Abstract:
An apparatus to test a semiconductive device includes a base plane that holds at least one heat-transfer fluid unit cell. The at least one heat-transfer fluid unit cell includes a fluid supply structure including a supply-orifice cross section as well as a fluid return structure including a return-orifice cross section. The supply-orifice cross section is greater than the return-orifice cross section. A die interface is also included to be a liquid-impermeable material.