Electronics Forum | Thu Dec 15 11:06:05 EST 2005 | Samir Nagaheenanajar
You might wanna try a small reduction in your stencil aperture. For example, for a 30-mil pad go 26-mil square aperture with 8 to 10-mil radius on your corners. Also, look at your designs. Is there enough resist between your pad and ball? Another
Electronics Forum | Thu Dec 22 13:16:07 EST 2005 | Cmiller
You may want to take a quick look at the tier one equipment suppliers. Universal and Fuji have some very competitive equipment, not sure about Panasonic and Siemens but they have to be trying to compete as well. We are low volume and never thought we
Electronics Forum | Thu Dec 22 04:34:47 EST 2005 | rlackey
11,000 parts? Easy life. We have 66,000 lines in stock & about 500,000 on the system. We've added extra fields on the database for every part number with ROHS status, MSL, PBT, & end termination info added. We've also had to create duplicate part
Electronics Forum | Thu Dec 22 15:36:03 EST 2005 | CC
In general two step temperature reflow process requires minimum 40 deg C delta to be sucessful. We are not using vapor phase soldering but we have similar situation when we change to SAC lead free solder for PCB component population and secondary swe
Electronics Forum | Thu Dec 29 05:56:37 EST 2005 | bobpan
Dont quote me on this because its been a while but i believe thats a grounding issue on the quad-align card itself. The card is located in the rear right bottom of the machine. Try adding a ground wire to the cage that the card is mounted inside. Als
Electronics Forum | Tue Jan 03 09:23:31 EST 2006 | Amol Kane
Hi all, Firstly, Wishing everyone a happy new year and a successful transition to RoHS (exempt entities please disregard the later part :-)) I am looking for a formal training institute/organization to train my operating personnel for lead-free hand
Electronics Forum | Thu Jan 12 01:07:34 EST 2006 | pavel_murtishev
Good morning Mark, CAM (Computer Aided Manufacturing) products are designed to solve such tasks. You can try CAM350 for example. CAM350 understands different ASCII exported data from different CAD systems. CAD ASCII export contains all necessary inf
Electronics Forum | Mon Jan 09 17:35:32 EST 2006 | russ
How are people getting BGAs reworked on boards that are 15"x15" at .06" thick? The BGAs are pretty much in the center of these assemblies. We have just received these and I cannot keep from warping/bowing as much as 1/2" at the heated area. Our bot
Electronics Forum | Mon Jan 09 19:09:45 EST 2006 | Mike
Basically the same exact way as a much smaller board. The only difference is the profile. Most of our boards are 0.063" thick. Looks like you found your problem. If the edges of the board are cold relative to the rework site (high difference in t
Electronics Forum | Thu Jan 12 13:39:14 EST 2006 | sarar
If you want to try and reduce the dross, there is a really interesting product out there that you might want to examine called MS2 - it's developed by P Kay metals out in LA, and is known to completely eliminate dross in lead free processes. I'm not