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Failure-Analysis Case History—Tantalum Electrolytic Capacitor

Author: Stan Silvus, Southwest Research Institute®   |   Document Download   |   Product code: ZEDFA0904P26

File size: 468 KB

Classified as: Electronic Materials Failure Analysis

Price: $15.00 Member Price: $12.00

Dry tantalum electrolytic capacitors (hereinafter referred to as "tantalum capacitors") are widely used in modern electronic equipment because they have high capacitances at useful working voltages, relatively low effective series resistances (ESRs), and relatively small packages. Another important factor is that the tantalum capacitor does not have a wear-out mechanism like that of the aluminum electrolytic capacitor. However, for all of their good points, tantalum capacitors have some limitations that, if not taken into account during circuit design, may produce catastrophic failures. The effect of one such limitation was involved in the failure discussed in this case history.

  • From: Electronic Device Failure Analysis, Volume 9, Issue 4, November 2007 (ASM International)
  • Published: November 01, 2007
  • Pages: 5
  • Review Type: Peer reviewed