Electronics Forum: rework (Page 262 of 293)

Re: BGA solder joints versus mechanical stresses

Electronics Forum | Thu Sep 02 16:06:33 EDT 1999 | Earl Moon

Has anyone done or seen any studies done documenting what may be the affect of hardware such as screws in the parimeter vicinity of BGAs on a circuit board? What I'm really after is anything describing how close a screw/washer/nut combination

Re: BGA solder joints versus mechanical stresses

Electronics Forum | Thu Sep 02 16:37:23 EDT 1999 | R Scheller

Has anyone done or seen any studies done documenting what may be the affect of hardware such as screws in the parimeter vicinity of BGAs on a circuit board? What I'm really after is anything describing how close a screw/washer/nut combin

Re: BGA open

Electronics Forum | Thu Sep 02 12:01:49 EDT 1999 | stefano bolleri

Could someone shares their experience on the causes of 'Open' in the BGA after reflow. Are you talking about "primary" process or rework? Are you sure you have not clogged apertures on your stencil? What is the pitch of the balls? My experie

Re: Achieving High Yields with CSP

Electronics Forum | Thu Aug 26 14:45:09 EDT 1999 | Earl Moon

What are the key steps to achieving high yield with CSP ??? (We are trying qualify vendors for volume fab/assembly of some products which use several CSP devices on each side of the board. (Some with 0.5mm ball pitch)) Looking throu

Re: Micropax continued

Electronics Forum | Wed Aug 25 10:49:42 EDT 1999 | Boca

Again, I really appreciate the valuable input you all provided. Got my Air-Vac SRM4 machine Friday afternoon. Stored it safely in my cube over the week-end for safe keeping. Tried to find 220V single phase next to air with no luck yesterday. Elec

Re: Help for CSP Prototyping

Electronics Forum | Sat Aug 21 17:10:12 EDT 1999 | K. Vikas Sharma

Want to know the Tools/ Process required to get started with CSP prototyping and R & D. Anyone working on this , please help out. Depending on the type, size, and pitch - just like BGA's, they aren't tough. Our 1mm types went through p

Re: Help for CSP Prototyping

Electronics Forum | Sun Aug 22 08:21:39 EDT 1999 | Earl Moon

Want to know the Tools/ Process required to get started with CSP prototyping and R & D. Anyone working on this , please help out. Depending on the type, size, and pitch - just like BGA's, they aren't tough. Our 1mm types went t

Serious stuff

Electronics Forum | Wed Aug 18 14:33:40 EDT 1999 | Earl Moon

OK folks, let's get real serious. Well, I shot off my big mouth yesterday during a scheduling meeting concerning DFM and rework. Again, what an irony, oxymoron, or that other thing. Anyway, I said it would take another 4 weeks to develop a process

Re: Serious stuff

Electronics Forum | Wed Aug 18 15:09:48 EDT 1999 | John Thorup

OK folks, let's get real serious. Well, I shot off my big mouth yesterday during a scheduling meeting concerning DFM and rework. Again, what an irony, oxymoron, or that other thing. Anyway, I said it would take another 4 weeks to develop

Re: Serious stuff

Electronics Forum | Wed Aug 18 21:20:45 EDT 1999 | Dave F

OK folks, let's get real serious. Well, I shot off my big mouth yesterday during a scheduling meeting concerning DFM and rework. Again, what an irony, oxymoron, or that other thing. Anyway, I said it would take another 4 weeks to develop


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