Solder Balls on 0805 capacitors

Solder Balls on 0805 capacitors author avatar

2/2/2017 3:55:23 AM

We've been experiencing solder balls on 0805 caps. We have modified the reflow profile and had some success, but some balling still persists. The balls always form from under the cap between the lands. I measured the distance between the lands at .031". Is this too small a distance? I tried the IPC land pad calculator and it actually said I could go even smaller. Is there a down side to increasing this distance aside from maybe creating a smaller zone for placement accuracy? If I go to .040" can I expect any reduction in solder balling between lands?

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Augus avatar

Augus

2/4/2017 3:55:23 AM

Inictllgenee and simplicity – easy to understand how you think.

julien.brasart avatar

julien.brasart

2/4/2017 3:55:23 AM

Impressive and helpful.

Travis Kneale avatar

Travis Kneale

2/4/2017 3:55:23 AM

Impressive

Carlos Ruiz avatar

Carlos Ruiz

2/4/2017 3:55:23 AM

It help me a lot. Thank you.

Dimitri Tskhovrebadz avatar

Dimitri Tskhovrebadz

2/4/2017 3:55:23 AM

Keep your sharing like this. You have made a nice post and I really learned a lot from you. It will help me work out my new project.

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