Electronics Forum | Wed Feb 26 03:43:40 EST 2003 | alwil
We use an alpha metal stencil cleaner and was curious to find out what types of solvents and cleaners were used out there. It takes about 350-400 litres of fluid. I would be interested if there is something water based we could use. What types of ste
Electronics Forum | Wed Feb 26 16:06:34 EST 2003 | slthomas
Something else I just thought of, and MikeK touched on it briefly, is what you'll be cleaning. If you need to be capable of removing both epoxy and solder paste, for instance, you need to look at chemistry and processes that will clean both, and the
Electronics Forum | Mon Mar 03 11:28:24 EST 2003 | MA/NY DDave
Hi Normally I wouldn't do it. There are too many proto express shops that supply good results and in 1-3 days. Yet if you need to, you can buy some equipment that is designed just for prototypes. And right now their are huge fire sales. YiEng, MA
Electronics Forum | Wed Feb 26 14:59:32 EST 2003 | Brent Robinson
To be honest with you, I'm not sure. Just started working here and they were using U Shaped aperatures on 0603 caps/resistors and getting dry pads. After checking out the programming, no matter how much I slow down the screen printer or what I do,
Electronics Forum | Wed Feb 26 21:44:52 EST 2003 | Paul Dansereau
I will be building a board, about 8 X 12 , .062" thick using a standard FR406 stackup. It has a variety of devices, including CCBGA , CBGA and PBGA's. Given the challenge of developing a reflow profile that will accomodate both ceramic and plastic BG
Electronics Forum | Wed Feb 26 22:22:00 EST 2003 | Grant Petty
Hi, The guys here have some boards that have been reworked however as we use no-clean paste we are getting the white residue after ultrasonic cleaning. We are using an alcohol based cleaner in the ultra sonic cleaner. Does anyone have any ideas, or
Electronics Forum | Thu Feb 27 03:26:13 EST 2003 | damianlai
Hi, I would appreciate some advice / recomendations regarding conditioning of PCB's before use. Our standard PCB's are double sided and rigid multilayer FR4. We are currently baking everything over 3 months old for 2 hours at 125 degrees C. Is thi
Electronics Forum | Thu Feb 27 09:40:19 EST 2003 | jseagle
Hi, I am looking for opinions on closed-loop inline washers. We use water-soluble paste and flux, most of our boards are double-sided, and our finest pitch is 16mil, but we will be doing BGA, uBGA, and possibly flip chip in the future. What would
Electronics Forum | Tue Mar 11 09:26:36 EST 2003 | jseagle
Dave, Not sure if I understand the question. We do not process No-Clean in our facility at the current time. We are a completely Water-Soluble with a 12 year old Hollis Polyclean In-Line washer. I need to scrap the piece of ****. That's another
Electronics Forum | Fri Feb 28 09:16:49 EST 2003 | davef
Never heard of Bareco wax. Check with your press supplier. They'll have the dirt on this carnuba oil stuff. I do question replacing ENIG with HASL, no other changes. HASL is going to fill that hole alot more than ENIG. Certainly it will displace
