Electronics Forum | Wed Mar 08 09:54:11 EST 2000 | Jacqueline Coia
Finally got using the calculator guys, (used another server connection). Not sure about the data that is entered for 'solder joint analysis', any helpful hints? To touch on the subject of Scots people being 'cheap', I cant understand these rumours, w
Electronics Forum | Thu Feb 24 11:11:25 EST 2000 | Russ
I have seen this before, our problem was palladium termination of this component. We could not change suppliers so we use a "reverse homeplate" stencil design to put the majority of paste directly underneath the solder terminations of the component
Electronics Forum | Wed Jan 31 11:20:01 EST 2001 | slthomas
Thanks, Pete. In our case I think the device is just too much of a challenge to take on as a first try at the process. The reduction in lead volume from the optimum round lead to the "crescent" shape pretty much sunk us from the get-go. Just could
Electronics Forum | Tue Jan 30 07:55:31 EST 2001 | ibi
I will have to process a PQFP 128 with a pitch of 0.4 mm. Given that the width of its leads are about 0.13-0.23 mm, i dread the worst when printing the solder paste. So, i would like to know if some people have yet test this type of fine pitch, what
Electronics Forum | Fri Feb 02 12:05:54 EST 2001 | slthomas
There used to be a thread on this very topic in the archives, but I'll be danged if I can find it. One company name I've forgotten and lost, but their product name is Gold Finger Gloves, I think. I sent them an email and left a voice mail message i
Electronics Forum | Mon Mar 19 21:50:15 EST 2001 | Mike Beach
Steve, I don't like the fumes in my face either! Can you forward me any decent replies? It would be greatly appreciated. Presently at work we have a fan with a carbon filter attatched. This works fairly well if properly positioned, and it is incre
Electronics Forum | Mon Mar 19 21:51:07 EST 2001 | Mike Beach
Steve, I don't like the fumes in my face either! Can you forward me any decent replies? It would be greatly appreciated. Presently at work we have a fan with a carbon filter attatched. This works fairly well if properly positioned, and it is incre
Electronics Forum | Tue Apr 10 11:39:29 EDT 2001 | brownsj
One of the reasons for a grainy joint is the cooling of the joint after reflow. Check your reflow profile, not just the preheating and reflow section but also the cooling zones. It works the same way as molten rock. If it cools slowly you get pumice
Electronics Forum | Tue Jul 24 14:00:08 EDT 2001 | Steve Schrader
Greg, Yes, I did my tour of duty. Is your boss back from Bermuda yet? If so, tell her to check her email! Thanks. BTW, there could be a benefit to moving parts, but that would be dictated by your ability/inability to achieve a proper reflow prof
Electronics Forum | Wed Dec 15 15:55:05 EST 1999 | Mike Naddra
As a general guidline I would agree with a 10% aperature reduction on chip caps , resistors, and fine pitch provided correct land geometries. When soldering to HASL surface finishes. Three things you may want to consider ; the stencil thickness, the
.gif)
