Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Solder Ball issue

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#64874

Solder Ball issue | 20 August, 2011

Hi,

We are facing solder ball issue in Chip component of PCB. We had tried DEK parameter setting changes and also reflow setting but still now not yet solve this problem. board details are, 1.Class 2 prodct 2.HASL Finishing Plz advice me what action point we have to taken.

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#64877

Solder Ball issue | 22 August, 2011

try to use stencil with "home plate" (arrow head) shapes of appertures for chips components. Any supplier of stencil can support you with this kind of design.

janz

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#64880

Solder Ball issue | 22 August, 2011

This problem means that you have too much paste. I would design a new stencil with reduced apertures.

Emil

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