Solder paste volume require.

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Hi, I facing some 1005 component with poor wetting and lo... - Jun 01, 2006 by

IPC a 610 has this info. An 0402 however mat require more s... - Jun 01, 2006 by RDR

Hi Russ, Thanks for your input. Currently, our stencil i... - Jun 01, 2006 by EC

Hmmm interesting, we utilize 5 mil stencils and print to sam... - Jun 02, 2006 by RDR

Hi Russ, I could not send any attach file using smtnet...... - Jun 04, 2006 by EC

Be carefull of the effect on other components with a 7mil st... - Jun 06, 2006 by PeteC

can you also please tell us the section in IPC-610?...is thi... - Jun 07, 2006 by Amol Kane

#41924

Solder paste volume require. | 1 June, 2006

Hi,

I facing some 1005 component with poor wetting and look like not enough solder...... Is there any standard solder paste volume requirement.

Appreciate all the input.

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RDR

#41929

Solder paste volume require. | 1 June, 2006

IPC a 610 has this info. An 0402 however mat require more solder than what IPC states (basically evidence of wetted fillet for class2). more paste = more flux = better wetting.

Why don't you tell us what pad sizes and layout you have and stencil thickness.

Russ

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#41947

Solder paste volume require. | 1 June, 2006

Hi Russ,

Thanks for your input. Currently, our stencil is at 5 mil thickness and the paste height from 5.5 to 6.5mil. I have increase the paste height to 7 to 7.5 mil and great improve....... I just need some data to present to my management and telling them that stencil thickness need to change.

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RDR

#41954

Solder paste volume require. | 2 June, 2006

Hmmm interesting, we utilize 5 mil stencils and print to same height as you and do not experience these failures. May I ask what paste you are using and what the spacings are of your pad design? But anyhow, if it works it works.

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