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class="container clearfix"> <div class="postcontent nobottommargin"> <div class="single-post nobottommargin"> <div class="entry clearfix"> <ol class="breadcrumb"> <li><a href="index.html">Home</a></li> <li><a href="tungsten-copper-laser-heat-sink.html">Tungsten Copper Laser Heat Sink</a></li> </ol> <hr> <div class="entry-title"> <h1>Tungsten Copper Laser Heat Sink</h1> </div> <figure class="entry-image"> <div class="image-left"><img src="pic/tungsten-copper-laser-heat-sink.jpg" alt="tungsten copper laser heat sink" title="tungsten copper laser heat sink" /></div> <div class="image-right"><img src="pic/tungsten-copper-laser-heat-sink-1.jpg" alt="tungsten copper laser heat sink" title="tungsten copper laser heat sink" /> <a href="#" data-scrollto="#feedback" class="button button-rounded button-reveal button-large tright"><i class="icon-angle-right"></i><span>Enquiry & Order</span></a></div> </figure> <div class="entry-content"> <h2>Introduction</h2> <p>Tungsten copper heat laser sink is an integrated circuit chip having a certain function is placed in a container with suitable housing, the chip to provide a stable working environment, protect the chip from less affected by the external environment, so that an integrated circuit having a stable normal function. At the same time the heat sink is chip-chip output, input connecting means outwardly transition, together with the chip to form a complete whole. The heat sink sheet material is required to have a certain degree of mechanical strength, good electrical properties, thermal properties and chemical stability, and according to different categories of integrated circuits and the use of premises, the choice of different package structures and materials.</p> <h2>Properties</h2> <p>Tungsten copper laser heat sink combines the advantages of tungsten and copper, both having low expansion characteristics of tungsten, but also has high thermal conductivity properties of copper, its thermal expansion coefficient and thermal conductivity can be varied by adjusting the tungsten copper component, while and coefficient of thermal expansion of silicon, gallium arsenide, and the ceramic material matches.</p> <h2>Technical Specifications</h2> <div class="table-responsive"><p><table> <tr> <td>Grade</td> <td>Copper(wt.%)</td> <td>Tungsten(wt.%)</td> <td> Density(g/cm³)</td> <td> Conductivity (%IACS)</td> <td> Thermal Conductivity (W/m²K)</td> <td> CTE(10-6/K)</td> </tr> <tr> <td>70W30Cu</td> <td>30±2</td> <td>Balance</td> <td>13.80</td> <td>42</td> <td>~240</td> <td>~9.7</td> </tr> <tr> <td>75W25Cu</td> <td>25±2</td> <td valign="top">Balance</td> <td>14.50</td> <td>38</td> <td>200~230</td> <td> 9.0~9.5</td> </tr> <tr> <td>80W20Cu</td> <td>20±2</td> <td valign="top">Balance</td> <td>15.20</td> <td>34</td> <td>190~210</td> <td> 8.0~8.5</td> </tr> <tr> <td>85W15Cu</td> <td>15±2</td> <td valign="top">Balance</td> <td>16.10</td> <td>30</td> <td>180~200</td> <td>7.0~7.5</td> </tr> <tr> <td>90W10Cu</td> <td>10±2</td> <td valign="top">Balance</td> <td>16.80</td> <td>28</td> <td>160~180</td> <td>6.3~6.8</td> </tr> </table></p></DIV> <div class="clear"></div> </div> <div id="respond" class="clearfix"> <h4 id="feedback">Enquiry & Order</h4> <form class="clearfix" action="email.php" method="post" id="commentform"> <div class="col_half product"> <select class="sm-form-control" disabled="disabled" name="product"> <option>Products:Tungsten 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