Title :
Surface insulation resistance testing of solder pastes with protective coating
Author :
Pantazica, Mihaela ; Marghescu, Cristina ; Tamas, Cosmin ; Svasta, Paul ; Plotog, Ioan ; Varzaru, Gaudentiu
Author_Institution :
Center for Technol. Electron. & Interconnection Tech., Politeh. Univ. of Bucharest, Bucharest, Romania
Abstract :
This paper presents the results obtained after performing SIR testing in order to evaluate different solder materials. The scope of the test was to determine the effects of the reflow process used and of a protective coating on surface insulation resistance (SIR) in the presence of medium heat and high humidity for several solder pastes. There were used special designed test pattern boards according to IPC-B-24 and several solder pastes with no-clean fluxes: SAC305, OM338PT, OM5300, SN100C and SN100C-XF3. After 110 hours, the measurements showed the reduced values of the average surface insulation resistance. The optical inspection did not show any electrochemical formation (dendrites) between conductors.
Keywords :
inspection; insulating coatings; insulation testing; printed circuit testing; protective coatings; reflow soldering; surface resistance; IPC-B-24; OM338PT; OM5300; SAC305; SN100C-XF3; electrochemical formation; optical inspection; protective coating; reflow process; solder materials; solder pastes; surface insulation resistance testing; test pattern boards; time 110 hour; Coatings; Insulation; Metals; Surface resistance; Surface treatment; Voltage measurement;
Conference_Titel :
Electronics Technology (ISSE), 2012 35th International Spring Seminar on
Conference_Location :
Bad Aussee
Print_ISBN :
978-1-4673-2241-6
Electronic_ISBN :
2161-2528
DOI :
10.1109/ISSE.2012.6273132
