Electronics Forum: stencil gasketing (Page 9 of 9)

Re: solder mask between qfp pads

Electronics Forum | Wed Aug 18 21:03:41 EDT 1999 | Dave F

| | | | | One of the DFM suggestions I've seen is to remove the solder mask web, i.e. the mask between pads on 20-mil QFP devices. The rational is that if the mask is thicker than the pad the mask can prevent the stencil from making intimate contact

Re: bare board problem

Electronics Forum | Thu Jun 17 20:48:18 EDT 1999 | Earl Moon

| | first of all what is the technical term for the small amount of solder on a plated pad. we are getting poor screen printing gasketing on a 20 mil qfp due to this solder not being even or too high in spots and not covering the length of the pads.

Re: solder mask between qfp pads

Electronics Forum | Fri Aug 20 03:19:22 EDT 1999 | PeterB

| | | | | | One of the DFM suggestions I've seen is to remove the solder mask web, i.e. the mask between pads on 20-mil QFP devices. The rational is that if the mask is thicker than the pad the mask can prevent the stencil from making intimate conta

Re: bare board problem

Electronics Forum | Fri Jun 18 10:46:10 EDT 1999 | Scott Cook

| | | first of all what is the technical term for the small amount of solder on a plated pad. we are getting poor screen printing gasketing on a 20 mil qfp due to this solder not being even or too high in spots and not covering the length of the pads

Re: bare board problem

Electronics Forum | Fri Jun 18 11:37:10 EDT 1999 | Earl Moon

| | | | first of all what is the technical term for the small amount of solder on a plated pad. we are getting poor screen printing gasketing on a 20 mil qfp due to this solder not being even or too high in spots and not covering the length of the pa

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