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???
10/14/05 13:13
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#102414 - But...
Responding to: ???'s previous message
Erik said:
I have no doubt that eventually the lead free process will wotk just as well as what we use today, but I do agree that it is tough to work during the transition.

Today, they HAVE problems. Lead time and lead temperature must be increased to get reliable solder points. But any increase in heat stress will heavily degrade reliability of SMD-parts. This IS a time bomb, unless manufacturers of SMD components increase heat resistance of their parts. But this will need many years or development and testing. Recall how many years it took to get SMD-soldering become reliable...

Kai

List of 38 messages in thread
TopicAuthorDate
Lead free solder a pain in the bum?            01/01/70 00:00      
   Mixing            01/01/70 00:00      
      visual clues            01/01/70 00:00      
         visual inspection            01/01/70 00:00      
            Then why Lead Free?            01/01/70 00:00      
               better with 63/ 37            01/01/70 00:00      
                  hmmm            01/01/70 00:00      
                  63/37 Solder.            01/01/70 00:00      
                     State change            01/01/70 00:00      
               regulation            01/01/70 00:00      
                  RoHS            01/01/70 00:00      
      Lead-free + Leaded            01/01/70 00:00      
         more info            01/01/70 00:00      
   It's a disaster to forbid lead in solder            01/01/70 00:00      
      Interesting statistic            01/01/70 00:00      
         Lead in batteries, lead in electronics.            01/01/70 00:00      
            SIlicone            01/01/70 00:00      
      Exemptions            01/01/70 00:00      
         Aging            01/01/70 00:00      
            worse            01/01/70 00:00      
               where is the difference            01/01/70 00:00      
                  no difference.            01/01/70 00:00      
   thanks to the engineerinmg profession, a            01/01/70 00:00      
      But...            01/01/70 00:00      
         lead-free solder            01/01/70 00:00      
            carts and horses            01/01/70 00:00      
               Of course, but...            01/01/70 00:00      
         another time bomb            01/01/70 00:00      
            badly soldered?            01/01/70 00:00      
               tin disease            01/01/70 00:00      
   An additional, overlooked problem            01/01/70 00:00      
      Law of Preservation of Filth            01/01/70 00:00      
         PErhaps            01/01/70 00:00      
            Myth            01/01/70 00:00      
               "man does not pollute, men do"            01/01/70 00:00      
                  Oh yea ?            01/01/70 00:00      
                     polution            01/01/70 00:00      
            Far more serious issue here            01/01/70 00:00      

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