Abstract:This paper reports the comparison of two solder pastes made using a no clean flux platform and ultrafine SAC305 powders of Type 7 and Type8+, made using Heraeus’ Welco® technology. The application tests were carried out using 008004 components, the smallest passives used in SiPs. For the paste with Type 7 powder, the application tests complete with 12hrs of stencil evaluation have been reported, whereas for the paste with Type8+ powder, a preliminary work-life evaluation has been reported. Both pastes have bee… Show more
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