Aluminum Electrolytic Capacitors

Part Number	Description / PDF	Quantity
EEE-FN1V471UP Panasonic	CAP ALUM 470UF 35VDC 20% SMD	0
EEU-FS2A470B Panasonic	CAP ALUM 47UF 20% 100V THRU HOLE	846
EEE-FK1C182SQ Panasonic	CAP ALUM 1800UF 20% 16V SMD	39
EEU-FC1E562 Panasonic	CAP ALUM 5600UF 20% 25V RADIAL	76
EEE-1CA221XP Panasonic	CAP ALUM 220UF 20% 16V SMD	0
EEU-FR1V271 Panasonic	CAP ALUM 270UF 20% 35V RADIAL	0
EEU-FS1C511B Panasonic	CAP ALUM 510UF 20% 16V THRU HOLE	4039
EEU-FC0J123L Panasonic	CAP ALUM 12000UF 20% 6.3V RADIAL	1095
ECE-A1AN470U Panasonic	CAP ALUM 47UF 20% 10V RADIAL	4824
EEV-FK1K101Q Panasonic	CAP ALUM 100UF 20% 80V SMD	5
EEE-FK0J331AL Panasonic	CAP ALUM 330UF 6.3V 20% SMD	1985
ECO-S1HA562EA Panasonic	CAP ALUM 5600UF 20% 50V SNAP	67
EEE-FK1A331AV Panasonic	CAP ALUM 330UF 20% 10V SMD	500
EEE-FN1A680R Panasonic	CAP ALUM 68UF 10VDC 20% SMD	2000
EEU-FM1H271B Panasonic	CAP ALUM 270UF 20% 50V RADIAL	0
EEU-EB1E331 Panasonic	CAP ALUM 330UF 20% 25V RADIAL	0
ECE-A1AN331UB Panasonic	CAP ALUM 330UF 20% 10V RADIAL	0
EEE-1JA220P Panasonic	CAP ALUM 22UF 20% 63V SMD	1845
EEA-GA1E220 Panasonic	CAP ALUM 22UF 20% 25V RADIAL	0
EEE-HBE330UAR Panasonic	CAP ALUM 33UF 20% 25V SMD	3293

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.