Electronics Forum | Thu Nov 18 03:54:49 EST 1999 | jacky
Hello,everyone, I want to know how I can test the reliability of the solder point.And now we just push or pull the components to test the reliability of solder point,but I don't know if there is any measure of the power applied to the component
Electronics Forum | Thu Nov 18 10:56:16 EST 1999 | Dave F
Jacky: There�re major four factors that affect the reliability of a solder connection. 1 Design of the connection including the shape and height of the lead and the type and amount of solder. 2 Dissolution of base metals into the solder connection.
Electronics Forum | Tue Aug 22 11:29:45 EDT 2000 | �ngelo Marques
Hello, Dr. Ning-Cheng Lee The melting point of solder PB-Free its to higher do you now the lower temperature of an PB-Free and its constitution. Its true if the solder paste have in its constitution a Bismut component the melting point its lower?
Electronics Forum | Tue Jan 20 16:11:19 EST 2004 | MP
I am searching for tabletop/stand-alone point to point soldering equipment. What do you recommend for a low/medium price range? I tried Automation Unlimited, it appears they are no longer in business. thanks MP
Electronics Forum | Tue Jan 20 16:27:34 EST 2004 | pjc
have a look at these: http://www.necoa.com/products/apex-c2-s.shtml http://www.mta.ch/download/SOUDAGE_ANG.PDF http://www.jusmech.com http://www.chiphua.com/robot.html http://www.jmax.co.jp/e_ntx811.html http://www.horiuchielectronics.co.jp/e
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 | Wed Aug 23 08:55:39 EDT 2000 | Dave F
Dr. Lee: Taking a tangent on your response ... When talking about alternate solders. Bismuth forms an alloy with lead with a melting point of 93�C. Are there special conditions that cause this alloy to form? Or does the alloy form commonly when
Electronics Forum | Wed Aug 23 17:15:25 EDT 2000 | Dr. Ning-Cheng Lee
The ternary SnPbBi phase does form commonly when Pb and Bi are combined. No special condition required. Presence of this phase jeopardizes the reliability for applications involving temperature near 96C. Using low temperature solders means a lower s
Electronics Forum | Mon Feb 26 20:02:42 EST 2001 | davef
First, I don�t understand why your board fabricator can�t do a good job plugging your vias. Additionally, when you consider that they forgot to plug the first batch of boards, it makes me wonder if they are desirable as a supplier. Generally, we us
Electronics Forum | Tue May 13 07:04:54 EDT 2014 | hemant_pang23
I am looking for the solder wire leaded or lead free which can withstand the solder joint at temperature 450deree Celsius or more after soldering, since i need to form a solder joint at higher temperature area Pls suggest the part number for the sam
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