The application of diamond in aging testing equipment

Aging testing is the process of applying stress to chips, accelerating the exposure of potential faults in early failed chips, and eliminating defective chips through testing to ensure that qualified chips have high reliability.

In actual production, there are some factors that affect the reliability of aging testing, and the goal is to reduce their interference with aging testing and ensure the accuracy and reliability of measurement results. In a transient testing form similar to thermal dissipation, the product end increases the current by the step value, while measuring its corresponding optical power, voltage and other parameters at each step. Due to the continuous increase of current, the thermal power consumption of the product is also constantly increasing. Logically, the temperature is constantly increasing. The test hopes that the temperature of the product at each intermediate current point is a constant value (usually 25 ℃).

To better ensure temperature stability:On the one hand, it is necessary to improve the thermal conductivity of the fixture base and its contact with the chip, so that the temperature of the heating table can be quickly transmitted to the chip; On the other hand, it is necessary to reduce opportunities for contact with the external environment and avoid heat exchange with the external environment.

Diamond has excellent properties such as wide bandgap, high thermal conductivity, high breakdown field strength, high carrier mobility, high temperature resistance, acid and alkali resistance, corrosion resistance, and radiation resistance. It is currently one of the most promising semiconductor materials, and its classic application scenario is in the field of thermal management. By utilizing the high thermal conductivity of diamond, the temperature thermal equilibrium time during the testing process can be shortened, and the efficiency of aging testing can be improved.

CSMH focuses on the production and research of diamond materials, and innovatively applies diamond heat sink to chip aging testing machines, greatly improving temperature stability during the aging testing process. We can provide professional customized products, including diamond wafer, diamond heat sink, diamond heat sink+copper seats, etc. Please feel free to inquire.