Patent ID: 7554350

Claim:
A burn-in system for conducting a burn-in test on a plurality of devices under test mounted on a burn-in board, comprising: heating blocks having heating device configured to heat the devices; and cooling blocks formed with channels able to carry a coolant for cooling the devices under test, wherein each of the cooling blocks is formed with a first accommodating space for accommodating one heating block, each of the heating blocks is accommodated in corresponding the first accommodating space with a layer of air formed between the heating block and the cooling block so as to be insulated from the cooling block, the each heating block is supported and mechanically floating with respect to the cooling block, a front end face of the heating block and a front end face of the cooling block are able to come in directly contact with the device under test, and when the heating block is not in contact with a device under test, the front end face of the heating block sticks out relative to the front end face of the cooling block.