Electronics Forum | Mon May 12 13:55:19 EDT 2014 | hegemon
It sounds like a bit too much solder on the PWB, caused by too large a pad for the lead it will contain. In that case solder reduction is the way to move forward. What are the options there? 1. New stencil or stencils - (not desirable) 2. Increas
Electronics Forum | Wed May 14 18:22:07 EDT 2014 | hegemon
Dave is touching on one of those magical things that keeps us process engineers well paid and dancing (Well, some of us, lol). Heavy boards with light components. Solder Follows heat. Component heat up earlier. Repeat, Solder follows the heat. Care
Electronics Forum | Mon Feb 12 17:05:29 EST 2007 | Jose
Today is more complicate to find components with lead than with "lead free", and the, I think that you have very feww lead components. And, if don�t work on exceptionals companies, you MUST use LEAD FREE PASTE. In one case, or in the opposite, the re
Electronics Forum | Tue Jul 19 08:51:29 EDT 2005 | GS
any thanks Rob, te specimen label Anglia is some thing complete and very helpful example. Hope Comp Suppliers will take care about the needs of Users (mainly if they are small EMS). To know how the terminals/leads are metal finisched is important f
Electronics Forum | Fri Jun 24 17:08:13 EDT 2005 | franciscoioc
Hi Everyone, I need everybodys help on this one. We are a company that suppose to be exempt from the Lead-Free world and we were happy untill we find out alot of the Components manufacturers will change their parts to Lead-Free but not their part nu
Electronics Forum | Mon Jun 27 10:45:31 EDT 2005 | franciscoioc
Thank's for the information Bob. I have another question, at the moment my peak reflow is at 218c, this means I am above the 210c a lot of companies run off. If I am building boards using SN63/37 solder paste with lead on my process, and using lead f
Electronics Forum | Mon Jul 18 13:34:31 EDT 2005 | jzaccari
Francisco, You need to be concerned about "lead-free" BGAs. The SAC balls will not reflow at at standard tin-lead process temps. I have seen many examples where this has been a very big problem. In once case the BGAs just poped-off when the board was
Electronics Forum | Tue Feb 06 21:43:11 EST 2007 | Wayne
If it is instructed to ship lead free product to customer, then low temp lead free solder paste can be considered. For example, Viromet solder paste from Singapore Asahi (peak temp is between 220 to 225 degree C).
Electronics Forum | Thu Oct 04 16:00:01 EDT 2007 | hussman
Paint no-lead stuff green and carry a big stick.
Electronics Forum | Thu Aug 11 07:41:55 EDT 2005 | rsmith@z-mar.com
I do recommend dedicated tips and dedicated workstations. Make sure that your tips come in with no lead in the tinning. There is a new, green heat resistant table mat that is being used in the industry to identify lead free areas. If operators see gr
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