Electronics Forum | Thu Apr 17 07:44:59 EDT 2008 | GSx
Check for lead finisching Lead Free finiscing like (e4), in case of AgPd plating you may have similar soldering problems Regards
Electronics Forum | Wed Nov 06 14:57:56 EST 2002 | rmorford
Nothing funny seems to happen to the connector when heated. I have no idea how to monitor the temperature of a good pad vs. a bad pad because I have no idea before reflow which ones will be good and which will be bad. I did take a board and rip the
Electronics Forum | Wed Nov 06 08:59:51 EST 2002 | rmorford
This defect is there after reflow. My first thought was that the boards had some sort of contamination, too. This is a new PCB manufacturer for this board (they have been making other boards for us). But... why only on the connectors -- why only o
Electronics Forum | Tue Apr 15 03:16:14 EDT 2008 | janz
Hello, We are having a problem with soldering QFP100 (16mmx16mmx1mm). Board dimensions: 70mmx50mmx1.8. FR4 two layers � single SMT assembly. Finish: HASL-lead free Oven: 7 zones �hot air Paste: lead free We have noticed that two groups of legs
Electronics Forum | Fri Mar 01 16:00:34 EST 2002 | Alfred
Hi Everyone, I am currently looking for a simple testing setup procedure to conduct solderability test in my small lab. Just wonder if anyone has any idea what kinds of equipment or preparation I need to get started. Any input like what website to g
Electronics Forum | Fri Mar 01 16:26:48 EST 2002 | Alfred
Hi Everyone, I am currently looking for a simple testing setup procedure to conduct solderability test in my small lab. Just wonder if anyone has any idea what kinds of equipment or preparation I need to get started. Any input like what website to g
Electronics Forum | Tue Nov 05 18:17:00 EST 2002 | russ
This sounds like a contamination issue with the HASL finish.(solder on lead but not on pad). I have experienced this before and it was related to the HASL process at our supplier. They found some type of contaminate in the bath (unfortunately I can
Electronics Forum | Wed Nov 06 10:31:30 EST 2002 | davef
First, from what you say, it's unclear that there is a "solderability" issue with your connectors. Different appearance of the soldered connection from one side of the connector to the other is what we're talking about [I think]. But it is curious.
Electronics Forum | Wed Feb 09 19:55:27 EST 2000 | Russ
Hello All! I have a problem that hopefully someone out there might have some ideas. I have an assembly that upon the "dental pick test" the entire solder fillet is coming up with the lead and leaving what appears to be a bare pad. I believe that th
Electronics Forum | Tue Apr 15 06:10:54 EDT 2008 | aj
Try a new batch of Components ? We had a similar problem a while back - it was down to the component. aj...
.gif)
