Electronics Forum | Fri Mar 26 15:17:30 EDT 2010 | jooh
Thanks for your replies! So what I understand is that ICT in reality is "only" a production process safety net, but it's a net that in most practical cases is needed. What ICT can not catch is (all) bad solder joints. What are the methods to find t
Electronics Forum | Wed Mar 24 10:28:51 EDT 2010 | Sean
Hi all, Anyone used to come across solder void underneath mosfet as shown in the attached file? Will this pose any reliability issue, such as get burnt during functional test? How to over come this problem? As far as I know there is no acceptabl
Electronics Forum | Wed Mar 24 11:09:44 EDT 2010 | rajeshwara
Hello Sir I faced the same problem for QFP in DTH product in India. IPC stated that void should not be more than 25% of solder joint. But this type of void definatly create problem during functional test. Please check the folloeing point... 1.Check t
Electronics Forum | Fri Mar 26 06:58:06 EDT 2010 | ristikas
Hello, We have here very oftenly one error in our MPM Accuflex. I dont know who to ask about that errors... The error is „The transfer light peam interlock has been broken. Remove the obstacle from the path of the beam.“ I checked the sensors and
Electronics Forum | Mon Mar 29 14:39:07 EDT 2010 | cab
I am in the market for a solder paste/flux printer. Presco will do the job , but used cost is $10K. Our pitch is 50 mil on PBGA, so requirement is not so demanding. I found an Innovative Machine model MP-200 for less than $5K. Is anyone familiar
Electronics Forum | Tue Mar 30 12:45:54 EDT 2010 | rodrigo
We seemed to have a serious gap of information in this area. The technician found out about this MM, MN, SM stuff and we're reading and learning about them. We didn't use MM or SM for anything. I guess there is a price to pay for not having the prope
Electronics Forum | Mon Mar 29 21:19:38 EDT 2010 | mbclemens60
I have a customer that wants 5000 hrs to red rust. The steel is plated with chloride zinc (barrel plated) and a black chromate. They say a company in Taiwan has the technology, but can not deliver in a production setting. Does anyone know of a cost e
Electronics Forum | Tue Mar 30 15:29:39 EDT 2010 | davef
5000 hours, yeow!!! Salt spray testing "periods range from a few hours (e.g. 8 or 24 hours of phosphated steel) to more than a month (e.g. 720 hours of zinc-nickel coatings, 1000 hours of certain zinc flake coatings)." Look here: http://www.ancatt.c
Electronics Forum | Tue Mar 30 08:53:39 EDT 2010 | Sibbe
Hello, We are having some difficulties placing the luxeon rebel LED's. It doesn't matter what nozzle's we use, we cant run our P&P machine's on full speed without the rebel's dropping on the PCB in stead of being placed accuratly. Therefore I would
Electronics Forum | Tue Mar 30 17:52:15 EDT 2010 | cusackmusic
They are very finiky. If you have good solder paste, and a slight down pressure, to make sure the LED is "stuck" to the board, you should be able to place it. Pick it up on the center of the flat, NOT the lens. Even with the vacuum turned off, t
