Autors: Pranchov, R. B., Palabikjan, M., Serafimov, N.
Keywords: Restriction of Hazardous Substances (RoHS), Pb - free solder alloys, lead contamination, thermal - mechanical fatigue, temperature cycles

Abstract: In accordance with the requirements and restrictions of the EU concerning the use of toxic materials and substances (RoHS), alternative Pb - free solder alloys have been taken into consideration in the last few years. Solders implemented by means of traditional Sn - Pb eutectic and near - eutectic alloys reveal insufficiency in shear strength, resistance to creep and mechanical fatigue. Pb - free alloys based solders are expected to overcome the above mentioned problems and limitations. An investigation of the mechanical properties of different Pb - based and Pb - free solder alloy type


  1. OJEU, 2003, DIRECTIVE 2002/95/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL, Official Journal of the European Union,, Volume 37/19, pp.
  2. R. Pranchov, 2005, ICEST 2005 : A Study of Lead - Free Surface Mount Technologies, June 29 - July 1, June 29 - July 1, <Serbia and Montenegro>,
  3. Jin, S.,, 1993, JOM, JOM, Volume 1, pp. 13
  4. Humpston, G., Jacobson, M, D.,, 1993, Principles of Soldering nad Brazing, USA, ASM International, Materials Park
  5. Hernandez, L, C.,, 1997, Mechanical Properties of Pb - Free Solder Alloys on Thick Film Hybrid Microcircuits, USA, US Department of Energy, Sandia National Laboratories


ELECTRONICS’ 2005,21 – 23 September, vol. 5, pp. 174, 2005, Bulgaria,

Вид: пленарен доклад в международен форум