Electronics Forum: qfp bent leads (Page 3 of 50)

Re: 20 mil qfp bridging

Electronics Forum | Thu Aug 12 20:31:57 EDT 1999 | Kelly Morris

| | Hello | | | | Having a problem with bridging on 20mil pitch qfp, only on the lead groups where squeegee goes over width of apertures. Using MPM sp-200 semi-auto, chem-etch stencil, 9-10mil width opening | | 100 durometer blade. Getting "tails" o

Re: 20 mil qfp bridging

Electronics Forum | Thu Aug 12 20:48:05 EDT 1999 | JAX

| | | Hello | | | | | | Having a problem with bridging on 20mil pitch qfp, only on the lead groups where squeegee goes over width of apertures. Using MPM sp-200 semi-auto, chem-etch stencil, 9-10mil width opening | | | 100 durometer blade. Getting "

Re: 20 mil qfp bridging

Electronics Forum | Thu Aug 12 21:08:39 EDT 1999 | ScottM

| | | | Hello | | | | | | | | Having a problem with bridging on 20mil pitch qfp, only on the lead groups where squeegee goes over width of apertures. Using MPM sp-200 semi-auto, chem-etch stencil, 9-10mil width opening | | | | 100 durometer blade. G

Re: 20 mil qfp bridging

Electronics Forum | Thu Aug 12 22:38:44 EDT 1999 | Dave F

| Hello | | Having a problem with bridging on 20mil pitch qfp, only on the lead groups where squeegee goes over width of apertures. Using MPM sp-200 semi-auto, chem-etch stencil, 9-10mil width opening | 100 durometer blade. Getting "tails" on deposi

Re: 20 mil qfp bridging

Electronics Forum | Fri Aug 13 13:47:52 EDT 1999 | Brian Wycoff

| | | | | Hello | | | | | | | | | | Having a problem with bridging on 20mil pitch qfp, only on the lead groups where squeegee goes over width of apertures. Using MPM sp-200 semi-auto, chem-etch stencil, 9-10mil width opening | | | | | 100 durometer

Re: 20 mil qfp bridging

Electronics Forum | Fri Aug 13 13:50:53 EDT 1999 | Brian Wycoff

| | | | | | Hello | | | | | | | | | | | | Having a problem with bridging on 20mil pitch qfp, only on the lead groups where squeegee goes over width of apertures. Using MPM sp-200 semi-auto, chem-etch stencil, 9-10mil width opening | | | | | | 100 du

The bent ones.......

Electronics Forum | Tue May 02 16:33:18 EDT 2000 | Joe

hi, I am looking for some guidelines which can tell me when gullwing and finepitch leads are too damamged to repair. Copper gets hard when bent and the electrical resistance increases. When a finepitch component gets dropped a lot of pins need staig

Re: The bent ones.......

Electronics Forum | Wed May 03 20:01:44 EDT 2000 | Dave F

Joe ... What is it with you and bent leads, bud??? One angle that you might take is taking to folk that reclaim components from stuffed, but obsolete boards. Try: Chip Pro 10390 E. Lakeview Drive #206 Scottsdale, AZ 85258 480-860-5790 Fax 8366 Pro

QFP w/ oxidized leads

Electronics Forum | Wed Mar 20 12:52:38 EST 2002 | PeteC

Thanks guys.

QFP w/ oxidized leads

Electronics Forum | Tue Mar 19 07:48:26 EST 2002 | PeteC

Have QFP at o.5mm pitch with leads too oxidized for the flux in the paste to de-oxidize(in stock for boo koo time). I saw three companies on the Internet that can "tin" (solder coat) the leads. Does anybody have any experience with having this done t


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