Aluminum Electrolytic Capacitors

Part Number	Description / PDF	Quantity
NEV10000M25HB NTE Electronics, Inc.	CAP ALUM 10000UF 20% 25V RADIAL	816
VHT470M160 NTE Electronics, Inc.	CAP ALUM 470UF 20% 160V RADIAL	84
NEV330M6.3 NTE Electronics, Inc.	CAP ALUM 330UF 20% 6.3V RADIAL	297
NEVH10M350CD NTE Electronics, Inc.	CAP ALUM 10UF 350V RADIAL	404
NEH22M35BA NTE Electronics, Inc.	CAP ALUM 22UF 20% 35V AXIAL	144
NEHH100M450JB NTE Electronics, Inc.	CAP ALUM 100UF 450V AXIAL	249
NEV1000M6.3DE NTE Electronics, Inc.	CAP ALUM 1000UF 20% 6.3V RADIAL	2492
NEH68M6.3 NTE Electronics, Inc.	CAP ALUM 68UF 20% 6.3V AXIAL	1540
NEV22M25AA NTE Electronics, Inc.	CAP ALUM 22UF 20% 25V RADIAL	1572
NPR1000M16 NTE Electronics, Inc.	CAP ALUM 1000UF 20% 16V RADIAL	499
NEH1500M6.3 NTE Electronics, Inc.	CAP ALUM 1500UF 20% 6.3V AXIAL	16
VHT68M10 NTE Electronics, Inc.	CAP ALUM 68UF 20% 10V RADIAL	103
NEVH2.2M250AB NTE Electronics, Inc.	CAP ALUM 2.2UF 250V RADIAL	932
NEH6800M25HB NTE Electronics, Inc.	CAP ALUM 6800UF 20% 25V AXIAL	330
MSC125V108 NTE Electronics, Inc.	CAP ALUM 108UF 125V QC TERM	60
NEH22000M10II NTE Electronics, Inc.	CAP ALUM 22000UF 20% 10V AX	353
NPA4.7M63 NTE Electronics, Inc.	CAP ALUM 4.7UF 20% 63V AXIAL	113
NEH220M16-10 NTE Electronics, Inc.	CAP-220UF 16V AXIAL	0
VHT1000M50 NTE Electronics, Inc.	CAP ALUM 1000UF 20% 50V RADIAL	217
NEVH2.2M160AB NTE Electronics, Inc.	CAP ALUM 2.2UF 160V RADIAL	579

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.