Electronics Forum | Mon Apr 30 10:48:10 EDT 2001 | CAL
oktayunsal- Machines are your secondary problem. Knowing and understanding SMT process is your biggest obstacle. SMT process involves Electrical, Chemical, Industrial, and mechanical engineering disciplines.As a start I would begin with IPC related
Electronics Forum | Wed Aug 23 16:29:16 EDT 2000 | Dr. Ning-Cheng Lee
The surface tension of solder you mentioned should be referred to as interfacial tension between solder and flux. According to Antonow�s rule, the interfacial tension is the difference in surface tension of molten solder and liquid flux. Since flux a
Electronics Forum | Tue Aug 22 15:34:55 EDT 2000 | Dr. Ning-Cheng Lee
An example of very low melting point Pb-free solder is 58Bi/42Sn. Different versions of this alloys have been tried, such as doping with various additives, in order to enhance the reliability further. Yes, Bi is one element which promises low mp for
Electronics Forum | Thu Jul 20 12:16:26 EDT 2000 | Dave F
Bob: On "paste push-out" (when inserting a component lead into a through hole pushes the paste out of the hole) in pin & paste assembly: * What factors affect paste push-out? * What techniques reduce this effect, given a board design and component
Electronics Forum | Fri Aug 24 14:56:11 EDT 2001 | Hussman
Paul, All the machines yulisted are very god at placement. One thing to keep in mind is parts availability. Some of our jobs come from the customer in "kits". Not everyone supplies you with a full real of parts. Be sure that the machine you pick
Electronics Forum | Mon May 14 09:24:36 EDT 2001 | rkevin
Can anyone shed some light on this for me ? Subject: Soldering to Immersion Tin surface finish I am looking for info. (pro and con) and/or 1st hand knowledge processing PCB's with Immersion Tin finish through SMT and Wave. Do profiles need to be di
Electronics Forum | Tue May 15 19:56:43 EDT 2001 | davis_brinkley
I have the chance to purchase some Amistar SMT equipment at an extremely good price. I have been in SMT for a while and I am most familiar with older Quads and some Zevatech.I have many questions and concerns about Amistar that hopefully someone can
Electronics Forum | Wed May 30 20:39:02 EDT 2001 | davef
Everyone has different needs. We all make trade-offs on costs versus benefits. So, you should determine the value and functionality of the Forums by participating in the current threads, scanning archived threads for pertinence and appropriateness
Electronics Forum | Thu Jun 07 07:11:41 EDT 2001 | stefwitt
8" ). For calculation of the theta angle, the global fiducials should be placed over the diagonal. Component recognition can be improved if your vision system has different light zones. The steep light should be turned off and the flat light turned
Electronics Forum | Mon Jun 18 08:14:20 EDT 2001 | Carl Evans
If you require several changeovers per shift the quick connect closed loop pump option would be your best bet.You can change between pump and blades within minutes. Hoever if you have several different size pumps a simple pump switch over would be pe
