Electronics Forum | Tue Jun 02 20:32:19 EDT 2009 | isd_jwendell
I used a batch oven for a couple of years. They will do the job, just not as good as a conveyor oven. I then switched to a small conveyor oven with 3 heated zones (early Mistral 260). I liked how well it performed so much that I purchased a new one (
Electronics Forum | Thu May 07 17:50:41 EDT 2009 | ecad
Hi, I'm a newbie here but I've lurked about this forum in the past! I'm an experienced PCB Designer I've found myself out of work due to the economy so I'm attempting to start out as a freelancer, I've found that more than a few of the smaller R&D fi
Electronics Forum | Wed May 27 14:29:25 EDT 2009 | jax
Universal use to sell a a device, machine mountable, that could place this connector. I am not sure if they still sell it... It has been 3-4 years since I saw it in action. The upgrade would force the boards stops to remain in the Up position while
Electronics Forum | Fri May 29 15:03:46 EDT 2009 | rway
We have recently begun using X5R dielectric capacitors. Although they have a better temperature coefficient over Y5V, they age much faster (5-7% logarithmically per decade). I assume the reason for using the X5R was the availability of the capacita
Electronics Forum | Tue Jun 16 14:46:25 EDT 2009 | grantp
Hi, If your using NXT to place these BGA's then you must be doing large runs. BGA's are the most easy part to place, and don't worry about them. Just stencil paste down for them as any other component. But we use 1:1 reduction on our stencil, so we
Electronics Forum | Sat Jun 06 15:11:17 EDT 2009 | ysutariya
Was this a lead-free capable material that fits into IPC 4101/126 or /129, like an Isola 370HR? I would not be surprised because from the picture I think I can see resin underneath the lifted copper, which is an interlaminate separate. This is a
Electronics Forum | Fri Jun 19 07:50:26 EDT 2009 | stepheniii
I worked for a company that had an industrial nurse come in to discusss lead with us. Short version; "There is nothing in the plant that will even come close to vapourizing lead" and "don't eat it". She said it's normal for everyone to ingest some
Electronics Forum | Wed Jun 24 18:44:14 EDT 2009 | mark_h
Hi Everyone My company has done loads of 0402 placements but are now required to start looking at 0201 and micro BGA placements. I’ve done loads of research and I’m happy with stencil design, area ratio, oven profile, machine requirements and paste r
Electronics Forum | Tue Jul 07 05:55:34 EDT 2009 | kpm135
I agree with your assessment of the two pins with irregular solder. The head-in-pillow or broken joint are both probable events for your defect. At this point in the process it will probably be difficult to pinpoint the exact cause. If it was a broke
Electronics Forum | Tue Jul 07 15:02:48 EDT 2009 | snsmt
Hello everyone, I have a question regarding rework. How do you guys rework QFPs (lead free)? The only method that we are currently doing is using a heat gun. We are heating up the bottom of the PCB (approx. 2") away from the bottom of the