Electronics Forum | Tue Sep 26 18:34:11 EDT 2006 | stepheniii
Hi, Maybe I am a little bit slow, but please > explain exactly what is your point here? The > RoHs directive is wrong, or what? So You slam > the door on the RoHs directive, just because You > don't get the whole picture or perhaps You do? Le
Electronics Forum | Thu Oct 19 12:00:55 EDT 2006 | sliebl
Can anyone tell me if they are aware of any pick and place machines that can use 'randomly placed' local fiducials? Now, let me explain... Our machines (Contact 3S, and 3AV machines) can use local fiducials in several ways. We can use a single center
Electronics Forum | Mon Nov 06 11:23:50 EST 2006 | realchunks
A slow profile should get you up to temp unless you have severe mass on your board. 8 zones is a lot oven to work with. There are no lead services that can run your board for you. Might be expensive, but use this cost to justify a real high temp
Electronics Forum | Mon Nov 06 17:11:23 EST 2006 | gregcr
Hi All, I have vendors and even customers telling me that to properly run RoHS compliant products I should have ovens with more zones than my Heller 1500's. I have been running RoHS compliant product with these with very good results. So what ar
Electronics Forum | Thu Nov 30 08:09:19 EST 2006 | INGE
Hi everybody, The matter is this: after reflow, on top side leads of chip components (resistor 0805)appear some empty balls of solder. In some cases this thing is only on the lead and the solder joint seems good, in other cases this empty ball is als
Electronics Forum | Wed Dec 06 23:54:24 EST 2006 | valuems
Think you will find every mpm is operating on dos base software, just in the last 2 years have they got software with windows base. The mouse is related to the version of software, and the old software requires only one model of mouse. Give up tryi
Electronics Forum | Sat Dec 23 01:00:38 EST 2006 | mika
Of Course you can. We have a customer specific board that has a stupid connector underneith, and we must manually glue this one onto it's postition before reflow on the secondary side first... And as you know, the customers is alwayw left... The funn
Electronics Forum | Thu Jan 04 10:27:47 EST 2007 | slthomas
1) determine the rate of cleaning frequency related defects your production can tolerate. 2) determine the frequency that nets you that defect rate, or lower, but also consider the cost of cleaning materials and throughput if you're cleaning very oft
Electronics Forum | Wed Feb 07 16:16:10 EST 2007 | mr
I have seen this before. Check: --Vibration of belt --Interference (part getting "brushed off" while reflowing bottom-side components --Some glues' cross-linking mechanism is impaired by the flux during migration in reflow, redering the glue useless
Electronics Forum | Wed Jan 10 10:16:11 EST 2007 | slthomas
Pretty labor intensive operation as has already been mentioned. Bang for your buck is about zilch unless you're dropping expensive stuff at alarming rates. If you're not doing it already I'd start logging missed picks/drops/rejections and figure out
