Electronics Forum: under stencil (Page 3 of 43)

Ultrasonic stencil cleaners

Electronics Forum | Mon Oct 22 13:21:12 EDT 2001 | Michael Konrad

Eric, The Kolb RB6D (and the RB5D) are not ultrasonic cleaners. They are high pressure spray cleaners. I would not recommend high pressure spray cleaners for misprinted assemblies with previously placed components (unless you don�t mind solder pas

mirco bga stencil opening

Electronics Forum | Thu Sep 12 09:15:29 EDT 2002 | mhoughton

I have printed and placed similar devices in high volume with exactly this spec for a couple of years with no problems, are you using laser cut stencils and what type of solder paste are you using? and what is the end use of the product as it may nee

Inspecting a new stencil

Electronics Forum | Fri Feb 15 07:19:22 EST 2008 | floydf

Currently when we get a new screen, we inspect it by holding a pcb or artwork under it and confirming that there are pads underneath all of the holes. The flaw with this approach is that if there are pads on the board with no corresponding hole in th

Re: stencil epoxy debonding

Electronics Forum | Fri Apr 28 21:33:01 EDT 2000 | JP

I had a similar problem. We wold begin to notice the debonding within hours after recieving the stencils. As it turned out, our stencil vendor, located in CA, was shipping the stencil to our facility, located in ND, before the epoxy was fully cured

mirco bga stencil opening

Electronics Forum | Thu Sep 12 11:26:11 EDT 2002 | scottefiske

CK, If joints have been validated prior to ICT (under BGA Scope), more often than not repeatable joint fractures are due to undo stress being placed on the component during ICT test. Verify ICT probes and fixture. If after proving out fixture/pin com

Nordic aQFN73 stencil design

Electronics Forum | Mon Apr 09 12:52:00 EDT 2018 | slthomas

We are about to do a second iteration of something we struggled mightily with last time and I'm hoping to at least make a step in the right direction. There are 12 of these parts on the board and virtually all of them required removal and replacemen

Solvent for a stencil printer

Electronics Forum | Fri Feb 13 18:08:06 EST 2004 | bman

We have recently aquired an MPM SPM stencil printer with an under stencil wiper. I have a list of approved solvents from MPM, but before I go and buy one I thought I would see what the fine people of SMTnet are using for their wiper solvent needs.

Re: Mechanical stencil foil tensioning

Electronics Forum | Mon Mar 01 17:54:56 EST 1999 | MMurphy

| Has anyone used the mechanical stencil foil tensioning system from certain company that eliminates using stencil frames and epoxy & mesh? Any comments on whether it's worth looking into? We go through product revisions like we go through clean so

Re: Applying chipbonder adhesives with a stencil

Electronics Forum | Tue Oct 06 09:06:35 EDT 1998 | MMurphy

| I am looking for anyone out there that has had experience with stenciling with chipbonder adhesives. I need information on material and stencil design. Go to the Stencil Design Guidelines page under the Technical Information section of the alphas

Re: screen printer and stencil printer

Electronics Forum | Wed Aug 18 21:10:23 EDT 1999 | se

| | | Hi, | | | I'd like to ask some tips about the merits and shortcomings o | | | of both screen printer and stencil printer. For small quantity and highly mixed usage, which type of printer is suitable to our | | | application? | | | The board


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