Vibration-Resistant Surface-Mount Electrolytic Capacitors

KYOCERA AVX has released the AEVA and AEVB Series of compact, vibration-proof aluminum electrolytic capacitors engineered for harsh industrial environments. These surface-mount devices provide high capacitance-voltage performance and are specifically designed to address mechanical stress challenges in robotics, embedded motor control units, and photovoltaic inverters.

Mitigating Mechanical Stress in Industrial Applications
Mechanical stress has traditionally limited the deployment of standard aluminum electrolytic capacitors in high-vibration applications such as power tools, direct current (DC/DC) converters, and uninterruptable power supplies (UPS). To overcome these limitations, the newly developed capacitors incorporate specialized plastic supports and unique termination shapes designed to maximize the soldering area. This structural engineering increases overall board-mounting strength, allowing the components to withstand acceleration forces of up to 30g while maintaining stable electrical performance within the broader industrial power electronics ecosystem.

Technical Specifications and Thermal Endurance
The structural enhancements are paired with a liquid electrolyte dielectric system, yielding a smaller packaging footprint compared to conventional can-type capacitors. Both series exhibit a low equivalent series resistance (ESR) and a maximum leakage current of ≤0.01CV or 3μA.

The AEVA Series operates across a temperature range of -55°C to +125°C with endurance ratings up to 4,000 hours at rated voltage. Available in five case sizes (0810, 1010, 1213, 1616, and 1821), this series covers voltage ratings from 6.3 to 100VDC and capacitance values between 10μF and 4,700μF (±20%). Conversely, the AEVB Series covers a thermal range of -40°C to +125°C, achieving up to 5,000 hours of endurance at 125°C. It is supplied in four case sizes (0810, 1010, 1213, and 1616), supporting 16 to 50VDC and 47μF to 2,200μF.

Manufacturing Integration and Compliance
The capacitor design directly addresses the physical demands of high-vibration environments. Mack Cartagena, Staff Research Development Engineer at KYOCERA AVX, noted that the integration of unique plastic supports and specialized terminations increases the soldering area, significantly improving board-mounting strength to ensure reliable performance under high acceleration limits. To facilitate integration into automated manufacturing lines, the halogen-free and RoHS-compliant components are shipped on 15-inch reels and are fully compatible with standard reflow soldering processes.

Additional Context
This section details technical specifications and competitive benchmarking not included in the original news release.

Standard surface-mount aluminum electrolytic capacitors generally withstand up to 10g of vibration before experiencing structural failure or solder joint fatigue. In the high-reliability electronic component ecosystem, capacitors engineered for severe mechanical stress, such as the Panasonic V-TC or Nichicon UXY series, similarly utilize auxiliary terminal bases and high-wall plastic support structures to achieve a 30g vibration resistance rating. The objective benchmark for these specialized components requires surviving prolonged frequency sweeps from 10 to 2,000 Hz at high amplitudes without exhibiting capacitance shifts or physical detachment. The introduction of the AEVA and AEVB lines provides equivalent mechanical robustness while focusing on high capacitance-to-volume (CV) ratios, allowing engineers to minimize the required printed circuit board (PCB) footprint in densely packed industrial control units.

Edited by Aishwarya Mambet, Induportals Editor, with AI assistance.

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