Patent ID: 7863924

Claim:
A system for testing a microfeature device including a substrate and an array of conductive elements on the substrate, the system comprising: a test assembly including a test tray insert and a device carrier carried by the test tray insert, the device carrier being configured to receive a device for testing; a test contact assembly having test contacts, the individual test contacts being positioned to selectively contact corresponding conductive elements on the device being tested; and a pusher assembly configured to move a device being tested from a first position in the device carrier in which the conductive elements are out of contact with the corresponding test contacts and a second position in which at least a portion of the test contacts are engaged with corresponding conductive elements, the pusher assembly including a plate having a first side and a second side opposite the first side; an engagement assembly removably coupled to the second side of the plate and positioned to contact the device being tested; an urging member proximate the first side of the plate, the urging member being configured to move the engagement assembly toward the device; and a heat transfer unit carried by the first side of the plate.