluminum - Polymer Capacitors | N/A | 16 V | -55°C - 105°C | Applications: General Purpose Capacitance: 180 µF ESR: 12 mOhm @ 100 kHz Height Seated (Max): 9 mm Impedance: N/A Lead Spacing: 3.5 mm Lifetime @ Temp: 5000 h @ 105°C Polarization: Polar Ratings: N/A Ripple Current High Frequency: 5 A @ 300 kHz Ripple Current Low Frequency: 500 mA @ 120 Hz Size / Dimension: 8 x 8 mm Surface Mount Land Size: N/A Tolerance: -20%~20% | 808 | ||
| RL81C181MDN1 | Nichicon | CAP ALUM POLY 180UF ±20% 16V RADIAL | Aluminum - Polymer Capacitors | N/A | 16 V | -55°C - 105°C | Applications: General Purpose Capacitance: 180 µF ESR: 12 mOhm @ 100 kHz Height Seated (Max): 9 mm Impedance: N/A Lead Spacing: 3.5 mm Lifetime @ Temp: 2000 h @ 105°C Polarization: Polar Ratings: N/A Ripple Current High Frequency: 5 A @ 300 kHz Ripple Current Low Frequency: 500 mA @ 120 Hz Size / Dimension: 8 x 8 mm Surface Mount Land Size: N/A Tolerance: -20%~20% | 1,104 | ||
| RL81C181MDNASQ | Nichicon | CAP ALUM POLY 180UF ±20% 16V RADIAL | Aluminum - Polymer Capacitors | N/A | 16 V | -55°C - 105°C | Applications: General Purpose Capacitance: 180 µF ESR: 12 mOhm @ 100 kHz Height Seated (Max): 9 mm Impedance: N/A Lead Spacing: 3.5 mm Lifetime @ Temp: 5000 h @ 105°C Polarization: Polar Ratings: N/A Ripple Current High Frequency: 5 A @ 300 kHz Ripple Current Low Frequency: 500 mA @ 120 Hz Size / Dimension: 8 x 8 mm Surface Mount Land Size: N/A Tolerance: -20%~20% | 1,552 | ||
| RL81C221MCN1 | Nichicon | CAP ALUM POLY 220UF ±20% 16V RADIAL | Aluminum - Polymer Capacitors | N/A | 16 V | -55°C - 105°C | Applications: General Purpose Capacitance: 220 µF ESR: 12 mOhm @ 100 kHz Height Seated (Max): 9 mm Impedance: N/A Lead Spacing: 3.5 mm Lifetime @ Temp: 2000 h @ 105°C Polarization: Polar Ratings: N/A Ripple Current High Frequency: 5 A @ 300 kHz Ripple Current Low Frequency: 500 mA @ 120 Hz Size / Dimension: 8 x 8 mm Surface Mount Land Size: N/A Tolerance: -20%~20% | 1,949 | ||
| RL81C221MCNASQ | Nichicon | CAP ALUM POLY 220UF ±20% 16V RADIAL | Aluminum - Polymer Capacitors | N/A | 16 V | -55°C - 105°C | Applications: General Purpose Capacitance: 220 µF ESR: 12 mOhm @ 100 kHz Height Seated (Max): 9 mm Impedance: N/A Lead Spacing: 3.5 mm Lifetime @ Temp: 5000 h @ 105°C Polarization: Polar Ratings: N/A Ripple Current High Frequency: 5 A @ 300 kHz Ripple Current Low Frequency: 500 mA @ 120 Hz Size / Dimension: 8 x 8 mm Surface Mount Land Size: N/A Tolerance: -20%~20% | 571 | ||
| RL81C221MDN1 | Nichicon | CAP ALUM POLY 220UF ±20% 16V RADIAL | Aluminum - Polymer Capacitors | N/A | 16 V | -55°C - 105°C | Applications: General Purpose Capacitance: 220 µF ESR: 12 mOhm @ 100 kHz Height Seated (Max): 9 mm Impedance: N/A Lead Spacing: 3.5 mm Lifetime @ Temp: 2000 h @ 105°C Polarization: Polar Ratings: N/A Ripple Current High Frequency: 5 A @ 300 kHz Ripple Current Low Frequency: 500 mA @ 120 Hz Size / Dimension: 8 x 8 mm Surface Mount Land Size: N/A Tolerance: -20%~20% | 1,710 | ||
| RL81C221MDNASQ | Nichicon | CAP ALUM POLY 220UF ±20% 16V RADIAL | Aluminum - Polymer Capacitors | N/A | 16 V | -55°C - 105°C | Applications: General Purpose Capacitance: 220 µF ESR: 12 mOhm @ 100 kHz Height Seated (Max): 9 mm Impedance: N/A Lead Spacing: 3.5 mm Lifetime @ Temp: 5000 h @ 105°C Polarization: Polar Ratings: N/A Ripple Current High Frequency: 5 A @ 300 kHz Ripple Current Low Frequency: 500 mA @ 120 Hz Size / Dimension: 8 x 8 mm Surface Mount Land Size: N/A Tolerance: -20%~20% | 1,711 | ||
| RL81C271MCN1 | Nichicon | CAP ALUM POLY 270UF ±20% 16V RADIAL | Aluminum - Polymer Capacitors | N/A | 16 V | -55°C - 105°C | Applications: General Purpose Capacitance: 270 µF ESR: 10 mOhm @ 100 kHz Height Seated (Max): 9 mm Impedance: N/A Lead Spacing: 3.5 mm Lifetime @ Temp: 2000 h @ 105°C Polarization: Polar Ratings: N/A Ripple Current High Frequency: 5 A @ 300 kHz Ripple Current Low Frequency: 500 mA @ 120 Hz Size / Dimension: 8 x 8 mm Surface Mount Land Size: N/A Tolerance: -20%~20% | 746 | ||
| RL81C271MCNASQ | Nichicon | CAP ALUM POLY 270UF ±20% 16V RADIAL | Aluminum - Polymer Capacitors | N/A | 16 V | -55°C - 105°C | Applications: General Purpose Capacitance: 270 µF ESR: 10 mOhm @ 100 kHz Height Seated (Max): 9 mm Impedance: N/A Lead Spacing: 3.5 mm Lifetime @ Temp: 5000 h @ 105°C Polarization: Polar Ratings: N/A Ripple Current High Frequency: 5 A @ 300 kHz Ripple Current Low Frequency: 500 mA @ 120 Hz Size / Dimension: 8 x 8 mm Surface Mount Land Size: N/A Tolerance: -20%~20% | 1,864 | ||
| RL81C271MDN1 | Nichicon | CAP ALUM POLY 270UF ±20% 16V RADIAL | Aluminum - Polymer Capacitors | N/A | 16 V | -55°C - 105°C | Applications: General Purpose Capacitance: 270 µF ESR: 10 mOhm @ 100 kHz Height Seated (Max): 9 mm Impedance: N/A Lead Spacing: 3.5 mm Lifetime @ Temp: 2000 h @ 105°C Polarization: Polar Ratings: N/A Ripple Current High Frequency: 5 A @ 300 kHz Ripple Current Low Frequency: 500 mA @ 120 Hz Size / Dimension: 8 x 8 mm Surface Mount Land Size: N/A Tolerance: -20%~20% | 2,000 | ||
| RL81C271MDNASQ | Nichicon | CAP ALUM POLY 270UF ±20% 16V RADIAL | Aluminum - Polymer Capacitors | N/A | 16 V | -55°C - 105°C | Applications: General Purpose Capacitance: 270 µF ESR: 10 mOhm @ 100 kHz Height Seated (Max): 9 mm Impedance: N/A Lead Spacing: 3.5 mm Lifetime @ Temp: 5000 h @ 105°C Polarization: Polar Ratings: N/A Ripple Current High Frequency: 5 A @ 300 kHz Ripple Current Low Frequency: 500 mA @ 120 Hz Size / Dimension: 8 x 8 mm Surface Mount Land Size: N/A Tolerance: -20%~20% | 721 | ||
| RL81C331MCN1 | Nichicon | CAP ALUM POLY 330UF ±20% 16V RADIAL | Aluminum - Polymer Capacitors | N/A | 16 V | -55°C - 105°C | Applications: General Purpose Capacitance: 330 µF ESR: 12 mOhm @ 100 kHz Height Seated (Max): 9 mm Impedance: N/A Lead Spacing: 3.5 mm Lifetime @ Temp: 2000 h @ 105°C Polarization: Polar Ratings: N/A Ripple Current High Frequency: 5 A @ 300 kHz Ripple Current Low Frequency: 500 mA @ 120 Hz Size / Dimension: 8 x 8 mm Surface Mount Land Size: N/A Tolerance: -20%~20% | 1,555 | ||
| RL81C331MCNASQ | Nichicon | CAP ALUM POLY 330UF ±20% 16V RADIAL | Aluminum - Polymer Capacitors | N/A | 16 V | -55°C - 105°C | Applications: General Purpose Capacitance: 330 µF ESR: 12 mOhm @ 100 kHz Height Seated (Max): 9 mm Impedance: N/A Lead Spacing: 3.5 mm Lifetime @ Temp: 5000 h @ 105°C Polarization: Polar Ratings: N/A Ripple Current High Frequency: 5 A @ 300 kHz Ripple Current Low Frequency: 500 mA @ 120 Hz Size / Dimension: 8 x 8 mm Surface Mount Land Size: N/A Tolerance: -20%~20% | 1,712 | ||
| RL81C331MDN1 | Nichicon | CAP ALUM POLY 330UF ±20% 16V RADIAL | Aluminum - Polymer Capacitors | N/A | 16 V | -55°C - 105°C | Applications: General Purpose Capacitance: 330 µF ESR: 12 mOhm @ 100 kHz Height Seated (Max): 9 mm Impedance: N/A Lead Spacing: 3.5 mm Lifetime @ Temp: 2000 h @ 105°C Polarization: Polar Ratings: N/A Ripple Current High Frequency: 5 A @ 300 kHz Ripple Current Low Frequency: 500 mA @ 120 Hz Size / Dimension: 8 x 8 mm Surface Mount Land Size: N/A Tolerance: -20%~20% | 697 | ||
| RL81C331MDNASQ | Nichicon | CAP ALUM POLY 330UF ±20% 16V RADIAL | Aluminum - Polymer Capacitors | N/A | 16 V | -55°C - 105°C | Applications: General Purpose Capacitance: 330 µF ESR: 12 mOhm @ 100 kHz Height Seated (Max): 9 mm Impedance: N/A Lead Spacing: 3.5 mm Lifetime @ Temp: 5000 h @ 105°C Polarization: Polar Ratings: N/A Ripple Current High Frequency: 5 A @ 300 kHz Ripple Current Low Frequency: 500 mA @ 120 Hz Size / Dimension: 8 x 8 mm Surface Mount Land Size: N/A Tolerance: -20%~20% | 1,174 | ||
| RL81C471MCN1 | Nichicon | CAP ALUM POLY 470UF ±20% 16V RADIAL | Aluminum - Polymer Capacitors | N/A | 16 V | -55°C - 105°C | Applications: General Purpose Capacitance: 470 µF ESR: 16 mOhm @ 100 kHz Height Seated (Max): 9 mm Impedance: N/A Lead Spacing: 3.5 mm Lifetime @ Temp: 2000 h @ 105°C Polarization: Polar Ratings: N/A Ripple Current High Frequency: 4 A @ 300 kHz Ripple Current Low Frequency: 400 mA @ 120 Hz Size / Dimension: 8 x 8 mm Surface Mount Land Size: N/A Tolerance: -20%~20% | 548 | ||
| RL81C471MCNASQ | Nichicon | CAP ALUM POLY 470UF ±20% 16V RADIAL | Aluminum - Polymer Capacitors | N/A | 16 V | -55°C - 105°C | Applications: General Purpose Capacitance: 470 µF ESR: 16 mOhm @ 100 kHz Height Seated (Max): 9 mm Impedance: N/A Lead Spacing: 3.5 mm Lifetime @ Temp: 5000 h @ 105°C Polarization: Polar Ratings: N/A Ripple Current High Frequency: 4 A @ 300 kHz Ripple Current Low Frequency: 400 mA @ 120 Hz Size / Dimension: 8 x 8 mm Surface Mount Land Size: N/A Tolerance: -20%~20% | 740 | ||
| RL81C471MDN1 | Nichicon | CAP ALUM POLY 470UF ±20% 16V RADIAL | Aluminum - Polymer Capacitors | N/A | 16 V | -55°C - 105°C | Applications: General Purpose Capacitance: 470 µF ESR: 16 mOhm @ 100 kHz Height Seated (Max): 9 mm Impedance: N/A Lead Spacing: 3.5 mm Lifetime @ Temp: 2000 h @ 105°C Polarization: Polar Ratings: N/A Ripple Current High Frequency: 4 A @ 300 kHz Ripple Current Low Frequency: 400 mA @ 120 Hz Size / Dimension: 8 x 8 mm Surface Mount Land Size: N/A Tolerance: -20%~20% | 1,303 | ||
| RL81C471MDNASQ | Nichicon | CAP ALUM POLY 470UF ±20% 16V RADIAL | Aluminum - Polymer Capacitors | N/A | 16 V | -55°C - 105°C | Applications: General Purpose Capacitance: 470 µF ESR: 16 mOhm @ 100 kHz Height Seated (Max): 9 mm Impedance: N/A Lead Spacing: 3.5 mm Lifetime @ Temp: 5000 h @ 105°C Polarization: Polar Ratings: N/A Ripple Current High Frequency: 4 A @ 300 kHz Ripple Current Low Frequency: 400 mA @ 120 Hz Size / Dimension: 8 x 8 mm Surface Mount Land Size: N/A Tolerance: -20%~20% | 1,857 |
About Aluminum Polymer Capacitors
Aluminum polymer capacitors replace the liquid electrolyte of a standard aluminum electrolytic capacitor with a solid conductive polymer. The result is much lower ESR, higher ripple current handling and capacitance that stays stable across temperature and frequency, in a compact package. Because the polymer does not dry out, they also offer long service life and no risk of electrolyte leakage.
Hybrid polymer capacitors combine a conductive polymer with a small amount of liquid electrolyte, adding lower leakage current and higher voltage ratings to the polymer’s low ESR. Both types are a common upgrade from standard electrolytics in switching power supplies and processor power rails. Suntsu sources these capacitors alongside our timing devices and integrated circuits for computing, telecom, automotive and industrial applications.
Common Applications of Aluminum Polymer Capacitors
- Processor power rails: decoupling and bulk capacitance for CPU, GPU and FPGA voltage regulators
- DC-DC converters: output filtering where low ESR keeps ripple voltage down
- Servers and networking: long-life capacitors for data center, telecom and networking equipment that runs around the clock
- Automotive electronics: hybrid polymer capacitors for engine control units, ADAS and infotainment
- Consumer and industrial devices: compact, low-profile capacitors for laptops, displays, LED drivers and industrial controls
How to Choose the Right Aluminum Polymer Capacitor
Selecting the right aluminum polymer 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. Polymer capacitors are sensitive to voltage surges, so follow the datasheet’s derating guidance.
ESR and Ripple Current: Lower ESR means less ripple voltage and less heat. Make sure the rated ripple current covers the AC current the capacitor will carry.
Temperature and Lifetime: Polymer capacitor lifetime increases about tenfold for every 20°C below the rated temperature, so pick a temperature rating and hour rating that suit your operating conditions.
Mounting Type and Size: Choose SMD for compact, automated assembly or radial lead for through-hole designs. Confirm the diameter and height fit your layout, especially in low-profile designs.
Check each product’s datasheet to confirm these specs align with your design before ordering.
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