Aluminum Electrolytic Capacitors

Part Number	Description / PDF	Quantity
HVMLS442M040EK0A Cornell Dubilier Electronics	CAP ALUM 4400UF 20% 40V FLATPACK	0
MLP132M150EB0A Cornell Dubilier Electronics	CAP ALUM 1300UF 20% 150V FLATPCK	0
381LX152M050J202 Cornell Dubilier Electronics	CAP ALUM 1500UF 20% 50V SNAP	0
381LR271M420J052 Cornell Dubilier Electronics	CAP ALUM 270UF 20% 420V SNAP	0
AVE227M06E16T-F Cornell Dubilier Electronics	CAP ALUM 220UF 20% 6.3V SMD	0
SK220M160ST Cornell Dubilier Electronics	CAP ALUM 22UF 20% 160V RADIAL	0
380LX271M200H012 Cornell Dubilier Electronics	CAP ALUM 270UF 20% 200V SNAP	47
AEB475M2WL32T-F Cornell Dubilier Electronics	CAP ALUM 4.7UF 20% 450V SMD	0
SLP221M200A3P3 Cornell Dubilier Electronics	CAP ALUM 220UF 20% 200V SNAP	0
108KBM010M Cornell Dubilier Electronics	CAP ALUM 1000UF 20% 10V T/H	0
380LX472M063K022 Cornell Dubilier Electronics	CAP ALUM 4700UF 20% 63V SNAP	57538400
CGS802U050V2C Cornell Dubilier Electronics	CAP ALUM 8000UF 50V SCREW	0
CGS772U150X5C Cornell Dubilier Electronics	CAP ALUM 7700UF 150V SCREW	0
107LBB400M2BD Cornell Dubilier Electronics	CAP ALUM 100UF 20% 400V SNAP	0
SLP821M200C4P3 Cornell Dubilier Electronics	CAP ALUM 820UF 20% 200V SNAP	15005700
AVE106M50D16T-F Cornell Dubilier Electronics	CAP ALUM 10UF 20% 50V SMD	29104000
106AXZ025M Cornell Dubilier Electronics	CAP ALUM 10UF 20% 25V SMD	0
225BPS100M Cornell Dubilier Electronics	CAP ALUM 2.2UF 20% 100V RADIAL	0
MLP562M063EB1A Cornell Dubilier Electronics	CAP ALUM 5600UF 20% 63V FLATPACK	0
CGS202T300U4C Cornell Dubilier Electronics	CAP ALUM 2000UF 300V 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.