Electronics Forum | Mon Mar 22 15:41:08 EST 2004 | jgregory
Hello All, I know this is "SMT"Net, but I have a question regarding thru-hole lead-forming. I know we, as SMT personnel, also have duties in thru-hole from time to time. I am looking for a TO metal can leadforming tool with either fixed or adjustabl
Electronics Forum | Sun Apr 18 06:49:10 EDT 2004 | Nick Prince
You might like to check ou the SSTC at the National Physical labs, in the UK. They have done a lot of research in mixing PB and PB free alloys. Its high Science stuff but intelligable. The upshot seems to be that if you mix PB and PB Free alloys th
Electronics Forum | Wed Apr 14 12:23:59 EDT 2004 | Ted
Hi everyone! I am looking for a lead-free solder that will survive a customer reflow of 260C. I am currently using SN10/Pb88/Ag02 but the reflow temperature is to high (320C) for the FR4 boards that we have. I know there are higher temp FR4 boards
Electronics Forum | Thu Apr 22 06:42:03 EDT 2004 | Chris Lampron
Adam, What is the pad finish on the flex circuit? Is this the only component that you are having problems with? (on this Flex)If this is the only problem area on the flex (assuming there is more than one component)then that would lead me towards the
Electronics Forum | Mon Apr 26 17:12:14 EDT 2004 | babe
Take a solder iron with some wire solder and attempt to tin the leads of the component. Look under magnifier or microscope. Did they wet? If not try fluxing them with liquid flux and then soldering again. Did they wet? If they did not then you may wa
Electronics Forum | Tue Jun 01 19:23:15 EDT 2004 | Ken
profile it for the tin/lead paste. The tin in the solder paste will begin to disolve the sac ball. This is exactly the same scenario as 90/10 (80/20)high temp balls found on ceramic bga and many super bga devices (except the sac balls are now tin r
Electronics Forum | Thu Jul 15 07:08:29 EDT 2004 | pcbrown
Basically, it's a tilting problem of certain devices. Usually with axial by-pass caps tilting, which pulls the lead up through it's mounting hole. Other problems with components with leads cut to lenght to eliminate post-wave trimming. All suggestion
Electronics Forum | Thu Jul 22 22:18:12 EDT 2004 | davef
Notes from an AIM No-Lead Presentation ... Wave Soldering * May require a higher pot temperature than tin/lead: 255-265*C * May require a change in liquid fluxes to compensate for the poor wetting of some alloys and high thermal stresses of the wave
Electronics Forum | Mon Jul 26 06:53:08 EDT 2004 | teilo
We manufacture conversion kits for lead free wave solder machines. We recommend that all component parts be manufactured from grade 1 / 2 Titanium which is far superior to any coatings applied to stainless steel and not as expensive as people think.
Electronics Forum | Sun Aug 22 08:31:50 EDT 2004 | wsoto1
Could someone help with the definition of AVL? Assy vertical leads or automation vertival lead. Also, is there a site where I can learn more about this and expand my learning. I am trying to get back in this field and make a proposal for a company.
