Aluminum Electrolytic Capacitors

Part Number	Description / PDF	Quantity
EEE-FT1C151AV Panasonic	CAP ALUM 150UF 20% 16V SMD	855
EEA-GA1H4R7B Panasonic	CAP ALUM 4.7UF 20% 50V RADIAL	6914
EEU-FM0J821LB Panasonic	CAP ALUM 820UF 20% 6.3V RADIAL	0
ECA-2EM3R3BJ Panasonic	CAP ALUM 3.3UF 20% 250V RADIAL	0
EEE-TG1E221P Panasonic	CAP ALUM 220UF 20% 25V SMD	0
EEU-EB1J331B Panasonic	CAP ALUM 330UF 20% 63V RADIAL	500
EEE-2AA330P Panasonic	CAP ALUM 33UF 20% 100V SMD	19088
EEA-GA1V470H Panasonic	CAP ALUM 47UF 20% 35V RADIAL	0
EEU-EB2D470 Panasonic	CAP ALUM 47UF 20% 200V RADIAL	303
EEU-TP1E202SB Panasonic	CAP ALUM 2000UF 20% 25V RADIAL	0
EEU-FC0J103 Panasonic	CAP ALUM 10000UF 20% 6.3V RADIAL	73
EEU-HD1E331B Panasonic	CAP ALUM 330UF 20% 25V RADIAL	757
ECA-1JM470I Panasonic	CAP ALUM 47UF 20% 63V RADIAL	1463
EEU-FS1E122 Panasonic	CAP ALUM 1200UF 20% 25V T/H	0
EEE-FK1H221GL Panasonic	CAP ALUM 220UF 50V 20% SMD	475
EEU-HD1V332 Panasonic	CAP ALUM 3300UF 20% 35V RADIAL	0
EEU-FM1V680B Panasonic	CAP ALUM 68UF 20% 35V RADIAL	0
EEU-FR1H560 Panasonic	CAP ALUM 56UF 20% 50V RADIAL	0
EEE-FNH820XUV Panasonic	CAP ALUM 82UF 50VDC 20% SMD	890
EEU-FK0J332 Panasonic	CAP ALUM 3300UF 20% 6.3V RAD TH	1938

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.