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Deployment</a></td> </tr> <tr> <td height="20"><a href="http://store.aciusa.org" class="nav">Electronics Training</a></td> </tr> <tr> <td height="20"><a href="http://www.aciusa.org/links/links_equip.htm" target="_blank" class="nav">Demonstration Factory</a></td> </tr> <tr> <td height="20"><a href="http://store.aciusa.org" class="nav">Technical Publications</a></td> </tr> <tr> <td height="20"><a href="http://www.empf.org/mis/partners.html"class="nav">Partnerships</a></td> </tr> <tr> <td height="20"><a href="http://www.empf.org/empfasis/index.html" class="nav">EMPFasis</a></td> </tr> </table></td> <td width="100%" height="50%" rowspan="2" align="left" valign="top"><!-- InstanceBeginEditable name="Page Body" --> <table width="100%" height="100%" border="0" cellpadding="5" cellspacing="0"> <tr> <td width="100%" height="397" bgcolor="#FFFFFF" valign="top"> <div align="center" style="margin: 20px" > <span class="xbig">Automation Improves Overall LASS Yield and Reduces Final Cost</span> <P align=left><span class="big style1"><strong><a href="../pdfs/lass.pdf" target="_blank"><img src="../images/pdf.gif" alt="1" width="144" height="42" border="0" align="right"></a></strong></span> S2173  Manufacturing of Light Activated Semiconductor Switches Phase 3<br /> PERIOD OF PERFORMANCE: January 2007 to September 2009</P> <p align=left><b>Objective</b></p> <p align=left>Advanced weapons and defense systems for meeting mission requirements for lethality and survivability require the use of high power, very fast switching (high dI/dt) switches that are cost-effective to manufacture. Gas and vacuum switches have the potential to meet the performance requirements, but their reliability over repeated operation and cost of ownership preclude their use. The logical alternative to meet these demanding requirements is the use of solid-state switches, since their reliability and lifetime are much greater than gas or vacuum switches. However, existing solid-state switches do not simultaneously meet the high current and high dI/dt requirements.</p> <p align=left>The Light Activated Semiconductor Switches (LASS) project developed a manufacturing supplier of solid state switches that met DOD requirements for a high current, high dI/dt switch. This project established a manufacturing line to provide LASS switches for military and commercial applications. The reliability data obtained during this project demonstrated that LASS has achieved TRL5. This project has addressed the following areas: (1) development of lower cost silicon doping processes to improve the lifetime and uniformity of high power silicon devices; (2) manufacturing process development for high voltage devices; (3) packaging of high power, light activated thyristors; (4) development of a fiber optic coupled laser light source; (5) integration and testing of the laser light source; and (6) integration and testing of the LASS thyristor package and integrated laser light source.</p> <p align=left><b>Payoff</b></p> <p align=left>The demonstrated benefits of this project were that a manual manufacturing operation was converted into an automated manufacturing facility that is capable of producing a significantly higher volume of LASS switches with a much improved process yield. Costs have been significantly lower, and a savings of $20K per switch is expected with an initial production of 300 switches planned. The total cost reduction is $6M.</p> <p align=left><b>Implementation</b></p> <p align=left>Phase 3 of this project has continued to optimize the processing, packaging, and manufacturing automation to improve overall LASS yield and reduce the final cost. The ManTech project has developed a manufacturing line at OptiSwitch Technology Corporation (OTC) that is capable of providing a sufficient number of LASS devices for DOD needs. Environmental testing has been completed on all major components of the Light Activated Semiconductor Switch to determine how well they perform in a relevant environment. The transition event for this project, the demonstration that the LASS met the TRL5 requirements, has been completed. Implementation will be accomplished by qualifying the Light Activated Semiconductor Switch in the test bed of a DOD mission critical application. The project is currently targeting implementation on later flights of the CVN 78 Class.</p> <br /><br /><br /> </div> </td> </tr> </table> <!-- InstanceEndEditable --></td> </tr> <tr align="left"> <td height="51" valign="top"><table width="200" border="0" cellpadding="1" bordercolor="#003366" bgcolor="#003366"> <tr> <td bgcolor="#003366"><p align="center"><img src="http://www.empf.org/images/shim.gif" width="200"> </td> </tr> </table></td> </tr> <tr> <td height="2%" colspan="2">&nbsp;</td> </tr> </table> <table width="100%" border="0" align="center"> <tr> <td><div align="left"><a href="http://www.onr.navy.mil/"><img src="http://www.empf.org/images/onrlogo.gif" alt="The Office of Naval Research" width="144" height="66" border="0"></a></div></td> <td><div align="right"><a href="http://www.onr.navy.mil/Science-Technology/Directorates/Transition/Manufacturing-ManTech.aspx"><img src="http://www.empf.org/images/mantech.gif" alt="Navy Mantech" width="144" height="42" border="0"></a></div></td> </tr> </table> <table width="100%" border="0" align="center"> <tr> <td width="84%" class="small"> ACI Technologies, Inc. - - One International Plaza - Suite 600 -- Philadelphia, PA 19113 - - <a href="http://www.aciusa.org" target="_blank">www.aciusa.org</a> - - (610)362-1200</td> <td width="16%" class="small"><div align="right"><a href="http://www.empf.org/sitemap.htm">[sitemap]</a></div></td> </tr> </table> <map name="Map"> <area shape="rect" coords="62,43,123,77" href="http://www.aciusa.org" target="_blank" alt="ACI Technologies, Inc. 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