Our Test Engineers are the quality gate that every single Infineon chip has to pass. They guarantee that the customers' needs regarding quality and functionality are met. Our colleagues Amine El Younsi and Georg Eibl tell you more about their job in the interview below.
Overview: Tasks & Requirements
As a Test Engineer, you will make sure that products are of high quality and are successful in their markets – your role is pivotal to product development. You will develop and implement test procedures for products and processes so that a reliable assessment can be made of their functioning and safety. You will share the results of your failure analysis and concrete suggestions to solve the problems with the product team.
Your tasks consist of:
- Test development and engineering
- Developing and optimizing test programs and guaranteeing their stability
- Creating analysis programs and conducting measurements for failure analysis and to increase yield
- Transferring knowledge to the shop floor
You have the following skills:
- College degree in electronics, information technology, micro system technology, physics or a similar field
- Good knowledge of metrology and programming
- Fluent in German and English
Amine El Younsi and Georg Eibl, Test Engineering in Regensburg
We build the quality gate that every chip has to pass. This ensures that the chips work the way they’re supposed to.
We use tests to guarantee that the customer requirements for quality and functionality are met. This is done at two stages in the process. Firstly, after the first major production phase, meaning at the wafer level. And secondly, on the backend after the chips have been packaged.
My job is to have an external company manufacture the specific testing hardware: the “probe card”. To do so, I have to design electrical circuitries on the computers beforehand. After my review, the probe card eventually goes into the test system together with the test program I developed. Then we make sure that the planned test procedure really tests everything the way it’s supposed to. During this process, we coordinate closely with the product developer.
With the wafer test, we have to find a balance between the competing demands of time and quality. We need to develop a test program that tests at a high quality as quickly as possible. We design the test in such a way that it is time-saving and thereby, cost effective. Additionally, we need to ensure the availability of testing facilities.
We need to make compromises and cooperate well in a team. Every day we make decisions that require multidisciplinary thinking and demand prioritization. Since several colleagues worldwide are usually working on the same test platform, communication skills and working transparently are obviously important.
The magic moment in the life of a Test Engineer is when the first silicon passes the testing process developed for it. The first silicon is the first finished wafer material for new products. That’s when we hold our breath. Then when everything works the way it’s supposed to, we know for a fact that we’ve done a good job.
Naturally, it’s our goal to make sure everything works right the first time. However, having to make readjustments is part of our daily work routine. Our work really starts, once problems arise. So for instance, when a newly developed test program isn’t running right. Solving problems makes it exciting and it’s part of what we do.
It’s frustrating when work procedures are sometimes not done as agreed because of poor planning or communication in international teams.
I used to work in Application and Test Engineering at a competitor company. What I like about Test Engineering is balancing the various requirements for quality, costs, and product specifications.
I studied micro-system technology. What I find appealing about Test Engineering are the practical components: I’m on-site at the plants and enjoy working with the test systems , and I like the insights into manufacturing.
By the way, both had wanted to be pilots when they were kids – now they make sure our products lift off safely on their flight to the customer.