Electronics Forum: bottom board (Page 1 of 119)

Re: bottom side epoxy

Electronics Forum | Thu Oct 07 05:53:54 EDT 1999 | Wolfgang Busko

| | I recently had the opportunity to visit the vendor who is making my boards. On my trip I noticed that the guy who was in charge of the SMD placement machine (brand new Samsung) still had to manuallly place about 20%-40% of the parts after placeme

Re: bottom side epoxy

Electronics Forum | Thu Oct 07 03:08:57 EDT 1999 | Chris May

| I recently had the opportunity to visit the vendor who is making my boards. On my trip I noticed that the guy who was in charge of the SMD placement machine (brand new Samsung) still had to manuallly place about 20%-40% of the parts after placement

Re: bottom side epoxy

Electronics Forum | Thu Oct 07 09:59:01 EDT 1999 | Dave F

| I recently had the opportunity to visit the vendor who is making my boards. On my trip I noticed that the guy who was in charge of the SMD placement machine (brand new Samsung) still had to manuallly place about 20%-40% of the parts after placement

Reflow oven bottom heaters

Electronics Forum | Thu Nov 16 22:01:06 EST 2017 | deanm

That model comes standard without bottom preheaters. Bottom preheaters are an option so I would think it is designed for general use unless you have some very thermally challenging boards. As long as you are within the process window, you'll be fine.

bottom side epoxy

Electronics Forum | Wed Oct 06 21:45:20 EDT 1999 | John

I recently had the opportunity to visit the vendor who is making my boards. On my trip I noticed that the guy who was in charge of the SMD placement machine (brand new Samsung) still had to manuallly place about 20%-40% of the parts after placement b

Re: bottom side epoxy

Electronics Forum | Fri Oct 08 16:48:24 EDT 1999 | Charles Morris

| I recently had the opportunity to visit the vendor who is making my boards. On my trip I noticed that the guy who was in charge of the SMD placement machine (brand new Samsung) still had to manuallly place about 20%-40% of the parts after placement

Epoxy on bottom of SMT component

Electronics Forum | Fri Nov 30 08:35:51 EST 2007 | stepheniii

We put glue on the bottom of the board that already has the topside SMT mounted. We populate the board. We put it through a cure profile. At this stage the topside components are soldered on. The bottom side components are glued on with NO solder on

Epoxy on bottom of SMT component

Electronics Forum | Mon Nov 26 21:41:09 EST 2007 | davef

Shy: Oh, we NOW understand what you're asking. Sorry to be so dense. We agree that the standoff of component from the board could end-up being a little heigher than the pad height when using chipbonder adhesive. We rarely see a problem.

Epoxy on bottom of SMT component

Electronics Forum | Mon Nov 26 22:05:34 EST 2007 | shy

currently i'm open my stencil aperture is 80% from the land pattern. is this will cause insufficient solder at the terminal component or not? the stencil thichness is 6mil and the board run using SMT pallet which i consider there will be no option f

Epoxy on bottom of SMT component

Electronics Forum | Fri Nov 23 16:09:01 EST 2007 | davef

We're not real clear about what you're trying to discuss, because most capacitors are packaged in epoxy with a solderable termination on each end. But lets throw a couple of ideas at the wall and see what sticks. If this epoxy is: * From the capaci

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