Electronics Forum | Wed Jan 03 10:34:18 EST 2007 | dphilbrick
Your failure rate should be as good or better than any other leaded part on your board. Have you done a reflow profile on this board. We typically sacrifice a board and drill a hole from the bottom and then imbed a probe under the part to get the tem
Electronics Forum | Wed Jan 03 10:41:47 EST 2007 | Rob
Consider this: The inner balls will be at a lower temperture than the outer balls in reflow, so if you cannot inpsect them then that may be where your problem lies. Are you reworking with a specialist machine that is directing the right amount of h
Electronics Forum | Wed Jan 03 11:14:26 EST 2007 | realchunks
What is your biggest failure mode? You root cause problem could be anything from poor ICT fixture to bad incoming inspection. Generally, BGA's are a high yield producing component. Just cause they're neat-o doesn't make em' bad. As for 85% yiel
Electronics Forum | Wed Jan 03 11:34:41 EST 2007 | SWAG
We have a SMT build that has been trouble from day 1. This board is about 2" x 2" and is panelized. The PCB is unusually thick (0.100"). The problem we always have (no matter if it's leaded or no-lead) is that the solder likes to wick up the heal
Electronics Forum | Fri Jan 05 11:41:40 EST 2007 | pms
Rob, I feel your pain brother...... The problem is that the old Mydata system is considered a "slow scan" system. Can't just use any monitor. We had to go with a replacement monitor from a company called Vartech Systems Inc. (www.vartechsystems.com
Electronics Forum | Thu Jan 04 02:25:12 EST 2007 | Loco
Sorry Dave? There is a seperate table safely hidden away in the D version, but i dont know if it is something new. chapter 7 THT - 7.5.5 Supported holes - solder has a table specifically for PIP, table 7-7 Plated trough holes with component leads -
Electronics Forum | Thu Jan 11 14:27:30 EST 2007 | gregcr
I worked for a similar company. They had 4 GSM's. Most all of the GSM's software have a fairly straight forward way of importing data, it is just a matter of formating it correctly. I can't imaging using calipers to make a GSM placement program if
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 | Fri Jan 05 13:15:59 EST 2007 | jhaviland
Depends on your company's IT policies. I have seen some companies where IT will not touch a production PC since it was not a standard IT issue PC, I have also seen some companies IT department do normal backups of the machines. (personally) whoever c
Electronics Forum | Fri Jan 05 15:10:15 EST 2007 | Bob R.
How about, "Who is the person who'll be called in to spend the weekend getting the machine back up and running after a crash? If it's your home phone number on the maintenance supervisor's speed dial then it's in your best interest to have a back up
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