Electronics Forum | Sat Oct 28 10:40:54 EDT 2006 | grantp
Hi, I totally agree. If I purchased a machine, and a company wanted me to pay some kind of fee just to be able to purchase parts, I would go nuts. What a terrible policy. I think, and this is becoming more common, that companies are becoming so sel
Electronics Forum | Tue Oct 24 10:03:24 EDT 2006 | billyd
All - I'm hoping I can get a little feedback here on my package libraries for my Mydata machines. I have four tied to a server right now, and I have several operators that apparently like to make packages, so I have some called 0805-05-A-MY-9-2 and t
Electronics Forum | Mon Nov 06 22:01:44 EST 2006 | realchunks
Why a clean room? Or do you mean an environmental room to control temp and RH? Any way, to answer you question, your wave and oven can care less about RH. Just don't keep them at 100% RH. Static can easily be handled with lower RH and proper grou
Electronics Forum | Tue Nov 14 04:52:57 EST 2006 | Loco
To make it even more compicated, you have CTE before Tg and after Tg, altough the after Tg is way more important, because the expantion ratio will be much bigger, a pcb supplier will usually give the before Tg value. To come back to the delamination
Electronics Forum | Mon Nov 27 16:52:18 EST 2006 | greg york
Hi Bill Mostly in the UK, but originally saw the problem when I helped on one install in Malta on a chinese mc set at 5 degrees and had nightmare bridging. changed the angle to 6.5 ish and results were instantly better actually better than what they
Electronics Forum | Wed Nov 29 10:10:50 EST 2006 | M. Sanders
I'm sorry, Dave - I didn't make myself very clear. Yes, this space (not really a "gap") is filled with solid solder. For instance, if you place a gull-wing component in solder paste, after reflow, there will probably be a thin film of solidied solder
Electronics Forum | Thu Dec 07 12:29:57 EST 2006 | fastek
It makes sense if you think about it. Siemens was a dead company ready to fold up their tents back in the 80's and early 90's. To their credit they stuck to their platform...got somewhat lucky and the market sort of came to them as the wave of users
Electronics Forum | Mon Dec 04 11:46:41 EST 2006 | samir
SMTNetters, I have a product coming down the pipeline that we'd like to make pure double sided reflow, it'll be RoHS product, and the hope is... we'll be able to solder the thru-hole stuff by screen printing solder paste and reflow soldering. Anybo
Electronics Forum | Wed Dec 06 07:24:22 EST 2006 | davef
Successful solder paste overprint is a function of the solder paste rheology, solder mask and through hole component stand off. * Solder mask with a high surface energy will permit a larger overprint than a solder mask with a lower surface energy. In
Electronics Forum | Thu Dec 07 19:20:28 EST 2006 | ganoi
Most likely there is movement during reflow. How about conduction oven over convection oven for reflow? This is a small PCB with the LED sitting on a Flex-Rigid extension from the PCB. I was thinking if the stencil aperature for the LED was to be cu
