Aluminum Electrolytic Capacitors

Part Number	Description / PDF	Quantity
EEU-FC0J222 Panasonic	CAP ALUM 2200UF 20% 6.3V RADIAL	454
ECA-2VM2R2BJ Panasonic	CAP ALUM 2.2UF 20% 350V RADIAL	0
ECA-1JHG100 Panasonic	CAP ALUM 10UF 20% 63V RADIAL	0
EEE-FT1V681UL Panasonic	CAP ALUM 680UF 35V 20% SMD	0
EEU-EE2D331 Panasonic	CAP ALUM 330UF 20% 200V RADIAL	0
EEU-EE2W220S Panasonic	CAP ALUM 22UF 20% 450V RADIAL	15945
EEU-FC1C562 Panasonic	CAP ALUM 5600UF 20% 16V RADIAL	116
ECA-1HHG101BJ Panasonic	CAP ALUM 100UF 20% 50V RADIAL	0
EEE-FC0J152P Panasonic	CAP ALUM 1500UF 20% 6.3V SMD	3719
EEU-FC1C222B Panasonic	CAP ALUM 2200UF 20% 16V RADIAL	0
EEU-EE2C820 Panasonic	CAP ALUM 82UF 20% 160V RADIAL	0
EEU-FR1J121B Panasonic	CAP ALUM 120UF 20% 63V RADIAL	33
EEU-FC1H121 Panasonic	CAP ALUM 120UF 20% 50V RADIAL	50
EEE-HA1E330AP Panasonic	CAP ALUM 33UF 20% 25V SMD	1903
ECE-A1CN220UB Panasonic	CAP ALUM 22UF 20% 16V RADIAL	662
EEU-FR1V222B Panasonic	CAP ALUM 2200UF 20% 35V RADIAL	0
EEU-FK1V561B Panasonic	CAP ALUM 560UF 20% 35V RADIAL TH	0
ECA-2VM470 Panasonic	CAP ALUM 47UF 20% 350V RADIAL	0
EEE-HAJ101WAR Panasonic	CAP ALUM 100UF 20% 6.3V SMD	34970
EEV-HA1J220P Panasonic	CAP ALUM 22UF 20% 63V SMD	4608

Aluminum Electrolytic Capacitors

1. Overview

Aluminum electrolytic capacitors are polarized capacitors using an aluminum oxide layer as the dielectric medium. They consist of an aluminum anode, electrolyte solution, and cathode. These capacitors offer high capacitance values (1 F-2.7F) with relatively compact size, making them essential components in power supply filtering, signal decoupling, and energy storage applications. Their evolution has enabled miniaturization in electronics while maintaining performance in harsh environments.

2. Main Types and Functional Classification

Type	Functional Characteristics	Application Examples
Radial Lead Type	Vertical mounting with dual leads	Consumer electronics power supplies
SMD Type	Surface-mount design for PCB integration	Computer motherboards
Stud Mount Type	High-current screw terminal design	Industrial inverters
Bi-polar Type	Able to withstand reverse voltage	Motor drive circuits

3. Structure and Composition

Typical construction includes: - Anode Foil: High-purity aluminum with etched surface (100-600m /m effective area) - Dielectric Layer: 0.1-0.8 m thick aluminum oxide (Al O ) - Electrolyte: Ammonium borate solution in organic solvent - Cathode Foil: 50-100 m aluminum sheet - Separator Paper: 50 m thick kraft paper soaked in electrolyte - Aluminum Case: 0.5-2.0mm thick stamped enclosure

4. Key Technical Specifications

Parameter	Description	Importance
Capacitance (C)	1 F-2.7F (120Hz measurement)	Determines filtering effectiveness
Rated Voltage (UR)	6.3V-630V DC working range	Failure risk above limit
ESR	5m -1.5 at 100kHz	Affects switching performance
Ripple Current	100mA-5A RMS	Lifetime predictor
Leakage Current	0.01C UR A maximum	Power efficiency factor
Operating Temp	-55 C to +150 C range	Reliability indicator

5. Application Fields

Power Electronics: Switching power supplies, UPS systems
Consumer Devices: TVs, gaming consoles, LED lighting
Industrial: Variable frequency drives, welding machines
Automotive: On-board chargers, ADAS systems
Renewables: Solar inverters, wind turbine converters

6. Leading Manufacturers

Manufacturer	Headquarters	Representative Product
Nichicon	Japan	UPW Series (105 C, 2000h)
Rubycon	Japan	ZL Series (Low ESR 4m )
United Chemi-Con	USA	KXJ Series (630V rating)
Samxon	Taiwan	EEU-FR Series (Conductive polymer hybrid)

7. Selection Guidelines

Consider these factors: - Required capacitance tolerance ( 20% standard) - Voltage derating (select 1.25 operating voltage) - Temperature range (automotive requires -40 C to +150 C) - Vibration resistance (screw-terminal better than SMD) - Lifetime calculation: Lx = L0 (T0/ T) (UR/UX) - RoHS compliance for environmental regulations

Industry Trends

Current developments include: - Conductive polymer hybrid capacitors (30% ESR reduction) - Nanoscale dielectric engineering (<0.1 m oxide layers) - AI-driven lifetime prediction models - Bio-compatible electrolyte formulations - 4D printing of anode structures - Integration with PCB substrates

Application Case

In a 3kW server power supply, 4x 450V/470 F capacitors in parallel provide 2220 F total capacitance with 14Arms ripple current handling. The design uses Nichicon U3 series devices with 6.5mm lead spacing, operating at 120 C with 95% voltage derating, achieving 8000-hour MTBF.