Electronics Forum | Thu Mar 15 21:09:07 EDT 2007 | KEN
Cecil, the board is a component.
Electronics Forum | Thu Mar 15 09:58:22 EDT 2007 | KEN
Anyone know which IPC document covers this? Me thinks 6....but want the IPC spec. to back this up.
Electronics Forum | Thu Mar 15 10:28:46 EDT 2007 | cecil
Just askin but why would someone even want to subject an assembly to even 6 reflow cycles? As far as how many cycles that an assembly can be subjected to, wouldn't that be determined my your components?
Electronics Forum | Thu Mar 15 20:49:16 EDT 2007 | davef
There is no IPC document, nor should there be. Look here: http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=48102
Electronics Forum | Thu Mar 15 12:33:50 EDT 2007 | ck_the_flip
To do a profile at most companies, if you don't have a scrap board handy, you'll use the already-soldered board that's already been through ONE reflow cycle. You spend time attaching T/C's with the aluminum tape - after all, the prep-work is half th
Electronics Forum | Wed Feb 09 06:35:18 EST 2000 | Mark Williams
Hi We use 2 criteria... maximum void size is 10% of the solderable surface and a maximum area of voids of 10% of the maximum cross-sectional area of the ball. Any views Mark
Electronics Forum | Tue Jun 28 11:31:23 EDT 2005 | kennyg
Anyone know of a maximum solder overprint formula? I need to overprint a 0.011" wide aperture but want to go out to 0.050" overprint. This seems extreme, but necessary as I can't go out in width due to numerous issues. It seems like one could come
Electronics Forum | Wed Oct 31 11:01:02 EST 2001 | dougie
Hi Dave, Thanks for the suggestions. To clarify a couple of the points... - What do you qualify as "small" & "large" parts? - Do not make the pad narrower than the lead width. The nominal or the maximum? If I use the maximum width I'll be back to s
Electronics Forum | Mon May 23 06:38:27 EDT 2005 | geb
How do you find out what it is configured to, and change it. Why would it be lower than its maximum capability?
Electronics Forum | Mon May 23 08:21:36 EDT 2005 | Dave G
Things that lower the maximum Board width: Nozzle changers,dual lane vs single lane, staged vs classic board handling, PTF, Comp Shuttle. Moving the changers into the feeder banks will increase your max avail width provided a shuttle or ptf are no
