Electronics Forum: stencil (Page 406 of 540)

Re: Flux evaporation....???

Electronics Forum | Thu Oct 21 11:32:15 EDT 1999 | John Thorup

Larry Elaborating on the specific question, yes, the volatile solvents in the flux can and will evaporate. Evaporate completely in any reasonable amount of time? Probably not. What tends to happen is that the exposed paste dries on the surface and

Re: Metal Inspection Templates

Electronics Forum | Tue Sep 21 12:50:08 EDT 1999 | Hugh Martin

I like to see if anyone has any info or experinces with metal inspection templates in a post oven process. My problem issue is the ESD, since they are metal(12 mil stencil material). I welcome any comment. Thank you. Just for

Re: Metal Inspection Templates

Electronics Forum | Sat Sep 25 01:42:52 EDT 1999 | john

I like to see if anyone has any info or experinces with metal inspection templates in a post oven process. My problem issue is the ESD, since they are metal(12 mil stencil material). I welcome any comment. Thank you. don't try overlays o

Re: screen printer x axis

Electronics Forum | Fri Sep 17 15:20:52 EDT 1999 | Earl Moon

HI everyone, We are using a Siemens ap-25 screen printer, in the past we have not had any problems with adhesive placement until a couple of weeks ago. It seems the x axis has decided that it should be set somewhere between .00085 and .001

Re: Camelot Glue Dispenser Off-line Programming

Electronics Forum | Wed Sep 15 12:02:19 EDT 1999 | Jim Trent

Does anyone know the best way to program my Camelot glue dispenser off line? I really like the machine, it just takes me too long to program it. We do contract work so I can get gerber data for all (most) of my assemblies. I need to get these pro

Re: SPOT (Solder Paste On Thru-Hole)

Electronics Forum | Tue Aug 31 17:53:02 EDT 1999 | Dennis_F

Planning to evaluate the above process... Can anyone can give me some tips/infos on the above.... e.g. stencil aperture design, aperture ratio, common problems and solutions they encountered on the above process, i

Re: SPOT (Solder Paste On Thru-Hole)

Electronics Forum | Wed Sep 01 13:51:38 EDT 1999 | Dave F

Planning to evaluate the above process... Can anyone can give me some tips/infos on the above.... e.g. stencil aperture design, aperture ratio, common problems and solutions they encountered on the above process, is the profile different from a

Re: Cylindrical diodes Missing during SMT process.

Electronics Forum | Tue Aug 24 16:11:21 EDT 1999 | Scott Cook

Hello everyone, We found many cylindrical diodes missing during SMT process. Could someone tell us how to prevent this problem? Is it effective to change the shape of stencil apture or reduce fan speed in reflow oven? Thanks in advance. Gyve

Re: Solder Paste from 500 gram tubes.

Electronics Forum | Wed Jul 21 11:49:24 EDT 1999 | Deon Nungaray

I recently switched from solder paste in 500 gram jars to 500 gram tubes. I did this to try to limit the time the paste is exposed to the room environment. But we have a need to clean the stencil every 4 - 5 boards which means taking the bulk

Re: Epoxy printing and wave soldering on 0603 and 0402 components

Electronics Forum | Mon Jul 12 21:40:56 EDT 1999 | Earl Moon

Hi, I need some urgent informations on stencil design guidelines on how to perform epoxy printing on 0603 and 0402 components. Could anyone help? ( Reflow process is not possible because of some other constriants) Secondly, I need also f


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