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

fYear

2012

fDate

9-13 May 2012

Firstpage

168

Lastpage

172

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics Technology (ISSE), 2012 35th International Spring Seminar on

Conference_Location

Bad Aussee

ISSN

2161-2528

Print_ISBN

978-1-4673-2241-6

Electronic_ISBN

2161-2528

Type

conf

DOI

10.1109/ISSE.2012.6273132

Filename

6273132