The plastic high-low temperature impact test chamber is designed for ease of use, yet like any electronic equipment, it may occasionally experience malfunctions. One common issue in such devices is the phenomenon of fault migration, which typically falls into three main categories: ion migration, electromigration, and stress migration.
This test chamber is widely used in quality control and reliability testing. Its key functions include automatic preheating, pre-cooling, and setting a starting point within a scheduled time. It can begin cycling or impact testing from either high or low temperatures, and it supports cycle number settings as well as automatic defrosting. The system features an automated, high-precision control loop, with all operations fully managed by a PLC (Programmable Logic Controller). Temperature control is highly accurate, using PID (Proportional-Integral-Derivative) algorithms for optimal performance.
Additionally, the air outlet and return air port are monitored by sensors, and the wind direction switching mechanism completes its action within 10 seconds. The thermal shock temperature recovery time is also controlled efficiently, typically within 5 minutes. This ensures consistent and reliable testing conditions.
In terms of failure phenomena, one common issue in plastic-sealed integrated circuits involves the corrosion of aluminum metal wires. These wires, which connect various components on a silicon wafer, are often made of aluminum due to its cost-effectiveness and ease of processing. However, during the plastic sealing process, moisture can penetrate through the epoxy resin, leading to corrosion of the aluminum lines. This can result in circuit failures and is a major concern in quality engineering.
Despite efforts to improve the reliability of these devices—such as using different types of epoxy materials, enhancing molding techniques, and applying non-reactive plastic films—the problem of corrosion in plastic-sealed aluminum interconnects remains a significant challenge, especially with the increasing miniaturization of semiconductor devices.
Dongguan Aisihao Instrument Equipment Co., Ltd. specializes in manufacturing a wide range of environmental testing equipment, including cold and hot temperature impact chambers, constant temperature and humidity test chambers, salt spray test chambers, and more. If you're looking for reliable and high-quality testing solutions, feel free to contact us for more information.
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