Electronics Forum | Thu Jan 07 15:28:52 EST 2010 | cbart
did the boards get built by hand or via smt process (through reflow oven)? Someone asked earlier if some one touched up the adjacent joint. The answer to that question is yes. Look at how the solder tails off the smt pad away from that joint! I suspe
Electronics Forum | Mon Jan 18 11:39:14 EST 2010 | tech1
Actually the color represents the amount of cover tape that is exposed or peeled over. 01005 - 0402 Green 0402 - 0805 White 0603- 1206 Yellow 0805 - on up Red We use the Green feeders for 01005 placement, they made a later rev that has a magnet in i
Electronics Forum | Wed Jan 27 12:44:42 EST 2010 | wrester123
I am writing to get a general idea from the people on this forum. In percentage of machine total cost, what are companies charging for service contracts. Are they all inclusive, parts and labor only, pre-scheduled, and so on. Also what type of con
Electronics Forum | Fri Feb 05 14:29:14 EST 2010 | kaz
the board in question is from Foba Laser Engraver, it's a surface contamination coming from.. everywhere, a lot of moving parts that are lubricated. I'm now studding chemicals that we may use for our kind of rework & cleaning. We may think of modifyi
Electronics Forum | Sun Feb 07 11:56:05 EST 2010 | mystkldy
Makes us wonder how well the connections on the > component match with the pads on the board. The pads are actually larger than the leads on the part, but I think we may have figured it out. We believe the conveyor vibration is causing it. When we
Electronics Forum | Tue Feb 23 12:56:03 EST 2010 | vleasher
Is there any harm in washing SMT soldered with NoClean paste? The PCA has some large thru-hole connectors that we would prefer to do as water soluble on out selective solder but the SMT consists of LGA's and other low parts that we would not be able
Electronics Forum | Thu Feb 25 14:06:56 EST 2010 | CL
Good Afternoon Duane, Surface tension should be adequate to hold the smaller BGA's during second side reflow. You will need to ensure that nothing comes in contact with the parts during reflow. I have added a chipbonder adheasive at the edge of some
Electronics Forum | Fri Mar 05 21:38:29 EST 2010 | 89jeong
Hello Guys. Many thanks for your interest in this matter. I believe we can solver this. The affected part is Photo coupler and has the same metallization. FYI, i attached another picture. You can compare the solder fillet of leads. The affected posit
Electronics Forum | Sun Apr 11 23:29:39 EDT 2010 | cadcopac
Hi chas, Should you still be in the market for "thru hole to smt conversion" services we are doing this sort of design all the time even converting a supplied stuffed board into gerber files for manufacturing with a parts list and all assembly files
Electronics Forum | Fri Mar 19 13:18:03 EDT 2010 | deanm
Regarding your question about buying equipment to vacuum seal the MBBs, according to the IPC/JEDEC standard, "Full air evacuation is not needed or recommended; light air evacuation will reduce the packaging bulk and enhance carton packing. Excessive
