Electronics Forum | Tue Oct 24 09:52:35 EDT 2006 | SWAG
We are having the exact same problem! We do about 6 or so ROHS SMT builds. 5 are fine now but we had problems with most initially and 1 is trouble still. All boards are same material, same PCB manufacturer. Initially, when the delam. problem occu
Electronics Forum | Mon Dec 08 17:06:59 EST 2008 | boardhouse
Hi MGL, Couple things to ask, have the boards recently been changed to Rohs builds? STD FR4 to High TD Laminate. Check the stack-up the board houses are using. Just about all Rohs laminate has Resin starvation issues when used in single ply co
Electronics Forum | Mon Nov 09 07:21:02 EST 2009 | CL
Good Morning, I have seen many posts regarding BGA voiding being excessive and what can be done to better the condition. I have a customer that has an assembly that we have had a diufficult time with. We have spent a lot of time debugging the proces
Electronics Forum | Wed Dec 21 17:11:47 EST 2005 | Mike Dolbow www.atotalgps.com
Has any one considered the melting eutectic of the plated part verses the eutectic of the paste it self. Inter metallic solids can form when mixing metals. Thus this causes solder joint reliability. Also a lot of vendors are putting out pure tin prod
Electronics Forum | Thu Apr 19 08:50:38 EDT 2007 | rgduval
Welcome to RoHS. Or, at least, to the version of RoHS that I've had to deal with since I started with my current company. Blowholes and pinholes seem to be common in PB-free manufacturing. At least, they have for me here. I also note that IPC has
Electronics Forum | Thu Jun 28 09:07:51 EDT 2007 | mika
Laser cut 0.13mm stencil thicknes works great for us. BTW, are we talking RoHS solder paste? We do reduce the stencil apertures to 88 % of the pads when we go for the RoHS solder paste. Otherwise we go fo 96% reduction in general with some excemption
Electronics Forum | Wed Apr 07 08:28:41 EDT 2004 | Dougie
Hi, We are Scottish manufacturing company considering a move to Immersion Silver finished PWB's from HASL. The driver behind it being the RoHS and WEEE legislation in Europe at present. My question is... We plan on using a Sn/Cu/Ni solder bar in o
Electronics Forum | Wed Apr 07 08:30:22 EDT 2004 | Dougie
Hi, We are Scottish manufacturing company considering a move to Immersion Silver finished PWB's from HASL. The driver behind it being the RoHS and WEEE legislation in Europe at present. My question is... We plan on using a Sn/Cu/Ni solder bar in o
Electronics Forum | Wed Dec 15 15:24:22 EST 2004 | russ
I think they need to go after the real lead contaminants. PCB/electronic waste accounts for .01% of lead waste based upon my last info I rec'd. So this lead free agenda is really going to help alot isn't it. I believe that most of the lead contami
Electronics Forum | Fri Dec 31 10:22:54 EST 2004 | gpaelmo
I agree that something has to be done with the lead waste but I believe that a recycling program is a better alternative to lead-free. Isn't silver more toxic? How about the venting of alternate alloy fumes, let alone the effects on operators. I say
