Aluminum - Polymer Capacitors

Part Number	Description / PDF	Quantity
6SEP820M+T Panasonic	CAP ALUM POLY 820UF 20% 6.3V T/H	500
A759KS335M2EAAE512 KEMET	CAP ALUM POLY 3.3UF 20% 250V T/H	2098
HHXD250ARA680MF80G United Chemi-Con	CAP ALUM HYBRID 68UF 20% 25V SMD	1524
A759KS107M1VAAE031 KEMET	CAP ALUM POLY 100UF 20% 35V T/H	2939
A767KN226M1JLAE045 KEMET	CAP ALUM POLY 22UF 20% 63V SMD	4803
875115655011 Würth Elektronik Midcom	WCAP-PSHP ALUMINUM POLYMER CAP	0
35SEK180M Panasonic	CAP ALUM POLY 180UF 20% 35V T/H	398
EEF-SD0G151R Panasonic	CAP ALUM POLY 150UF 20% 4V SMD	727
35SEF39M Panasonic	CAP ALUM POLY 39UF 20% 35V T/H	195
A750MW188M1CAAE010 KEMET	SOLID POLYMER ALUMINUM, RADIAL,	496
EEF-HX1E220R Panasonic	CAP ALUM POLY 22UF 20% 25V SMD	0
PCF1D470MCL1GS Nichicon	CAP ALUM POLY 47UF 20% 20V SMD	453
PCX1C101MCS1GS Nichicon	CAP ALUM POLY 100UF 20% 16V SMD	160
127XMPL6R3MG19X Cornell Dubilier Electronics	CAP ALUM POLY 120UF 20% 6.3V SMD	0
827UER2R5MFF Cornell Dubilier Electronics	CAP ALUM POLY 820UF 20% 2.5V T/H	0
APXC2R5ARA181ME60G United Chemi-Con	CAP ALUM POLY 180UF 20% 2.5V SMD	0
870025375010 Würth Elektronik Midcom	CAP ALUM POLY 820UF 20% 16V T/H	93
B40900B5477M000 TDK EPCOS	CAP ALUM 470UF 20% 25V SMD	201
2R5SVP680M Panasonic	CAP ALUM POLY 680UF 20% 2.5V SMD	380
A759KS156M2AAAE052 KEMET	CAP ALUM POLY 15UF 20% 100V T/H	495

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