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| Voiding in LGA (LT) soldering |
SMT-manufacturer  |
9/02/2010 |
13 posts
600 views
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We having issues installing the Linear Tech LTM8023. We have different soldering results in our PBfree testruns. The voiding and solderball rate is not stable (random positions and sizes). The pcb's (gold finish)are prebaked, the LGA's are stored in Drycabinets etc.
We tried already different value's of the following parameters: Stencil thickness, Stencil apperture, stencil reduction, different PCB manufacturers, P&P pressure and reflowprofile.
The only item we have not changed is solderpaste |
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