METHODS FOR TESTING THE ENVIRONMENTAL INFLUENCE ON ELECTRONICS. CASE STUDY REGARDING ELECTRONICS IN TRAFFIC ENVIRONMENTS

METODER FOER PROVNING AV ELEKTRONIKKOMPONENTER VAD AVSER PAAVERKAN AV LUFTFOERORENINGAR. FALLSTUDIE AVSEENDE ELEKTRONIK I TRAFIKMILJOE

To simulate the corrosion damages observed on the electronics of the police radar equipment, a series of laboratory tests were performed with electronics components on printed circuit cards. The tests showed that corrosion of the electronics was strongly dependent on the presence and condition of the surface protecting lacquer layer on the circuit cards. Other factors such as length of operating time, presence of fluxing material left on the surface of the electronics, the corrosivity of the exposure locality, seem only to influence the corrosion marginally. From this study it was concluded that high humidity alone is not sufficient to attain the corrosive effects observed from practice. Adding the following pollutants: H2S, SO2, NO2, and NaCI(s), to humid air resulted in a better agreement. Oxides and sulfates in addition to small amounts of chlorides, nitrates and sulfides were found in the corrosion products of the specimen exposed in the laboratory and on the electronics of the police radar equipment. The general conclusion of the study is that it seems both needed and possible to develop more tailor made standard corrosion test methods for electronic components used in traffic environments. Such methods are to be used in verifying the corrosion resistance in different environments of operation for electronic components.

  • Availability:
  • Corporate Authors:

    Statens Provingsanstalt, Polymerteknik

    Box 857
    Boraas,   Sweden 
  • Authors:
    • ERIKSSON, P
  • Publication Date: 1992

Language

  • Swedish

Media Info

  • Features: References;
  • Pagination: 32 p.
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00667941
  • Record Type: Publication
  • Source Agency: Swedish National Road and Transport Research Institute (VTI)
  • ISBN: 91-7848-372-7
  • Files: ITRD
  • Created Date: Nov 2 1994 12:00AM