Electronics Forum: bottom (Page 1 of 227)

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 | 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 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 | 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

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

Epoxy on bottom of SMT component

Electronics Forum | Sun Dec 02 22:00:21 EST 2007 | shy

The idea for solder at bottom side is for component such as SOIC, QFP and chip. This solder is needed since not entire bottom component had glue. that's why we're combining both solder paste and glue and reflow at the same time.

Epoxy on bottom of SMT component

Electronics Forum | Thu Nov 29 13:05:46 EST 2007 | stepheniii

I really hate to ask but must. Are the components that are falling off, the components that don't have glue? Seriously not all the parts on the bottom are glued on? How do they stay on during the wave? The normal way is to run the top SMT as normal

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 | Fri Nov 23 07:51:25 EST 2007 | shy

Hi there, kindly help to advice me either epoxy/glue at bottom SMT component such as chip package 2012 will cause the component to be non-wetting after run reflow process?

Epoxy on bottom of SMT component

Electronics Forum | Tue Nov 27 06:11:42 EST 2007 | shy

Hi Loco, my PCBA got top side and bottom side and 90% SMT and 10% THP (top side) which need to be cover by wave solder. And that's why i need to go through reflow and wave.


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