Aluminum - Polymer Capacitors

Part Number	Description / PDF	Quantity
PLS0G271MCO8TD Nichicon	CAP ALUM POLY 270UF 20% 4V T/H	1997
HHXE160ARA271MHA0G United Chemi-Con	CAP ALUM HYBRD 270UF 20% 16V SMD	746
RNS1C101MDN1PX Nichicon	CAP ALUM POLY 100UF 20% 16V T/H	0
PCS1C820MCL9GS Nichicon	CAP ALUM POLY 82UF 20% 16V SMD	102
PCJ1C330MCL1GS Nichicon	CAP ALUM POLY 33UF 20% 16V SMD	1801
875105242004 Würth Elektronik Midcom	CAP ALUM POLY 33UF 20% 10V SMD	468
RNU1D391MDN1KX Nichicon	CAP ALUM POLY 390UF 20% 20V T/H	970
337XMPL002MG28 Cornell Dubilier Electronics	CAP ALUM POLY 330UF 20% 2V SMD	0
870055874002 Würth Elektronik Midcom	CAP ALUM POLY 22UF 20% 63V T/H	798
APXN6R3ARA561MH70G United Chemi-Con	CAP ALUM POLY 560UF 20% 6.3V SMD	1014
A765KN107M1ELAE024 KEMET	CAP ALUM POLY 100UF 20% 25V SMD	560
157AVG035MFBJ Cornell Dubilier Electronics	CAP ALUM POLY 150UF 20% 35V T/H	0
477ALG025MGBJ Cornell Dubilier Electronics	CAP ALUM POLY 470UF 20% 25V T/H	0
A765MU277M1ELAE050 KEMET	CAP ALUM POLY 270UF 20% 25V SMD	395
RHS1A331MCN1GS Nichicon	CAP ALUM POLY 330UF 20% 10V SMD	903
GYB1V470MCQ1GS Nichicon	CAP ALUM POLY 47UF 20% 35V SMD	0
RHA0J471MCN1GS Nichicon	CAP ALUM POLY 470UF 20% 6.3V SMD	194
APSG160ELL561MHB5S United Chemi-Con	CAP ALUM POLY 560UF 20% 16V T/H	0
EEH-ZA1H470P Panasonic	HYBRID SMD 50V47UF 105DEGC 10000	299
25SVPF82M Panasonic	CAP ALUM POLY 82UF 20% 25V SMD	3096

Aluminum - Polymer Capacitors

1. Overview

Aluminum polymer capacitors are a type of electrolytic capacitor utilizing conductive polymer materials as the cathode. Compared to traditional liquid electrolyte capacitors, they offer lower equivalent series resistance (ESR), longer operational lifespan, and improved stability. Their hybrid structure combining aluminum oxide dielectric and polymer electrolytes makes them critical components in modern electronics for power filtering, signal decoupling, and energy storage applications.

2. Main Types & Functional Classification

Type	Functional Features	Application Examples
SMD Aluminum Polymer Capacitors	Surface-mount design with compact size and low profile	Smartphones, laptops, VR devices
Leaded Aluminum Polymer Capacitors	Radial/axial leads with high current handling capability	Power supplies, industrial inverters
High Voltage Polymer Capacitors	Rated voltage 100V with reinforced dielectric layers	Automotive ECUs, solar inverters
Low ESR Polymer Capacitors	ESR values < 10m for high-frequency filtering	Server motherboards, GPU power modules

3. Structure & Composition

The typical construction includes:

Anode: High-purity aluminum foil with etched surface for increased area
Dielectric: Thin aluminum oxide layer (Al O ) formed through electrochemical oxidation
Cathode: Conductive polymer (e.g., PEDOT:PSS) combined with graphite/carbon layer
Electrolyte: Solid polymer matrix with high ion conductivity
Encapsulation: Aluminum casing with rubber sealing for moisture protection

4. Key Technical Specifications

Parameter	Description	Importance
Capacitance Range	Typically 10 F to 3300 F	Determines energy storage capacity
Rated Voltage	2.5V to 100V DC	Defines maximum operating voltage
ESR (Equivalent Series Resistance)	3m to 150m	Affects high-frequency filtering efficiency
Ripple Current	100mA to 5Arms	Crucial for power supply stability
Operating Temperature	-55 C to +105 C	Determines environmental durability
Lifetime	5000 to 15000 hours @ 105 C	Impacts product reliability

5. Application Fields

Consumer Electronics: Smartphones, gaming consoles, wearables
Automotive Systems: ADAS controllers, battery management systems
Industrial Equipment: CNC machines, servo drives, PLCs
Telecom Infrastructure: 5G base stations, optical network terminals
Medical Devices: MRI scanners, portable diagnostic equipment

6. Leading Manufacturers & Products

Manufacturer	Product Series	Key Features
Nichicon	UPW Series	105 C, 3000hrs, ultra-low ESR (5m )
Chemicon	SP-Cap	High ripple current: 2.5A@100kHz
Panasonic	FC-F Series	Conductive polymer hybrid technology
AVX	TACMicro	Military-grade reliability (MIL-STD-883)
Samsung Electro-Mechanics	CA Series	0805 case size with 220 F capacitance

7. Selection Guidelines

Key considerations:

Capacitance & Voltage Margin: Select 20% higher than circuit requirements
ESR Requirements: Critical for switching power supplies (e.g., VRMs require <20m )
Thermal Management: Derate ripple current at temperatures >85 C
Package Constraints: SMD preferred for mobile devices, through-hole for high-current applications
Cost Optimization: Balance polymer content vs. performance needs

Case Study: Selecting a 470 F/16V capacitor for a GPU power circuit requires ESR <15m and 105 C rating.

8. Industry Trends

Development of nanocomposite polymers for ESR reduction to sub-5m levels
Miniturization: 0603 SMD case achieving 100 F+ capacitance
High-temperature tolerance: 125 C operational capability
Biodegradable polymer electrolytes for eco-friendly manufacturing
Embedded capacitor technology for 3D IC packaging
AI-driven lifetime prediction models for reliability optimization