Aluminum Electrolytic Capacitors

Part Number	Description / PDF	Quantity
SLP333M016H5P3 Cornell Dubilier Electronics	CAP ALUM 33000UF 20% 16V SNAP	0
HVMLS272M075EB1A Cornell Dubilier Electronics	CAP ALUM 2700UF 20% 75V FLATPACK	0
381LX561M180J032 Cornell Dubilier Electronics	CAP ALUM 560UF 20% 180V SNAP	0
PSU64515 Cornell Dubilier Electronics	CAP ALUM 645UF 125V QC TERM	0
CGS783U040X6L Cornell Dubilier Electronics	CAP ALUM 78000UF 40V SCREW	0
MLP213M016EA1C Cornell Dubilier Electronics	CAP ALUM 21000UF 20% 16V FLATPCK	0
MLP562M035EK0A Cornell Dubilier Electronics	CAP ALUM 5600UF 20% 35V FLATPACK	36
108CKE010M Cornell Dubilier Electronics	CAP ALUM 1000UF 20% 10V RADIAL	2349
SLPX393M010H3P3 Cornell Dubilier Electronics	CAP ALUM 39000UF 20% 10V SNAP	0
MLSG401M150JH0C Cornell Dubilier Electronics	CAP ALUM 400UF 20% 150V FLATPACK	0
476SML035MD8 Cornell Dubilier Electronics	CAP ALUM 47UF 20% 35V SMD	0
AHA476M50F24T-F Cornell Dubilier Electronics	CAP ALUM 47UF 20% 50V SMD	0
381LQ681M400A452 Cornell Dubilier Electronics	CAP ALUM 680UF 20% 400V SNAP	586
MLS401M100EK1A Cornell Dubilier Electronics	CAP ALUM 400UF 20% 100V FLATPACK	0
THAS352M035AB0C Cornell Dubilier Electronics	CAP ALUM 3500UF 20% 35V T/H	0
336TTA350M Cornell Dubilier Electronics	CAP ALUM 33UF 20% 350V AXIAL	1416
HVMLS601M150EA0A Cornell Dubilier Electronics	CAP ALUM 600UF 20% 150V FLATPACK	0
380LX101M315H012 Cornell Dubilier Electronics	CAP ALUM 100UF 20% 315V SNAP	0
336TTA160M Cornell Dubilier Electronics	CAP ALUM 33UF 20% 160V AXIAL	4074400
MLS332M060EB1A Cornell Dubilier Electronics	CAP ALUM 3300UF 20% 60V 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.