Electronics Forum | Mon Jun 12 14:03:12 EDT 2000 | MikeF
Jason, First, check with the manufacturer of the flux you are using. They can tell you what board topside temperature range the flux is designed for. Some other info is needed for the residue part. Is it showing up on the same board, or different boa
Electronics Forum | Tue Jun 13 12:03:10 EDT 2000 | Chris May
Jason, If 225C is the topside temp of your board just prior to hitting the wave, I would say this is too high. Your flux suppliers data sheet should tell you an ideal topside temp for good flux activation, probably around 190C. According to the Bi
Electronics Forum | Mon Jun 12 06:45:10 EDT 2000 | kim ji tae
Hi! Thanks all who upgrade these pages. I have some questions. Is there any answer? I do double-sided reflow solderig, with 0.4% AG solder cream. with AU finished pcb. First I do reflow solder bottom side where 0.5pitch TQFP locates. Second I do re
Electronics Forum | Mon Jun 12 22:00:51 EDT 2000 | Dave F
Could be. What are your profiles? 2) Au finish fail => Could be, but that the connections can be made with hand soldering makes this a low probability cause, assuming the activity of the flux used in hand soldering is not significantly different fr
Electronics Forum | Fri Jun 09 17:34:08 EDT 2000 | Melanie Mulcahy
I need some information regarding the acceptability/unacceptability of using tented vias with LPI soldermask. Long story on all involved, but basically I have a board that I have had manufactured with no problems which has BGA/uBGA parts, tented via
Electronics Forum | Thu Jun 08 21:14:31 EDT 2000 | Thomas Ravener
You asked about info on a line. The only responses have been on a single machine. What type processes are involved? Are you doing a mixed technology application? UIC has probably one of the best technology application labs in the business. But all of
Electronics Forum | Fri Jun 16 17:30:04 EDT 2000 | Eutectic state
Go with Universal. We had Fuji equipment for years. That is all but phased out now and we only are buying Universal. You cannot beat their service. The chip shooters are great. The only cons that I have dealt with is the learning curve on the n
Electronics Forum | Wed Jun 07 12:11:42 EDT 2000 | Rex Breunsbach
First of all I would like to thank you for your candid comments on this subject. ECD listens to its customers and values their input. Yes, our experience shows the coupons have a 30 to 60 run life depending on application. This works out to between
Electronics Forum | Mon Jun 05 16:49:11 EDT 2000 | Chris
Is anyone having trouble with PSA (pressure sensitive adhesive) cover tape used with embossed plastic tape? I am placing 0402 components out of embossed plastic tape with PSA cover tape. The feeders gum up, the take up reels are impossible to remov
Electronics Forum | Wed Jun 14 20:05:51 EDT 2000 | Raeto Zryd
Hi Jason, Zero defect is the only acceptable quality!! U need to ask yourself how capable is your process and how well is you quality system set up. No point in setting goals unatainable or beeing forced upon by management if the root problems of th
