Electronics Forum | Thu Sep 09 14:40:33 EDT 1999 | Doug Philbrick
| | My company is looking to perform "real time" statistical process control on our current SMT operations. I have identified the critical processes for SPC but have not had much luck in finding a system(s) that can monitor the required processes for
Electronics Forum | Wed Sep 08 13:36:27 EDT 1999 | Wolfgang Busko
| Hello: | We are using a Heller 1500S reflow oven to solder surface mount parts. Just within the last two weeks, the larger I.C.'s are moving while going through the oven. The parts are checked for placement before putting into the oven. When
Electronics Forum | Mon Sep 06 22:35:59 EDT 1999 | KEVIN SIMPSON
| I have a zevatech 570 and 560 my boss want to place bga.s with these machines, Ive told him he needs to ugrade to newer machines. Zevatech say "no problem our machine are number 1". | these machines dont even offer bga selections. These machines do
Electronics Forum | Sat Sep 04 06:01:49 EDT 1999 | Earl Moon
| Dear sirs, | | If you have experienced Proflow of DEK screen printer, please let me know the details of it. | | Best regards, | | Jame Bond | | James, Stir, don't shake is not good advice for cleaning proflo heads. This thing works great, bu
Electronics Forum | Tue Sep 07 12:05:39 EDT 1999 | Brad Kendall
| I am looking for some PM software to use throughout my Electronics factory. Currently, we have a manual system consisting of check-off sheets, log-books, etc. Ideally I would like a system that would throw-up a flag (perhaps by e-mail) when PM is
Electronics Forum | Tue Aug 31 12:42:45 EDT 1999 | Charles Barker
****************************************** ***************** HELP! *************** ****************************************** We are having a special ceramic smt board made. The boards are 16-up arrays that have smt pads on both sides. Only thre
Electronics Forum | Thu Aug 26 11:01:47 EDT 1999 | Wolfgang Busko
| For space contracts we have to mount chip capacitors/ resistors etc 0.1 to 0.4 mm from the pad height. | | This is to compenstae for the CTE differential in the substrate/component and also to ensure cleanliness. | | Does anyone have any new idea
Electronics Forum | Wed Sep 01 14:07:41 EDT 1999 | Dave F
| For space contracts we have to mount chip capacitors/ resistors etc 0.1 to 0.4 mm from the pad height. | | This is to compenstae for the CTE differential in the substrate/component and also to ensure cleanliness. | | Does anyone have any new idea
Electronics Forum | Wed Aug 18 12:35:41 EDT 1999 | Earl Moon
| | WE ARE CURRENTLY HAVING PROBLEMS REFLOWING BOARDS WITH WHITE TIN PLATING. WE ARE NOT GETTING GOOD WETTING ON THE PADS. | | WE HAVE CHECKED THE REFLOW PROFILE AND TRIED DIFFERENT PASTE'S. | | WE THINK THERE MAY BE CONTAMINATION OR OXIDATION ON THE
Electronics Forum | Wed Aug 18 21:18:00 EDT 1999 | Dave F
| WE ARE CURRENTLY HAVING PROBLEMS REFLOWING BOARDS WITH WHITE TIN PLATING. WE ARE NOT GETTING GOOD WETTING ON THE PADS. | WE HAVE CHECKED THE REFLOW PROFILE AND TRIED DIFFERENT PASTE'S. | WE THINK THERE MAY BE CONTAMINATION OR OXIDATION ON THE PADS.
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