Electronics Forum | Sat Apr 14 03:25:10 EDT 2001 | kpliew
Hi , As far as I experienced with wave reflow. If u have a refective thermal reader , u will see that the board is exposed to much more temp than the 120 deg that u set. Actually , once u see the board warp or comp. crack u should know that
Electronics Forum | Mon Apr 16 12:59:51 EDT 2001 | Mike R
If you will place a temperature strip on the board during wave soldering process you will get a max of 210 F or 98.8 C which is normal on the standard wave temperature. The problem on the 10% solder on the TH via hole can be caused by insufficient fl
Electronics Forum | Mon Apr 16 12:31:27 EDT 2001 | mparker
If, after all the good advice already given, the engineer insists on following his wacky design, you may still be able to influence some success. First you have the fab house plug the via holes with solder then you make sure that the bottom side of
Electronics Forum | Tue Apr 17 11:00:55 EDT 2001 | Steve
I have struggled with this myself. Usually where the pressure to clean the residue off is from the people who see the residue but do not understand the characteristics. I have not found a reason to clean residue off. A few people from our design gro
Electronics Forum | Tue Apr 17 19:35:55 EDT 2001 | Brian W.
I have only found one reason to clean the residue. On some high power/high impedance or RF circuitry, that little bit of residue caused electrical performance problems. Other than that, most people who want it cleaned are having it done for vis
Electronics Forum | Wed Apr 18 01:07:25 EDT 2001 | MW
I some something like this. My package was not flat the belly of the body rested on the PCB. We found that every 4-5 part would wander to the side. What was puzzling is that the blowers would have blown it the opposite side. ultumately we proved
Electronics Forum | Thu Aug 16 17:18:34 EDT 2001 | ohanlon
DEK has a portable Printer caddy that holds five 29 X 29 stencils. It also has a place to store Squeegees and a stainless steel top for clean up. If you go to their website DEK.com under their "screen & stencils" section you can read about it.
Electronics Forum | Wed Apr 18 20:47:45 EDT 2001 | Dreamsniper
Hi Mr. Parker, Let me continue... "We, the people of Electronics Manufacturing Industry, in order to make a more perfect termination and to be able to produce a reliable interconnect, do solemnly swear that from this day onwards we will be using so
Electronics Forum | Thu Apr 19 09:37:31 EDT 2001 | marquesj
To this Guy`s Author: Michael Parker Author: Dreamsniper Caso pretendam falar a serio enviem um e-mail pessoal e deixem o forum em paz, caso contrario deixem trabalhar quem gosta. sorry, couldn't resist!!! To: Mr. Dave F Thank`s for your help.
Electronics Forum | Fri Apr 20 07:12:22 EDT 2001 | wbu
Dougie, oh yes, it�s a bit short that chapter. I have the Revision e in front of me and this one contains in the appendix the needed IPC-TM-650 Test method for bow and twist. Can�t think that they don�t have that in the new revision. Hope you find