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
Electronics Forum | Mon Nov 12 17:12:40 EST 2001 | slthomas
Thanks, Dave. Three courtesy cheers for specifications written to reflect the capabilities of the part suppliers, even if they fail to meet the purchaser's (not unreasonable) process req'ts. In the meantime, I'm sure my stencil guy would be more
Electronics Forum | Mon Dec 20 17:34:17 EST 1999 | Dave F
Ron: Chris is correct that there is a bunch of fixture fabricators that make good products that will serve your purpose. Other fixture fabricators can be found in the archives. Problems with these fixtures are: 1 Out-rageously expensive 2 Very lo
Electronics Forum | Wed Feb 01 12:57:51 EST 2006 | wheels_in_the_well
There are several makes of stencil cleaning equipment. The previous post mentioned, Aqueous Tech (www.aqueoustech.com). Others of long standing high reputation are EMC Global (www.emcgti.com), Austin American Technology (www.aat-corp.com), and Tech
Electronics Forum | Wed Aug 10 17:02:32 EDT 2005 | Inds
wats the thickness of your board.. and the dimension.. I would not heat the board beyond 150deg C.. coz if the board is thick and large.. it will take a long time to reach that temp..and you will burn off your flux.causing poor solder joint. Ind
Electronics Forum | Sat Mar 06 06:15:14 EST 2004 | Bryan
Thanks Tommy. In fact I've tried many types of profile,but it didn't work.I'll try to make the peak temp. as low as 205C and dwell long as in some threads Dave said.I've tried baking the BGA and PCB before mounting also dindn't work.yes,I've heard th
Electronics Forum | Thu Mar 05 23:33:53 EST 1998 | Ron Costa
| | Hello everyone! | | Does any know anything about bare board size variations? | | Is there a spec. or tolerance? | | I'm running small lots of boards and during the screen printing process | | I find that I cannot paste each board perfectly.I've t
Electronics Forum | Fri Mar 06 10:30:46 EST 1998 | Ron Costa
| | | Hello everyone! | | | Does any know anything about bare board size variations? | | | Is there a spec. or tolerance? | | | I'm running small lots of boards and during the screen printing process | | | I find that I cannot paste each board perfec
Electronics Forum | Fri Aug 19 21:12:58 EDT 2005 | grantp
Hi, We are not based in the US at all, but the US PCB manufacturers are the only ones that combine good customer service, the ability to product rapid prototypes without huge setup costs, and meet deadlines. As the global electronics market has chan
Electronics Forum | Tue Jan 12 10:18:36 EST 1999 | Russ Steiner
| Any idea what the "industry standard" is for fall out on assembled PCB's? I realize that the controls put in place in your processes will effect your overall quality. But I'm trying for a general answer. On pre-tested assemblies, should you exp
