Electronics Forum: side (Page 1 of 491)

Component side by side gap

Electronics Forum | Thu Jun 25 05:19:39 EDT 2020 | SMTA-Davandran

Dear all, Anyone know what is minimum gap between SMT component.? Anyone have design guideline for it.

Assembling one side SMT one side TH

Electronics Forum | Wed Aug 10 13:55:38 EDT 2011 | franxsmt

Hi all, I would like to assemble boards that have one side all SMD and the other side all TH components. I have no idea how to do it. Any help will be appreciated.

Assembling one side SMT one side TH

Electronics Forum | Wed Aug 10 15:45:49 EDT 2011 | franxsmt

Maybe I was not clear in my original post. So we have boards that have SMD components on one side and TH components on the opposite side. We want to assemble the boards using our SMT and Wave lines. Now the problem is that if we solder the SMD firs

Assembling one side SMT one side TH

Electronics Forum | Thu Aug 11 07:01:34 EDT 2011 | franxsmt

Thank you very much for your informative and helpful reply. I have a few more questions:) 1- So for the case 1: should I apply the glue to the PCB with the same method as I apply solder paste? (with screen printer and squeegee). If so, I would guess

Assembling one side SMT one side TH

Electronics Forum | Wed Aug 10 14:49:11 EDT 2011 | davef

There are several ways to assemble a board like you describe. Since you're asking this question, we assume that your production technology is limited. What tools, machinery, and equipment can you access?

Assembling one side SMT one side TH

Electronics Forum | Wed Aug 10 14:56:21 EDT 2011 | franxsmt

We have an SMT line (Screen Printer, P&P, Reflow) and a Wave machine.

Assembling one side SMT one side TH

Electronics Forum | Wed Aug 10 16:42:10 EDT 2011 | kahrpr

Not an easy question to answer with out seeing the board. There is selective soldering, gluing, maybe a wave soldering pallet. As DaveF said since your asking the question I would assume your shops expertise is limited.

Assembling one side SMT one side TH

Electronics Forum | Thu Aug 11 09:18:18 EDT 2011 | blnorman

We used process 1 that dave detailed. We used screen print adhesive on one line and pin transfer on another. The adhesive dots were applied to the body of the component allowing the wave to form the solder joints.

Assembling one side SMT one side TH

Electronics Forum | Wed Aug 10 16:37:35 EDT 2011 | davef

Yes, there are ways to machine process boards like this. The devil is in the detail. In no particular order, your choices are: Process flow #1: * Print chipbonder on the surface mount side for SMT parts * Mount SMT components * Cure adhesive, if r

Assembling one side SMT one side TH

Electronics Forum | Thu Aug 11 15:11:35 EDT 2011 | davef

Franx: In response to your follow-up questions ... For the case 1: Q1: Should I apply the glue to the PCB with the same method as I apply solder paste? (with screen printer and squeegee). A1: Correct. Glue can be stencil printed, dispensed, or pin t

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