Electronics Forum | Tue Aug 30 12:08:09 EDT 2005 | slthomas
The answer for us at my previous employer was water soluble flux. Wash the board, no residue. If you're not set up to wash (needing a washer, DI water source, waste treatment, ventilation, etc.) it can be expensive and space consuming. Do some resea
Electronics Forum | Fri Sep 09 07:55:08 EDT 2005 | davef
This pattern indicates flex cracking due to excessive bending of the board or fixture after soldering. Ceramic is strong in compression, but weak in tension. When bending causes damaged parts, look at: * Board flexes, ceramic is strong in compressio
Electronics Forum | Wed Aug 31 00:50:59 EDT 2005 | grantp
Hi, We have a new part we need to mount, and it's a .5 mm pitch BGA with .3 mm diameter pads. That's a lot smaller than we have done before, and we currently use 1 mm pitch BGA's with .5 pads. Has anyone does .5 mm pitch BGA's and what needs to be
Electronics Forum | Wed Aug 31 09:06:11 EDT 2005 | PWH
Agree with Siverts. We do a build that has 0.3mm pad diamter BGA (0.8mm pitch - distance from pad center to pad center) and 0.5mm dia. BGA balls. Stencil specs. are: 5 mil. thickness, square BGA pad aps. (1:1, 0.3mm square aps), laser cut. Seems
Electronics Forum | Wed Aug 31 11:02:28 EDT 2005 | Jason Fullerton
We are using one BGA that has 7 mil bumps on a 20 mil pitch. We use the manufacturer's recommended pad and aperature layout, which is an 11.8 mil square overprint on a 6 mil land. At 11.8 square, you need to use a 4 mil laser cut or a 5 mil e-form st
Electronics Forum | Fri Sep 02 14:15:44 EDT 2005 | Mika
Check the dimensions of the components in question with a caliper and put the correct numbers in Your part data. Check that the correct nozzle is being used. Also make sure that you have the right pcb height in Your program. This is somewhat criti
Electronics Forum | Wed Sep 28 01:32:15 EDT 2005 | Mika
Try vision type 12 for capacitors, this will give you much better acceptance in the vision inspection, since those are slightly rounded. Resistors works normally fine with vision type 10. If you have a component that is very hard to get pass the visi
Electronics Forum | Thu Sep 29 05:37:56 EDT 2005 | dougs
for 0402's you should be able to run the turret at full speed, if you need to slow it down it means that your machine isn't set up properly. use the vision number that the manual tells you and make sure your feeders are properly calibrated, poorly c
Electronics Forum | Thu Sep 01 18:27:28 EDT 2005 | Board House
Hi I currently Manufacture product for Dataradio Inc. in Quebec. and would be interested in quoting your product. We are a Multi-layer facility in Minnesota, we currenty manufacture layer counts between 2 & 18 layers. Line widths and Spacing down t
Electronics Forum | Fri Sep 09 17:41:58 EDT 2005 | Wild Bill
Reflow and wave flow solders have to be changed more often because of contamination. Pb free PCB's don't solder as well so you will likely have to find a new process or supplier. The higher temperatures heat soak the components so they all need to be
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