Aluminum Electrolytic Capacitors

Part Number	Description / PDF	Quantity
AHA476M63G24T-F Cornell Dubilier Electronics	CAP ALUM 47UF 20% 63V SMD	0
107TMA050M Cornell Dubilier Electronics	CAP ALUM 100UF 20% 50V AXIAL	0
CGH292T250V3L Cornell Dubilier Electronics	CAP ALUM 2900UF 250V SCREW	0
227CKE200M Cornell Dubilier Electronics	CAP ALUM 220UF 20% 200V RADIAL	0
MLP962M020EK1A Cornell Dubilier Electronics	CAP ALUM 9600UF 20% 20V FLATPACK	0
CGS193U075R5L Cornell Dubilier Electronics	CAP ALUM 19000UF 75V SCREW	0
MLP113M050EB0A Cornell Dubilier Electronics	CAP ALUM 11000UF 20% 50V FLATPCK	195
SLPX152M180H5P3 Cornell Dubilier Electronics	CAP ALUM 1500UF 20% 180V SNAP	0
AVS227M10X16T-F Cornell Dubilier Electronics	CAP ALUM 220UF 20% 10V SMD	0
381LX472M063J052 Cornell Dubilier Electronics	CAP ALUM 4700UF 63V 20% SNAP	74
380LQ682M050J022 Cornell Dubilier Electronics	CAP ALUM 6800UF 20% 50V SNAP	0
MLSG442M040EK1C Cornell Dubilier Electronics	CAP ALUM 4400UF 20% 40V FLATPACK	25
SLP123M025C7P3 Cornell Dubilier Electronics	CAP ALUM 12000UF 20% 25V SNAP	0
CG152U075R3C Cornell Dubilier Electronics	CAP ALUM 1500UF 75V SCREW	0
AVS107M10D16T-F Cornell Dubilier Electronics	CAP ALUM 100UF 20% 10V SMD	0
105CKE100M Cornell Dubilier Electronics	CAP ALUM 1UF 20% 100V RADIAL	0
337LMX450M2DH Cornell Dubilier Electronics	CAP ALUM 330UF 20% 450V SNAP	0
109RZM016M Cornell Dubilier Electronics	CAP ALUM 10000UF 20% 16V T/H	44
SLP682M063H7P3 Cornell Dubilier Electronics	CAP ALUM 6800UF 20% 63V SNAP	1031
THAS201M300AD0C Cornell Dubilier Electronics	CAP ALUM 200UF 20% 300V T/H	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.