Electronics Forum: lead-free (Page 1 of 307)

lead-free

Electronics Forum | Fri Apr 30 09:52:02 EDT 2004 | frank.verleye@barco.com

What will be the impact of the introduction of lead free soldering, for deciding to test a specific foard under XRAY or AOI? How will false call and detecion rates evolve, on both?

lead-free components

Electronics Forum | Mon Jan 18 06:31:27 EST 1999 | Marcus Wagner

Hi, I�m searching for manufactores of lead-free components (resistance, capacitors ...) Do you know adresses, websides ... to get some information? Please tell me.

lead-free wave

Electronics Forum | Tue Jul 24 03:26:45 EDT 2001 | winnifred

Dr. Lee, For lead-free wave soldering, we are recommended to use SnCu0.7, why not 0.8 or more ?? Since SnCu0.7 has eutectic melting point at 227 deg C, does it mean with more Cu or less Cu, the melting point will be higher ?? Also, in lead solderin

lead-free stencil printing

Electronics Forum | Fri Sep 26 08:28:24 EDT 2003 | successmani

Thank you Russ for the information. One more clarification- I found that the %metal content in lead free paste is in the range of 88-89.5 whereas %metal content in Sn-Pb paste was 90% in general. What is the reason behind this reduction of %metal co

lead-free stencil printing

Electronics Forum | Thu Sep 25 12:59:14 EDT 2003 | successmani

hi, I am a research student in Electronics manufacturing at RIT. We are planning to assemble boards using lead free solder paste. I was wondering would there be any changes in printing in using lead-free paste"Sn-3.9Ag-0.5Cu". Thedensity of Sn-37Pb

Re: Low-temperature, lead-free solders

Electronics Forum | Tue Apr 20 03:25:21 EDT 1999 | Scott Davies

Joseph, I've heard of a lead free solder alloy, Sn43/Bi57 that melts at 139�C and reflows between 160-170�C. You may find the following website useful. Good Luck Scott

Re: Low-temperature, lead-free solders

Electronics Forum | Tue Apr 20 03:26:57 EDT 1999 | Scott Davies

Joseph, I've heard of a lead free solder alloy, Sn43/Bi57 that melts at 139�C and reflows between 160-170�C. You may find the following website useful: www.cobar.com Good Luck Scott

lead-free mixed technolgy

Electronics Forum | Fri Nov 07 08:12:24 EST 2003 | caldon

From my understanding (and I am not a metalurgist)Most Lead free solders can be intercahngeable.The alloy created should be stable. The issue is if you add Leaded solder to the joint. Obviously, research and testing is still pending. cal

lead-free stencil printing

Electronics Forum | Fri Sep 26 10:47:56 EDT 2003 | davef

The metals used to replace the lead weigh less than the lead.

lead-free mixed technolgy

Electronics Forum | Fri Nov 07 10:01:05 EST 2003 | CAL

thanks cal

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