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Investigation of Through-Hole Capacitor Parts Failures Following Vibration and Stress Testing

Published:

June 21, 2019

Author:

ACI Technologies, Inc.

Abstract:

Recently, an ACI Technologies (ACI) customer called to discuss failures that they had observed with some through-hole capacitor parts. The components were experiencing failures following vibration and accelerated stress testing. Upon receipt of the samples, ACI performed three levels of inspection and Energy Dispersive Spectroscopy (EDS) testing to investigate the root cause of the failures. These analyses enabled ACI to verify the elements comprising the solder joints and make the following recommendations in order to prevent future occurrences. The first inspection was to investigate the capacitor leads using optical microscopy, and no anomalies were found that could indicate bad parts from the vendor or improper handling prior to assembly. However, vertical fill in the barrel of the plated through-holes was too close to the IPC-A-610 minimum specification of 75% to determine a pass/fail condition, and therefore required further investigation....

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Company Information:

ACI, an authorized IPC Training Center operating the National Electronics Manufacturing Center of Excellence providing analytical testing, manufacturing and repair services to the electronics industry.

Philadelphia, Pennsylvania, USA

Consultant / Service Provider, Standards Setting / Certification, Training Provider

  • Phone 610 362 1200
  • Fax 610 362 1290

See Company Website »

Company Postings:

(24) products in the catalog

(1) upcoming training course

(64) technical library articles

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