Electronics Forum | Mon Jan 30 19:20:45 EST 2017 | jgo
Thanks Rob. I'm not so sure in a mass production environment that using the mount spray and kapton tapes are going to be efficient. For solder paste dispensing, any idea what is the smallest solder dot size the machine can dispense?
Electronics Forum | Fri Jan 27 17:36:40 EST 2017 | davef
Consider that printing may not be the only approach to getting paste on to your board. Would a dispenser work better?
Electronics Forum | Tue Jan 31 08:59:24 EST 2017 | rob
Hi Joshua, We ran 150K per week this way, you just need a lot of pallets. Regarding dispensing I've seen 0201 (Imperial)paste dispensed, so about 0.4ish mm dots. I'm sure the Mydata printer is also pretty high resolution too, but not too quick.
Electronics Forum | Mon Jan 30 05:58:39 EST 2017 | rob
Hi all, > > Am new to SMT here. > > I have a very > thin laminate substrate which around 120um > thickess. Being that thin, warpage is constantly > an issue for us. > > For the solder printing part, > we have a number of problems. > > Being s
Electronics Forum | Wed Jul 27 09:58:05 EDT 2011 | davef
Pressure printing systems Conventional stencil printing techniques have fundamental limitations as regards paste handling: The volume of paste available for printing is limited, so frequent replenishment is necessary Paste is difficult to c
Electronics Forum | Fri Jan 28 04:03:51 EST 2011 | grahamcooper22
Print then dispense in the areas you need extra paste. Why can you not use a stencil which has areas etched away around component patterns to thin the stencil down....for example a 150 micron thick stencil etched to 120 or 100 microns in specific are
Electronics Forum | Thu Dec 16 18:36:01 EST 2004 | mattkehoe
We use water soluble solder paste. When it gets a little dried out, can we add something to rejuvenate it? Liquid flux? We do not place components, just print and reflow the solderpaste so solderballs, spattering, and other issues like those are of
Electronics Forum | Thu Mar 22 17:37:06 EST 2001 | davef
Hey!!! Watch it!!! I don�t want to get you believing too much of this stuff. But if you bought that, listen to this � some circuits are so critical with that skin effect stuff that they use silver as the top level solderability preservative. Turn
Electronics Forum | Wed Feb 22 19:21:36 EST 2006 | arnie
what content of leadfree solder ot type leadfree solder should i use to avoid the leadwires being thin after dipping to solder pot.
Electronics Forum | Mon Jan 30 19:22:28 EST 2017 | jgo
I just assume when you have laminates that thin, it will invariably be warped in some degree. I have worked on a few and I have never seen one that is not warped consistently.
