Electronics Forum | Mon Mar 10 15:20:41 EST 2003 | MA/NY DDave
Hi Well I don't have all the titles right handy, yet let me give a few places for you to check. All my books aren't exactly at my finger tips. Author: Tumalla (??spelling) He is now at Georgia Tech Author: Lasky, Seraphim Author: Ning-Cheng Lee or
Electronics Forum | Thu Mar 20 12:04:42 EST 2003 | Ren� Sandoval
Hello Garcia: For my experience in Tombstone problems I recommend you to check the next points: -Use Solder paste with 2% silver -Use 5 mils Th Stencil -In some machines , for 0402 or smaller componentes , you require an special holder for the feed
Electronics Forum | Mon Apr 14 22:59:18 EDT 2003 | mantis
We Operate a procedure were by all potenial employes who are likely to be exposed to lead are screened for lead content in there blood prior to hiring,and once every year there after.There is no compensation given as this is mandatory but it is also
Electronics Forum | Mon Apr 21 12:46:48 EDT 2003 | jonfox
It sounds as if the boards are designed in-house. Is this correct? If so, look for SMT versions of the BNC connector. I hhave used one from Johnson Components (http://www.johnsoncomponents.com) or look through http://coaxicom.com for something yo
Electronics Forum | Tue May 06 20:43:31 EDT 2003 | MA/NY DDave
Hi Our SMTnet buddy DaveyF already gave a better and faster reply than I can give at present. Let me give one answer to your question without checking DaveyF's formula which is probably a true equation. DaveyF can always correct me. As you can see
Electronics Forum | Fri May 16 15:45:00 EDT 2003 | swagner
If the only difference between the two products is the board supplier I believe thats where I would start, we had a similar problem like this two months ago and it turned out to be a faulty (thin) HASL layer which did not meet our print tolerance. T
Electronics Forum | Wed Apr 30 09:22:26 EDT 2003 | gregp
Sounds like PSA cover tape. Contact Siemens about this. There may be an adjustment or modification to the feeder to stop it from delaminating the tape. This is generally a problem in feeders that have continuos tension on the take up mechanism (su
Electronics Forum | Wed May 21 15:47:34 EDT 2003 | JB
We have an HSP 4796, if the feeder mechanism is the same, this may help you a bit. First make sure that the componet definition is right on the component library. Tape or Embossed. Second, the component thickness vs actual thickness. Is the pick u
Electronics Forum | Tue May 27 12:53:15 EDT 2003 | davef
Our solder irons are tuned to 700*F, but the in-use temperature varies according to the solder alloy and the characteristics of the board and components. Check some of the papers on multilayer ceramic capacitors. They get fairly specific, for insta
Electronics Forum | Mon Apr 12 10:39:48 EDT 2004 | Ron Herbert
Correct preheating of the assembly is critical. Check with your flux manufacturer regarding the recommended topside pcb temperature as it enters the first wave. It is important that this temperature be achieved without burning the flux on the bottom
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