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<p>are a number of techniques for reflowing solder. One is to use <a href="page.php?w=infrared">infrared</a> lamps; this is called infrared reflow. Another is to use a hot gas <a href="page.php?w=convection">convection</a>. Another technology that is becoming popular again is special <a href="page.php?w=fluorocarbon">fluorocarbon</a> liquids with high boiling points which use a method called vapor phase reflow. Due to environmental concerns, this method was falling out of favor until lead-free legislation was introduced which requires tighter controls</p><p>
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