Aluminum Electrolytic Capacitors

Part Number	Description / PDF	Quantity
SLP331M315C7P3 Cornell Dubilier Electronics	CAP ALUM 330UF 20% 315V SNAP	0
CGS402T200V3C Cornell Dubilier Electronics	CAP ALUM 4000UF 200V SCREW	0
382LX182M250N052 Cornell Dubilier Electronics	CAP ALUM 1800UF 20% 250V SNAP	0
SEK101M050ST Cornell Dubilier Electronics	CAP ALUM 100UF 20% 50V RADIAL	0
106CKE400M Cornell Dubilier Electronics	CAP ALUM 10UF 20% 400V RADIAL	355213200
SLP102M180H3P3 Cornell Dubilier Electronics	CAP ALUM 1000UF 20% 180V SNAP	0
SLPX682M100H9P3 Cornell Dubilier Electronics	CAP ALUM 6800UF 20% 100V SNAP	1765
DCM413U050DC2B Cornell Dubilier Electronics	CAP ALUM 41000UF 50V SCREW	0
MLS821M200EB1C Cornell Dubilier Electronics	CAP ALUM 820UF 20% 200V FLATPACK	0
SLP181M400A4P3 Cornell Dubilier Electronics	CAP ALUM 180UF 20% 400V SNAP	0
AHA107M06D16T-F Cornell Dubilier Electronics	CAP ALUM 100UF 20% 6.3V SMD	0
MLSG191M200JK0C Cornell Dubilier Electronics	CAP ALUM 190UF 20% 200V FLATPACK	0
SLP103M063H4P3 Cornell Dubilier Electronics	CAP ALUM 10000UF 20% 63V SNAP	0
380LX471M200J022 Cornell Dubilier Electronics	CAP ALUM 470UF 20% 200V SNAP	0
HES312G350X3L Cornell Dubilier Electronics	CAP ALUM 3100UF 350V SCREW	0
108TTA063M Cornell Dubilier Electronics	CAP ALUM 1000UF 20% 63V AXIAL	3210
SLPX271M315C3P3 Cornell Dubilier Electronics	CAP ALUM 270UF 20% 315V SNAP	0
THAS822M016AB1C Cornell Dubilier Electronics	THINPACK CAP ALUM 8200 16V	0
381LQ182M250A052 Cornell Dubilier Electronics	CAP ALUM 1800UF 20% 250V SNAP	0
CGS153U100X4C Cornell Dubilier Electronics	CAP ALUM 15000UF 100V SCREW	1910

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.