Aluminum Electrolytic Capacitors

Part Number	Description / PDF	Quantity
ECA-1JM330B Panasonic	CAP ALUM 33UF 20% 63V RADIAL	0
EET-HC2S151HA Panasonic	CAP ALUM 150UF 20% 420V SNAP	65
EEU-FR1V680 Panasonic	CAP ALUM 68UF 20% 35V RADIAL	215978
EEU-FM1C392B Panasonic	CAP ALUM 3900UF 20% 16V RADIAL	0
EEU-FS0J622L Panasonic	CAP ALUM 6200UF 20% 6.3V T/H	999
EEE-FP1E151AP Panasonic	CAP ALUM 150UF 20% 25V SMD	15
EEV-EB2E470M Panasonic	CAP ALUM 47UF 20% 250V SMD	122
EEE-FPA221XAP Panasonic	CAP ALUM 220UF 20% 10V SMD	232453
EET-HC2S331CA Panasonic	CAP ALUM 330UF 20% 420V SNAP	6
ECA-0JM101 Panasonic	CAP ALUM 100UF 20% 6.3V RADIAL	5240
EEE-TC1V470P Panasonic	CAP ALUM 47UF 20% 35V SMD	721
EEU-FK1E222L Panasonic	CAP ALUM 2200UF 20% 25V RAD TH	894
EEU-HD1E562B Panasonic	CAP ALUM 5600UF 20% 25V RADIAL	6427
EEU-FR0J122L Panasonic	CAP ALUM 1200UF 20% 6.3V RADIAL	0
EEU-FC1H100L Panasonic	CAP ALUM 10UF 20% 50V RADIAL	0
EEU-HD1C822B Panasonic	CAP ALUM 8200UF 20% 16V RADIAL	84
EEU-EE2W100 Panasonic	CAP ALUM 10UF 20% 450V RADIAL	2965
EEE-FK1V151GP Panasonic	CAP ALUM 150UF 20% 35V SMD	0
EEE-HAJ330WAR Panasonic	CAP ALUM 33UF 20% 6.3V SMD	671
ECE-A1CKS330I Panasonic	CAP ALUM 33UF 20% 16V RADIAL	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.