Electronics Forum | Fri Apr 08 04:48:34 EDT 2005 | vinitverma
7mils/inch is 0.7% and the IPC-A-610 calls for 0.75% (for SMT), so both are approx. the same. So there are no two methods in what you described. The 7mil/inch is also a percentage. Regards Vinit
Electronics Forum | Sat Jun 25 10:04:08 EDT 2005 | ktron
Hi MSK, Stencil thickness: 5mils with laser cut Smallest pitch: 20mils Underscreen cleaning frequency: 10 bds per cleaning Note: We have decreased the cleaning frequency from 10 boards to 3 bds to reduce solder bridging after printing Regards,
Electronics Forum | Thu Jul 14 16:08:07 EDT 2005 | russ
Stencil thickness is related to PCB design and is not related to paste type. If you release with a 8 mil stencil then use an 8 mil stencil. Of course there are pastes that release bteer than other and what not but use area and aspect ratios to dete
Electronics Forum | Fri Sep 23 04:06:43 EDT 2005 | Rob
Make sure you have the 1 mil & 4 mil cameras so you can cover virtually any component.
Electronics Forum | Mon Mar 13 04:18:42 EST 2006 | pedestrian
0.2mm gap between parts is small and easy to solder short. I prefer 5mils or 4mils.
Electronics Forum | Thu May 18 11:16:16 EDT 2006 | russ
Go 5 or 6 mil thick with stencil, i am not familiar with that pitch but I would recoomnd a 5mil. Was the thickness in this post before and i missed it? Russ
Electronics Forum | Mon Jul 31 13:04:01 EDT 2006 | russ
Never changed anytihgn when we switched to Immersion silver. Have run approximatelky 10,000 16mil pitch devices to date with immersion Silver PCB, stainless, chempolished 5 mil stencil, and pbfree paste (OM338). Russ
Electronics Forum | Fri Oct 20 10:15:13 EDT 2006 | wrongway
mid chip solder balls we had that trouble for awhile we went from a 8 mil thick stencil to 6 mil stencil and did some home plate style of cut outs in the stencil for the 1206 caps and resistors it seemed to fix our mid chip solder balls
Electronics Forum | Wed Nov 29 17:05:15 EST 2006 | slthomas
I have used a 10% area reduction with home plates on 6 mil stencils with good success. If you're using 5 mil stencils you might go with 0 or 5% reduction.
Electronics Forum | Mon Jun 18 02:15:20 EDT 2007 | pavel_murtishev
Good morning, 5mil stencil or less would be appropriate. We deal with 0402's daily and 5mil works. BR, Pavel
