Electronics Forum | Tue Aug 26 21:20:58 EDT 2003 | iman
You may check with the TDS of respective "active parts" IC manufacturers for their recommended no. of thermal cycles permissible in the reflow process. Last I checked 3 cycles for our RF-apps IC was still allowed. For 48pin-QFPs this can be allowed
Electronics Forum | Tue Nov 18 06:13:42 EST 2003 | joanne stevens
Does anyone know how i may get a kit for checking marking solvency mil-stand 1285b? I know 2 of the chemicals and am unsure of the other. Want to be able to perform in-house testing. sure can use some leads.
Electronics Forum | Thu Dec 02 18:09:28 EST 2004 | resslerr
There are a few solution out there...Aegis, Valor, Technomatix...each with their own shortcomings. Check out the integrated solution offered by Router Solutions Inc. & Sony. They offer a real solution to cover the entire assembly and test cycle, wi
Electronics Forum | Thu Aug 05 16:15:18 EDT 2004 | pjc
Are you considering baking due to moisture exposure? Not all OSPs are created equal. I would check with your PWB fabricator about dry times and effects on their OSP finish. After you get it, I'd still try just one PWB for bake-dry out and check solde
Electronics Forum | Thu Dec 02 17:29:35 EST 2004 | resslerr
Sony has a system which is used in all its factories worldwide. With this system, you can check the actual production condition, and more, anytime over the web or you can have the system find you via radio, pager, phone, e-mail to provide you the st
Electronics Forum | Mon Oct 18 12:55:47 EDT 2004 | marc
45 seconds from 230-245C. Check your paste material of choice for recomended profile peak temp and TAL. If you have not selected a lead free material check out the major paste suppliers on their lead free material offering and review the specs.
Electronics Forum | Thu Mar 03 11:10:20 EST 2005 | Dougs
I'm telling you i've bought the nozzles wound the wrong way and it helped, no more probs with nozzles sticking, i'd tried buying fuji nozzles, checked all my component heights, set Z0 properly, checked shaft heights, set up st1, etc etc but the new s
Electronics Forum | Sun Feb 27 21:39:26 EST 2005 | smtuser1234
First thing is you should be using a 08MPFX nozzle for a 0603 part if you are using a flex head. Then to check the vacuum you should have received a vacuum gage with a nozzle tip that fits on to your spindle and then you turn on the vacuum in diagnos
Electronics Forum | Mon Feb 28 08:34:46 EST 2005 | Alex
Good advises thanks. I'll go thru all nozzles and vacuum check today and tell the programer about PD's and nozzle vs shutter. Should I check at the same time all the vacuum filter ? For the placement test, we use the same feeder at the same position.
Electronics Forum | Mon Feb 28 16:04:30 EST 2005 | Alex
I use to have that kind of problems with other type of machines and here are the causes: 1- Spray fluxer head partially obstructed (check flow rate) 2- Defective pre-heater probe (manually check temps) 3- PROFILE (last preheat to 280) 4- we sometimes
