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Tech Head - The Technology Section
The Work Bench and Soldering Station
Tin Whiskers
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<blockquote data-quote="Llew" data-source="post: 504321" data-attributes="member: 175007"><p>Using lead-free solder causes <em>tin whiskers</em>to form on circuit boards and components. Pure tin-plated components also cause the whiskers to form over time -</p><p></p><p>_http://nepp.nasa.gov/WHISKER/photos/index.html</p><p></p><p>Tin/lead solder is now banned for sale in Europe because of damage to the environment (for instance Maplin only have the lead-free solder now). Lead-free solder needs a greater melting point to solder effectively, which can damage the components you are using it on. Luckily I have enough of the old stuff for my projects.</p><p></p><p>Not sure if equipment manufactured in the Asia have to use lead-free, but apparently baffling faults in PC motherboards etc. could be put down to the whisker effect.</p><p></p><p>In 1998 the failure of the Galaxy IV satellite was diagnosed as being caused by the dreaded whiskers.</p><p></p><p>Llew</p></blockquote><p></p>
[QUOTE="Llew, post: 504321, member: 175007"] Using lead-free solder causes [I]tin whiskers[/I]to form on circuit boards and components. Pure tin-plated components also cause the whiskers to form over time - _http://nepp.nasa.gov/WHISKER/photos/index.html Tin/lead solder is now banned for sale in Europe because of damage to the environment (for instance Maplin only have the lead-free solder now). Lead-free solder needs a greater melting point to solder effectively, which can damage the components you are using it on. Luckily I have enough of the old stuff for my projects. Not sure if equipment manufactured in the Asia have to use lead-free, but apparently baffling faults in PC motherboards etc. could be put down to the whisker effect. In 1998 the failure of the Galaxy IV satellite was diagnosed as being caused by the dreaded whiskers. Llew [/QUOTE]
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