Electronics Forum | Tue Nov 21 13:38:10 EST 2006 | billwestiet
I'll also make the same reccomendation, I always make. Call the OEM. Vitronics tech support is pretty good, and they should help you out. I don't think the blowers turn on and off as suggested earlier, but I do think they have multiple speeds than
Electronics Forum | Mon Dec 18 04:03:30 EST 2006 | greg york
Good solvent wipe will normally show some discoloration of the same colour as resist, but not scientific enough as you cant gauge the amount coming off, ideally none. But is an indicator of the issue. I have been meaning to do a swab with an indicato
Electronics Forum | Wed Nov 29 01:46:10 EST 2006 | hanocete
Hi! to all, Here in our company, we sometimes received BGAs and ICs that were packed poorly(not sealed), and no MSL level written to it from our suppliers, now we subject the material for baking before using it. We use J-STD-033B table 4-1 as our cr
Electronics Forum | Thu Nov 30 10:38:39 EST 2006 | billwestiet
You are cooling too fast, and some flux and paste is worse than others... Can you control your cooling zones? Water Temp (higher)? Or Water Flow (less, effectively less cooling)? Changing water temp is prefferable over flow if you can do it. I h
Electronics Forum | Fri Dec 15 14:29:13 EST 2006 | MFG CAVEMAN
We are a medium sized CM with a HUGE product mix. Lot's of prototyping. As a result, we see a lot of cut tape on consignment kits and turnkey jobs where there's no confidence in repeat business. Purchasing is under instructions to buy full reals w
Electronics Forum | Wed Aug 22 14:25:22 EDT 2007 | russ
Go inform the owner of your company that you are spending hours of labor dealing with these parts instead of spending the extra 4 dollars it takes to buy an entire reel. When we deal with strips we make sure that an extra amount is ordered to apply
Electronics Forum | Thu Dec 28 09:49:18 EST 2006 | slthomas
Tough call without seeing the board, but here's my best guess. You don't say if the glue dot is greater in height or diameter in the locations where you have printing (silkscreen), but I would guess that you might get either, or both, depending on ne
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 | 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 | Tue Jan 16 18:18:46 EST 2007 | greg york
Sorry that answer never really gave you the reason and ways to resolve. Reason - most composite pallets are only good up to 180C so thermal excursions at 250 or even 270c lead free kill them. Try to stay on top of cleaning as well and some pallet mat
