Corrosive Effects of Solder Flux on Printed Circuit Boards.

Abstract

Some AN/PRC-25 radio sets have been reported inoperable by breakage of transistor and quartz crystal Kovar leads. It was demonstrated that these leads failed by stress-corrosion cracking. The only source of specific corrodent for this type of failure was chloride ions found in residual flux on printed circuitry. The clue to the corrosive effects of the flux was the identification of corrosion products found on the printed wiring. Recommended is scrupulous cleaning of the printed circuit boards followed by conformal coating. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1970
Accession Number
AD0871671

Entities

People

  • Aubrey J. Raffalovich

Organizations

  • United States Army Communications-Electronics Command

Tags

DTIC Thesaurus Topics

  • Chlorides
  • Circuit Boards
  • Circuits
  • Corrosion
  • Electronic Equipment
  • Identification
  • Material Degradation Processes
  • Printed Circuit Boards
  • Printed Circuits
  • Residuals
  • Stress Corrosion
  • Stress Corrosion Cracking
  • Transistors

Readers

  • Electrical Engineering
  • Electronics Engineering
  • Materials Science and Engineering.