Quality and Service Quality and Service

Quality and Service

Quality and Service

Reliability Terminology

1.What is Reliability

Reliability refers to the ability of the product to complete the specified function under the specified conditions and within the specified time;

 

All reliability items simulate the process of storage or use under different conditions after the product is manufactured.

 

2.Why to do Reliability

 

New product assessment: To prove that the currently designed of product has the ability to meet the specified service life;

 

Mass production monitoring: The process will not be very smooth all time in mass production, reliability monitoring can detect anomalies during mass production in time to ensure product quality.

 

Expected Life

 Consumer:≤5 years

 Industrial:5~10 years

 Automotive:>15 years

 

3.The Bathtub Curve for Failure Rate

 

Early Life

The early life failures are process related,  especially for Memory/Logic device, it’s a decreasing failure trend.

 

Useful Life

The useful life failures are random and low failures rate, it’s a constant failure trend. Most device worked on this area.

 

Wear-out

The wear-out failures are inherent of process. These failures would be due to oxide wear-out, Electron migration etc. It’s an increasing failure rate.