Electronics Forum | Mon Oct 20 15:33:18 EDT 2003 | severs
APS themselves is a good source for learning how to use this oven. Have you talked to them?
Electronics Forum | Tue Oct 21 10:59:49 EDT 2003 | AXL
Hey Russ I hate to say it but you switched from Indium for no reason! If you were getting residue then your oven profile was off! Your flux should have burned off if it was done correctly, that's the purpose of "no-clean".
Electronics Forum | Mon Oct 13 13:49:29 EDT 2003 | mrmaint
Does anyone know of a standard stencil thickness for BGA'S. We currently use 4 to 5 mil stencils depending on component mix. Is an aperature reduction required for BGA'S. If so what percentage. Any help would be greatly appreciated. Thanks MRMAINT
Electronics Forum | Mon Oct 13 19:04:47 EDT 2003 | davef
Aperture size should vary with the component [pitch]. That size should be the same a the pad size. So, generally pinching is not required. Indium discusses BGA apertures on their site [ http://www.indium.com ]
Electronics Forum | Mon Oct 13 17:05:35 EDT 2003 | MA/NY DDave
Hi The answer is yes, These moles, as you called them, are designed more as process control test instruments than true representations of the products that you will process. By The Way, Most don't know this so I congratulate you. Many get schnoke
Electronics Forum | Tue Oct 14 10:51:50 EDT 2003 | cyber_wolf
Hello all, We are considering switching from FujiCam to Flexa. Does anyone have any comment on this? Advantages/Disadvantages? Thanks
Electronics Forum | Wed Oct 15 14:59:04 EDT 2003 | William Guatemala
I strongly reconmend to switch over to Flexa. It's much easier and reliable than FujiCam and UniCam. Except the PCB's have to be very roboust to handle all the security fixtures. W. G
Electronics Forum | Wed Oct 15 21:42:41 EDT 2003 | adlsmt
I have only used this on Mov assy's, never on boards. If using no-clean does the joint appearance enhance AOI effectivnes? Anyone tried it? The cost would be worth it.
Electronics Forum | Thu Oct 16 18:22:40 EDT 2003 | Gabriele
Russ, you are right, I've seen briging on 16 mils pitch on OSP (ref under N2),to avoid it needs more care in paste volume. Easier was by 63/37 (Clean) and N2 (on OSP double sided PBA). Regards Gabe
Electronics Forum | Wed Oct 15 12:32:19 EDT 2003 | Gregg
We are looking at a design that has an smt led emiter and a corresponding smt detector. After reviewing the tolerance stackup, we need a reflowed placement accuracy of +/-0.25mm(+/-0.010") for each component. Any thoughts/opinions?
