TY - JOUR
T1 - Investigation of moisture uptake into printed circuit board laminate and solder mask materials
AU - Conseil-Gudla, Hélène
AU - Gudla, Visweswara C.
AU - Borgaonkar, Shruti
AU - Jellesen, Morten S.
AU - Ambat, Rajan
PY - 2017/4/1
Y1 - 2017/4/1
N2 - Presence of moisture in a printed circuit board (PCB) laminate, typically made of glass fibres reinforced epoxy polymer, significantly influences the electrical functionality in various ways and causes problems during soldering process. This paper investigates the water uptake of laminates coated with different solder mask materials and exposed to saturated water vapour and liquid water. The solder masks are characterised for their microstructure and constituent phases using scanning electron microscopy and X-ray diffraction. The observations are correlated with the moisture absorption characteristic such as diffusivity, permeability, and solubility. In addition, the effect of a reflow soldering simulation on microstructural changes and on increase of water uptake of the materials has been analysed.
AB - Presence of moisture in a printed circuit board (PCB) laminate, typically made of glass fibres reinforced epoxy polymer, significantly influences the electrical functionality in various ways and causes problems during soldering process. This paper investigates the water uptake of laminates coated with different solder mask materials and exposed to saturated water vapour and liquid water. The solder masks are characterised for their microstructure and constituent phases using scanning electron microscopy and X-ray diffraction. The observations are correlated with the moisture absorption characteristic such as diffusivity, permeability, and solubility. In addition, the effect of a reflow soldering simulation on microstructural changes and on increase of water uptake of the materials has been analysed.
UR - http://www.scopus.com/inward/record.url?scp=85008462624&partnerID=8YFLogxK
U2 - 10.1007/s10854-016-6292-5
DO - 10.1007/s10854-016-6292-5
M3 - Article
AN - SCOPUS:85008462624
SN - 0957-4522
VL - 28
SP - 6138
EP - 6151
JO - Journal of Materials Science: Materials in Electronics
JF - Journal of Materials Science: Materials in Electronics
IS - 8
ER -