Electronics Forum | Fri May 23 18:55:20 EDT 2008 | gregoryyork
This is one of the biggest mistakes with the Lead Free process. We have all listened to the 'industry experts' and followed their advice and unfortunately got it wrong. Keep the dwell times (dependant on alloy selection) the same as Leaded so you are
Electronics Forum | Wed Nov 07 21:36:17 EST 2012 | davef
Multiple process and rework thermal cycles are brutal on boards and components. Improving reliability of products through reducing thermal stress ends-up being a major driver to the interest in lower MP LF solders. Binary LF solders require the addit
Electronics Forum | Thu Nov 15 09:29:29 EST 2012 | anvil1021
Maybe this piece of information will help. In China (just returned from visit) there are many factories that are using a dual temperature process using SAC305 or Sn100C and 42/58. Apparently this allows them to run their through hole parts through re
Electronics Forum | Thu Feb 12 11:35:17 EST 2004 | Kris
what is the composition of the paste and ball ? Interesting to know why the customer is asking you to look for it Thx
Electronics Forum | Fri Feb 13 11:46:23 EST 2004 | Jack
Is your customer trying to reduce voiding? If the device is using Sn90 / Pb10 and the paste is Sn63/Pb37 the board will melt first. However, if both solders are 183C eutectic, it's a tossup? PCB design, copper weight, bga type (pbga, micro bga, Tbg
Electronics Forum | Tue Jan 17 10:59:43 EST 2006 | Rob
Hi Pete, Thanks for taking the time to respond. My experiences with Mydata would differ from yours, but as in life, different machines are for different circumstances. We have many low volume customers that love them - they are easy to use, upgr
Electronics Forum | Wed Nov 07 15:01:18 EST 2012 | nikyta
Thanks Dave , my question is about Spopov want to try "Lead Free" SnBi (but uses it on Leaded finishes), but is worry about its low melting point (at this point, no longer 138 degrees as he wrote, but rather in an unknown and unpredictable range bet
Electronics Forum | Fri Jan 24 16:57:39 EST 2003 | MA/NY DDave
Hi, I will give just one of the couple of ways I have seen. Once a particular product is debugged, verified through the process the profile of the Oven and it's settings are stored on a separate PC. Prior to running that product and at the start of
Electronics Forum | Sun Aug 23 22:13:45 EDT 2009 | joannetjy
Hi All, Recently, I need to deal with a customer complaint that specify the PCBA white residue (flux residue from ecofree 303) may be the reason why the board intermittent. Anyone have such experience with this flux? Anyone can tell me is this flux
Electronics Forum | Mon Aug 15 18:42:53 EDT 2011 | bandjwet
Does anyone have experience in doing dye and pry analysis on PoPs? A customer wants to know whether or not the board level or device-device interconnect is the suspect. What other technique can anyone recommend? BWET