Patent ID: 7129732
Filing Date: 2006-10-31
Classification: G01R

Abstract:
1. An apparatus for testing at least one substrate, said apparatus comprising: a housing including first and second chambers, said second chamber located above said first chamber and adapted for having cooling fluid pass there-through; at least one test fixture positioned substantially within said first chamber and adapted for holding at least one test substrate having a plurality of conductive thru-holes therein within said first chamber, said at least one test fixture adapted for being electrically coupled to said at least one test substrate within said first chamber; cooling structure for directing said cooling fluid from said second chamber onto said at least one test fixture and said at least one test substrate when said at least one test fixture is holding said at least one test substrate so as to cool said at least one substrate to a first test temperature lower than normal ambient room temperature within said first chamber, said cooling structure including a fan located within said first chamber for drawing said cooling fluid from said second chamber and onto said at least one test fixture and said at least one test substrate; electrical supply means for supplying electrical current to said test fixture and said plurality of thru-holes within said at least one test substrate to heat said test substrate to a second test temperature greater than said first test temperature; and a test system for testing said at least one test substrate within said at least one test fixture when said electrical supply means supplies said electrical current to said at least one test fixture and said plurality of thru-holes within said at least one test substrate.