Electronics Forum | Thu Jan 29 06:58:40 EST 2004 | davef
Ramp / Soak: Tombstoning is occuring during reflow. You need to get more heat into the ground plane. Obviously a ramp aint gettin' it done. Further, without intending to disrespect your internal discussion, if a linear profile improved the situati
Electronics Forum | Wed Feb 04 13:12:35 EST 2004 | Debbie
Hi Rick, Cleaning No Cleans is becoming more of a norm. It is true that changing to a OA flux/paste would be a easier process to control from a cleaning standpoint. A water soluble process will cost a great deal less as well. However, if your pro
Electronics Forum | Sat Feb 07 18:02:20 EST 2004 | Mike Konrad
Hi Steve, The Windows 98 version of the SMT800-LD software provides for two levels of password protection. One for general use (creating, editing, deleting programs), and the other for maintenance functions (individual device control, machine confi
Electronics Forum | Wed Feb 11 20:59:05 EST 2004 | vinhmach1
Hi, We are all getting the similar thought. I heard other story like the oversea gorverment (China, Brazil, Vietnam...) are taxing $$$$$ for incoming finish products up to the sky per Items. From Automotives to Electronics and others. That forcing
Electronics Forum | Tue Feb 17 10:55:49 EST 2004 | bobbyv40
Hi Dave, 1. As far as speed of removing componants, we use a board preheater to bring board temp to about 150 C. Then add a flux and then flood all 4 sides of the componant with the low temp solder. Using a suction tool the part comes right off. The
Electronics Forum | Thu Mar 04 12:34:48 EST 2004 | cyber_wolf
I know that many smaller companies clean their stencils the same way you do. If you get good results cleaning your stencils this way then I would say stick with the alcohol/wipe method. Take your stencil and put it under a microscope.If the aperture
Electronics Forum | Fri Mar 19 10:08:49 EST 2004 | davef
We don't know dip about your Multitronics 2000 SX, but there may be another angle to take in addition to the Tyco tact that Pete C proposed. The facts may not be precise [someone will hopefully straighten things out], but close enough for your needs
Electronics Forum | Sun Mar 28 22:17:36 EST 2004 | Grant Petty
Hi, I would also be interested in this thread, but our problem has a different twist to it. We have good results from our reflow with Koki no clean paste, however when we pass the boards through the wave solder machine, the flux in that leaves a fog
Electronics Forum | Wed Mar 24 10:04:09 EST 2004 | Marc Apell
183C, 60 +- 15 seconds). The quesiton to use a straight ramp or soak profile comes down to the product your are soldering. The key is to get the whole assembly at the same peak temp (minimized delta) and same TAL for effective formation of the so
Electronics Forum | Thu Apr 08 03:41:19 EDT 2004 | Ian White
I have worken in production lines where attrition rates were measured and acceptable limits were set using 3 classes of parts:- A=Expensive Parts IC's etc, B= medium cost parts Diodes, tants etc, C= low cost parts typically Chop Caps and R's. We set
