Aluminum Electrolytic Capacitors

Part Number	Description / PDF	Quantity
EEU-TA1A331BJ Panasonic	CAP ALUM 330UF 20% 10V RADIAL	0
EEE-1HA101UAP Panasonic	CAP ALUM 100UF 20% 50V SMD	500
EEE-1HA1R0AR Panasonic	CAP ALUM 1UF 20% 50V SMD	213
EEU-FS2A151LB Panasonic	CAP ALUM 150UF 20% 100V THRUHOLE	746
EEU-TP1E471B Panasonic	CAP ALUM 470UF 20% 25V RADIAL	823
EEU-FC1C560B Panasonic	CAP ALUM 56UF 20% 16V RADIAL	0
EEU-FC1C391 Panasonic	CAP ALUM 390UF 20% 16V RADIAL	986
EEE-HB1H100AP Panasonic	CAP ALUM 10UF 20% 50V SMD	7
ECA-2AHG220 Panasonic	CAP ALUM 22UF 20% 100V RADIAL	50
EEE-FK1C101AL Panasonic	CAP ALUM 100UF 16V 20% SMD	877
EEE-FN1A221UV Panasonic	CAP ALUM 220UF 10VDC 20% SMD	1000
ECA-1JM331 Panasonic	CAP ALUM 330UF 20% 63V RADIAL	0
EEE-FN1K100XL Panasonic	CAP ALUM 10UF 80V 20% SMD	1800
EEU-EB2C101 Panasonic	CAP ALUM 100UF 20% 160V RADIAL	7
ECA-2DM330 Panasonic	CAP ALUM 33UF 20% 200V RADIAL	0
EET-UQ2E122LA Panasonic	CAP ALUM 1200UF 20% 250V SNAP	10
EEE-TG1H220P Panasonic	CAP ALUM 22UF 20% 50V SMD	10463
ECA-1HM220 Panasonic	CAP ALUM 22UF 20% 50V RADIAL	9966
EEE-1CA221XAP Panasonic	CAP ALUM 220UF 20% 16V SMD	40
EEE-FN1H101L Panasonic	CAP ALUM 100UF 50V 20% SMD	895

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.