Semiconductor Testing Methods

Introduction to Semiconductor Testing Methods

Test activation can be defined as the process of testing available frequencies and comparing them with standard frequencies to determine semiconductor devices’ quality. Considering the fact semiconductors are the foundation of today’s electronics it is paramount that they deliver the desired reliability and performance. Destructive and non-destructive conduction tests are employed to classify the electrical characteristics, thermal efficiency, and functional capability of products during various production phases. These tests are useful in determining whether or not a device is likely to contain a defect and whether or not the devices produced meet the required standards before they are used in consumer electronics.

Instrumentation

Measures for testing the semiconductor involve the use of equipment such as the wafer probing systems, and the automatic test equipment (ATEs) for testing the performances of the device. Mechanical and electrical measurements in the form of scanning electron microscopes (SEM) and parametric testers are used to declare the rigidity and electrical characteristics respectively.

Strengths and Limitations of Semiconductor Testing Methods

Strengths 

• Zero tolerance for imperfections with high accuracy in identifying them as well as guaranteeing the proper functioning of the device.
• The parameters that can be tested include electrical and physical testing.
• Appropriate for large-scale production where there is use of automated systems.
• Has the advantage of identifying faults at their early stages leading to a general reduction of total costs.

Limitations 

• Lack of access to highly developed testing methods due to high initial investments
• Advanced testing procedures that call for extensive skill
• Sometimes cumbersome particularly when working on complex designs of semiconductor products.
• Risk of damaging every day highly susceptible parts while testing

Techniques related to Semiconductor Testing Methods

Semiconductor testing methods are related to other similar techniques including Atomic Force Microscopy (AFM) Testing, DC parametric testing, and AC parametric testing.