Aluminum Electrolytic Capacitors

Part Number	Description / PDF	Quantity
LLS1C473MELC Nichicon	CAP ALUM 47000UF 20% 16V SNAP	0
UFW0J102MPD1TD Nichicon	CAP ALUM 1000UF 20% 6.3V RADIAL	3489
EEE-HC0J470R Panasonic	CAP ALUM 47UF 20% 6.3V SMD	0
UBW1V331MPD1TD Nichicon	CAP ALUM 330UF 20% 35V RADIAL	260
MAL215868272E3 Vishay BC Components/Beyshlag/Draloric	CAP ALUM 2700UF 20% 63V SNAP	0
CGS472U150R5L Cornell Dubilier Electronics	CAP ALUM 4700UF 150V SCREW	0
400HXG120MEFC25X25 Rubycon	CAP ALUM 120UF 20% 400V SNAP	0
10ZLS5600MEFC12.5X35 Rubycon	CAP ALUM 5600UF 20% 10V RADIAL	171
B43305A5397M80 TDK EPCOS	CAP ALUM 390UF 20% 450V SNAP	0
EMZK350ADA100ME61G United Chemi-Con	CAP ALUM 10UF 20% 35V SMD	0
UMP1V2R2MDD1TE Nichicon	CAP ALUM 2.2UF 20% 35V RADIAL	0
MAL215869152E3 Vishay BC Components/Beyshlag/Draloric	CAP ALUM 1500UF 20% 100V SNAP	0
HVMLS221M250EK0A Cornell Dubilier Electronics	CAP ALUM 220UF 20% 250V FLATPACK	0
LGN2V151MELZ30 Nichicon	CAP ALUM 150UF 20% 350V SNAP	301
515D105M450CC6AE3 Vishay / Sprague	CAP ALUM 1UF 20% 450V RADIAL	0
63ZLJ470MGA12.5X25 Rubycon	CAP ALUM 470UF 20% 63V RADIAL	0
380LX562M100A452 Cornell Dubilier Electronics	CAP ALUM 5600UF 100V 20% SNAP	50
EEU-FR1H181LB Panasonic	CAP ALUM 180UF 20% 50V RADIAL	992
UEP1A220MDD1TA Nichicon	CAP ALUM 22UF 20% 10V RADIAL	0
ALS80C303LM100 KEMET	CAP ALUM 30000UF 20% 100V SCREW	0

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.