Aluminum Electrolytic Capacitors

Part Number	Description / PDF	Quantity
UPJ0J222MPD Nichicon	CAP ALUM 2200UF 20% 6.3V RADIAL	45
UPW1J151MPD1TD Nichicon	CAP ALUM 150UF 20% 63V RADIAL	111
URS2G220MHD6TN Nichicon	CAP ALUM 22UF 20% 400V RADIAL	414
UVR1C470MDD1TD Nichicon	CAP ALUM 47UF 20% 16V RADIAL	4000
UHE1H101MPD1TA Nichicon	CAP ALUM 100UF 20% 50V RADIAL	0
UPJ1A561MPD Nichicon	CAP ALUM 560UF 20% 10V RADIAL	0
LNT2W153MSEJ Nichicon	CAP ALUM 15000UF 20% 450V SCREW	5
UPM1H120MDD1TA Nichicon	CAP ALUM 12UF 20% 50V RADIAL	0
UUJ1J331MNQ1MS Nichicon	CAP ALUM 330UF 20% 63V SMD	0
UHD1V122MHD6TN Nichicon	CAP ALUM 1200UF 20% 35V RADIAL	0
LQSW6101MELZ25 Nichicon	CAP ALUM 100UF 20% 420V SNAP	88
UPS1H102MHD Nichicon	CAP ALUM 1000UF 20% 50V RADIAL	0
UKL2A6R8KED1TD Nichicon	CAP ALUM 6.8UF 20% 100V RADIAL	0
UWF1E150MCL1GB Nichicon	CAP ALUM 15UF 20% 25V SMD	846
UKL1V152KHD Nichicon	CAP ALUM 1500UF 10% 35V RADIAL	149
UFW1E222MHD1TO Nichicon	CAP ALUM 2200UF 20% 25V RADIAL	0
UKL1H0R1MDD1TD Nichicon	CAP ALUM 0.1UF 20% 50V RADIAL	450
UCY2E270MPD Nichicon	CAP ALUM 27UF 20% 250V RADIAL	435
UVZ1C221MED Nichicon	CAP ALUM 220UF 20% 16V RADIAL	445
LGR2D122MELB50 Nichicon	CAP ALUM 1200UF 20% 200V SNAP	34

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.