Electronics Forum: qfp solder (Page 1 of 60)

solder mask between qfp pads

Electronics Forum | Sat Aug 14 17:39:37 EDT 1999 | Gerry S.

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 with the

Re: solder mask between qfp pads

Electronics Forum | Sun Aug 15 14:56:03 EDT 1999 | Dean

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 with th

Re: solder mask between qfp pads

Electronics Forum | Mon Aug 16 04:47:04 EDT 1999 | Charles Stringer

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 wit

Re: solder mask between qfp pads

Electronics Forum | Mon Aug 16 04:34:54 EDT 1999 | Earl Moon

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 with

Re: solder mask between qfp pads

Electronics Forum | Mon Aug 16 16:54:57 EDT 1999 | Scott Cook

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 with th

Re: solder mask between qfp pads

Electronics Forum | Mon Aug 16 07:54:05 EDT 1999 | Peter Barton

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 w

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: 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

Less solder with fine pitch qfp

Electronics Forum | Tue Sep 30 14:06:04 EDT 2008 | realchunks

What pitch? You can go 5 mil or even 6 mil stencils depending on your screen printer. Also what do you consider "less solder"? What defect are you having. Remember on a QFP you use the heel filet to determine proper solder joint - not the toe.

Less solder with fine pitch qfp

Electronics Forum | Thu Oct 02 08:26:41 EDT 2008 | rway

We had similar issues until we went to a 6 mil stencil thickness.

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