Electronics Forum | Wed Feb 28 19:48:11 EST 2001 | davef
If we were talking about a single board problem, we�d be thinking about the laminate, but since you imply the problem is broad-based across multiple assemblies, consider the following machine parameters: * Crank-up preheat time / temperature to driv
Electronics Forum | Mon Jun 25 20:35:44 EDT 2001 | davef
According to J-STD-004 "Requirements for Soldering Fluxes", fluxes are classified by their chemical composition, activity level and halide content. In this scheme, each flux type is identified by a 4-character designator, where: * First two character
Electronics Forum | Fri Nov 17 17:34:26 EST 2006 | realchunks
OK, why are you hand fluxing? You may want to take the time to use your real fluxer. Yeah, it's a bit messy but you can control the amount of flux you're putting on the board. And with water based fluxes, this is critical. If you are stuck to han
Electronics Forum | Tue Nov 13 21:59:42 EST 2007 | davef
This processes has the potential to cause barrel cracking and pad lifting, because the heating is very hot [troop crank-up the volume on their iron when they see thick boards] for a relatively small area on one side of the board. What do we suggest
Electronics Forum | Thu May 27 19:00:37 EDT 2010 | emrtech
not just speed, looking to reduce down time on having to re-do boards from bad stencil screening. also, the accuracy of placing solder paste down on PCB's. why would you want an employee spending so much time aligning fiducial marks from panel to pan
Electronics Forum | Wed Jun 27 10:17:46 EDT 2001 | genny
OK....I now fully understand the difference in chemical makeup between rosin and resin. But....can you, or would you, mix them without any concern? Could you or someone please just give me a straight yes or no answer? Please? Of course,... I woul
Electronics Forum | Mon Dec 22 16:19:26 EST 1997 | Justin Medernach
| Need help determining the size / $ value of the stencil market | in North America. Can you offer suggestions as to who or where I can go to get a grasp on this data??????? | Thanks for any help. Dave, The market is huge. I work in the New England
Electronics Forum | Fri Jun 19 07:50:26 EDT 2009 | stepheniii
I worked for a company that had an industrial nurse come in to discusss lead with us. Short version; "There is nothing in the plant that will even come close to vapourizing lead" and "don't eat it". She said it's normal for everyone to ingest some
Electronics Forum | Mon Jul 01 13:19:55 EDT 2013 | emeto
I always look for a toe fillet if the design allows you to. Many times the pad design is close or exactly the size of the leads which makes people to touch it up right away. I told them hundred times not to but...Luckily I have 3D x-ray and I can tel
Electronics Forum | Tue Oct 06 17:36:20 EDT 2020 | hearsehauler
Have used stencils for low volume paste printing for 18 yrs. New job uses jet printing (MY500). But machine is limited to .33mm dot size. Parts used here have pad sizes that are .25mm or smaller, so paste touches between pads when printed. Thankfully
