Category:PCB Solder Paste

Group Administrators: 1 | Group Member: 198 | Group Threads: 217

Solder paste is a material used in the manufacture of printed circuit boards to connect surface mount components to pads on the board. It is also possible to solder through hole pin in paste components by print solder paste in/over the holes.

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Search Results: 217 Threads,22 Pages Submit Project
3 comments
711 views

Paste Over Hole Insertions

We are attempting to increase utilization of our Pick and Place equipment (MY9) by transfering more components into the SMT area. Large gains could be had if we can successfully place a metal socket w...(view more)

don_peter
2017/2/2 8:03:40
3 comments
816 views

Any portable equipment to check lead free solder

As a QA guy, I cannot find a portable equipment to check lead free solder in the container during processing.(view more)

rayy2007
2017/2/2 7:57:32
3 comments
894 views

Solder flags

After hand soldering I am getting solder flags on my boards (see attachments). Any one have an idea on how to get rid of these flags or are those acceptable?(view more)

olah.mihaly
2017/2/2 6:56:20
4 comments
754 views

Altera PQFP240 Solderability

We are having some difficulty soldering a 240 pin Altera device. We use Alpha WS-609, a very generic profile for that solder paste, and a 6 mil stencil with laser cut apertures (1:1 ratio). This is a ...(view more)

certainly.90
2017/2/2 6:07:35
5 comments
776 views

Soldering die to heatsinks

Currently I am in the buisness of soldering bare die to the top surface of a copper heat sink. Is any one else have some exprience in this process that can help. We heat a copper slug through a contol...(view more)

eakkarach
2017/2/2 6:06:09
3 comments
1596 views

Burn from Soldering Iron or Measling

I am having trouble determining what the IPC classification is for the attachment. Also... if a burn, is it a defect and for what classes?(view more)

Arthur
2017/2/2 5:48:47
5 comments
769 views

Good Solder Joint Failures

Hope some of you out there can help me with this one. I am getting feedback from our test department that they are showing opens on solder joints which have visually good wetting. The touch-up operato...(view more)

Esteban
2017/2/2 5:32:53
5 comments
765 views

rework of bgas and csps

I am a student doing a project on rework os BGAS and CSPS and Im looking for information on it especially rework of csps Has anyone got x-ray images of csps after rework or of BGAS to show csps with s...(view more)

Gabe
2017/2/2 5:25:11
5 comments
837 views

Paste-in-Hole

I need to know if there are any special component pad designs that need to be considered when evaluating paste-in-hole? We have a few through hole connectors that are good candidates to place pre refl...(view more)

Roberto Ross
2017/2/2 5:21:27
5 comments
761 views

gold embrittlement on paste

I discovered that we have some gold plated (30 mico in.) through hole connectors which were Paste In Hole soldered (60 sec at reflow) on a HASL PCB. Do we have an embrittlement reliability issue? The ...(view more)

Augus
2017/2/2 5:13:23

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