Electronics Forum | Wed Nov 06 16:31:59 EST 2002 | slthomas
I would also consider paste control (don't take it personally...I always have to get after people about this one), time on the stencil, time between print and reflow, solderability of the component leads, paste volume (that one really got us once....
Electronics Forum | Mon Nov 25 20:57:23 EST 2002 | Kermit
Thanks to everyone who has responded so far. We are going with dedicated tooling for our phone cards but not for our system cards so that takes that out of the equation for the former, will evaluate for the system bds.. Thanks for the info.. Regard
Electronics Forum | Thu Nov 14 09:43:33 EST 2002 | MA/NY DDave
Hi I will only hit only a few and then bug out. Worked with one large EMS place that has the "fail first" approach to engineering and manufacturing. ( I know I know THEY all do). They didn't store the paste as the mfg suggested, they didn't control
Electronics Forum | Thu Nov 21 07:57:37 EST 2002 | gramsey
The information you are seeking is found in IPC-7525. Section 3.3 describes an equation for calulating the solder paste volume required to produce a desireable fillet. I simplified it a bit. V=1/s[Tb(Ah-Ap) + Ft + Vp] - Vh V is the volue of paste
Electronics Forum | Tue Dec 03 13:35:22 EST 2002 | wpease
Hi Brad, Before I tell you my glove fits your hand, I'd like to see your hand. More specifically I'd like to learn more about your application. Board size range? Component size range? Finest pitch? Degree of warpage? Two-sided? etc. Contact m
Electronics Forum | Sun Dec 22 11:02:44 EST 2002 | valuems
I am breaking a cardinal rule with this reply, but here goes. I believe almost every one is missing this one. Roger has hit the nail on the head. The gentleman is useing a clam shell printer and when the stencil lifts (too fast) and at the angle o
Electronics Forum | Fri Jan 24 21:45:14 EST 2003 | jonfox
We have had to return 6-8 lots out of the last 20 to the board house we (used to) use. From V-score cutting through pads to missing pads (and they say they electrically test our boards?!). I mean, come on, you can look at a PCB and see if there is
Electronics Forum | Fri Jan 17 21:17:18 EST 2003 | Grant Petty
Hi, Our paste release problems have been solved, and we worked on the stencil, and things are working well now. However this board was designed before we knew what was going on, and we thought a little more size on the pads would be a big help. Is
Electronics Forum | Wed Jan 22 18:03:54 EST 2003 | slthomas
You probably pay the same as me. Ours is just fresher. ;) So fresh, in fact, that sometimes we can smell the brewery, when it's breezin' southerly. Not particularly appetizing, actually, although not as bad as the Stock Pot soup factory. City-wid
Electronics Forum | Wed Jan 22 21:59:54 EST 2003 | davef
First, wheat beer is not intended to be consumed at this time of the year in the northern hemishpere. It is ment to be consumed on the back porch, while smoking the LARGEST cigar you own, after mowing the lawn on a day that is so hot that the dog ca
