Electronics Forum | Fri May 02 16:20:35 EDT 2008 | rwyman
We've never, to my knowledge, sent out Pb-free BGAs to be reballed for use on an SnPb assembly. In fact, we developed an in-house reballing process and we haven't felt the need to do that either (for salvaging an occasional reworked part, maybe).
Electronics Forum | Thu Aug 14 18:04:36 EDT 2008 | smt_guy
I have made couple of investigations with our oven. I set-up 5 product profiles and run a thermal profile measurement and record them. Then I set-up one more product profile and rename that as Validation Profile then measured the thermal profile. A
Electronics Forum | Mon Aug 18 13:46:09 EDT 2008 | realchunks
Tolerance stack up has really become an interesting issue with boards coming from China. What has usually been taken for granted has to be looked into with a fine tooth comb. Most board houses of the past would reject this - but China figures "If i
Electronics Forum | Mon Dec 15 15:34:17 EST 2008 | dyoungquist
Sorry it has taken me so long to respond. I got pulled off onto other projects and was not able to work on the solution to the problen until recently. The solution we have come up with is to change from no-clean flux based solder paste to water sol
Electronics Forum | Thu Aug 28 16:18:55 EDT 2008 | realchunks
So just send a board to your company and that's root cause analysis? LOL... Ok sure. I guess I'm too much of an engineer and like to get to root cause by eliminating all the question marks and double checking my findings. Part of THAT kind enginee
Electronics Forum | Mon Sep 08 08:59:45 EDT 2008 | davef
You're correct: * Sealed relays should not be cracked or have moisture intrusion. * Hand soldering relays is going to be expensive. [Using a mini-solder pot for this might reduce some of the burden.] The good part is that the problem is gross enough
Electronics Forum | Thu Sep 18 15:26:04 EDT 2008 | ismir
Dear Hegemon, I'm very grateful for your help. There is one more thing that I'd like to discuss with you. I'd like to know if there is any "verification board" or something like that to check if you really did a good job. At the company where I wo
Electronics Forum | Fri Oct 10 05:04:26 EDT 2008 | bing007
We are using Mulicore MF101 flux and a Vitronics selective soldering machine on a lead-fee assembly and are having trouble with nozzles blocking even when the nozzle aperture is increased. Has anyone come across this problem before using fluxes with
Electronics Forum | Tue Oct 21 14:15:05 EDT 2008 | ccouture
Mariss, I would run a power analyser on your oven to see the real power consumption during warm-up and during production. Then you would be better able to decide how much money to invest in a humidity controled cabinet big enough to contain your dail
Electronics Forum | Thu Oct 16 07:38:35 EDT 2008 | rway
There are seconds when it comes to components. Find out what her sources are and if she is purchasing from a reputable vendor. She may be doing what all purchasing agents do, and that is finding the best deal out there. Especially if her review de
