Aluminum Electrolytic Capacitors

Part Number	Description / PDF	Quantity
SLP153M025H3P3 Cornell Dubilier Electronics	CAP ALUM 15000UF 20% 25V SNAP	0
AHA106M50D16T-F Cornell Dubilier Electronics	CAP ALUM 10UF 20% 50V SMD	0
380LX331M250K012 Cornell Dubilier Electronics	CAP ALUM 330UF 20% 250V SNAP	0
107LBA450M2BE Cornell Dubilier Electronics	CAP ALUM 100UF 20% 450V SNAP	220
475TTA350M Cornell Dubilier Electronics	CAP ALUM 4.7UF 20% 350V AXIAL	41214200
HHT222P016HE0 Cornell Dubilier Electronics	CAP ALUM 2200UF 16V AXIAL	0
380LX821M200A012 Cornell Dubilier Electronics	CAP ALUM 820UF 20% 200V SNAP	237
MLSG132M100EB0D Cornell Dubilier Electronics	CAP ALUM 1300UF 20% 100V FLATPCK	0
THA371M200AD1C Cornell Dubilier Electronics	THINPACK CAP ALUM 370 200V	0
380LX103M035A012 Cornell Dubilier Electronics	CAP ALUM 10000UF 20% 35V SNAP	2702
CGO103M045L Cornell Dubilier Electronics	CAP ALUM 10000UF 20% 45V SCREW	0
MLP193M7R5EK1D Cornell Dubilier Electronics	CAP ALUM 19000UF 20% 7.5V FLTPCK	0
WBR100-16A Cornell Dubilier Electronics	CAP ALUM 100UF 16V AXIAL	0
CGS363U063V4C Cornell Dubilier Electronics	CAP ALUM 36000UF 63V SCREW	0
382LX102M500B082VS Cornell Dubilier Electronics	CAP ALUM 1000UF 20% 500V SNAP	27
VPR502U016N2C Cornell Dubilier Electronics	CAP ALUM 5000UF 16V RADIAL	0
SLPX471M220E1P3 Cornell Dubilier Electronics	CAP ALUM 470UF 20% 220V SNAP	0
337BPA016M Cornell Dubilier Electronics	CAP ALUM 330UF 20% 16V AXIAL	0
AVS336M35E16T-F Cornell Dubilier Electronics	CAP ALUM 33UF 20% 35V SMD	0
MLP332M063EA1C Cornell Dubilier Electronics	CAP ALUM 3300UF 20% 63V FLATPACK	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.