Electronics Forum | Tue Jul 13 10:31:16 EDT 2004 | davef
No, experience, but a couple of comments are: * Your 2mm leads are proabably not ment to be trimmed. Consider returning these and buying components with shorter leads. [We know, we know. You have to build this piece of junk right NOW!!!! B-)] * I
Electronics Forum | Mon Dec 12 21:38:05 EST 2005 | davef
Effect of lead on bismuth solders * Lead from hot air leveling (HAL) coatings can diffuse through the grain boundaries of the alloy. * Lead can form a eutectic composition of Bi52Pb32Sn16 in the grain boundaries. * Melting point of this eutectic all
Electronics Forum | Tue Dec 13 14:55:12 EST 2005 | muse95
Your response is from the point of view of using a Bismuth solder with Pb plated leads. Samir's point of view is from Bismuth in the plating on the leads being used with a Pb solder. There is a very large difference in the amount of Bi that will en
Electronics Forum | Fri Jun 18 20:29:39 EDT 2004 | Ken
The problem is lead enrichment regions forming in the hottest part of the joint. The lead pool is the weakest part of the (SMT) joint. In TH interconnects hot tear or pad lift can result. I have recently seen this first hand.
Electronics Forum | Tue Aug 31 17:36:36 EDT 2004 | davef
NO-LEAD COMPONENTS WITH LEAD SOLDER ISSUE: We agree with Russ. We've dicussed this several times on SMTnet. For instance, look here http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=25394 LEAD COMPONENTS WITH NO-LEAD SOLDER ISSUE: We disa
Electronics Forum | Tue Feb 19 14:02:56 EST 2008 | scooter
I have done this in a past life. In my mind this is a step backwards. If all of your parts are placed by hand it will work.You will need to cut at the top of the solder to keep the leads form bending If any parts are auto inserted you will need to c
Electronics Forum | Tue Jan 29 20:14:54 EST 2002 | davef
Please help us understand your situation better by describing the following: * Component [ie, PTH/SMT, type of component, lead finish you expected/ received, etc.] * Board type [ie, type of board FR-4/CEM/ceramic, etc.] * Solderability protection on
Electronics Forum | Fri Oct 23 16:19:14 EDT 1998 | Dave f
| I have been requested to explore the possibilities of using an inline lead trimmer in our manufacturing process. I have a few questions I need answered. | 1. Can anyone recommend a good model of trimmer for in-line use? | 2. We do double sided SMT,
Electronics Forum | Sat Feb 19 05:34:45 EST 2000 | Dane Stokes
Also Jan, Don't you have to send your components through a filter program when transfering from a 4796 to a 4791 or vice versa. I know you have to do this when transfering a 4790 program to a 4791 because the speed data does not transfer correctly. I
Electronics Forum | Sat Feb 19 05:34:45 EST 2000 | Dane Stokes
Also Jan, Don't you have to send your components through a filter program when transfering from a 4796 to a 4791 or vice versa. I know you have to do this when transfering a 4790 program to a 4791 because the speed data does not transfer correctly. I
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