Dummy Wafer

About Dummy Wafer

Dummy wafers (also called as test wafers) are wafers mainly used for experiment and test and being different from general wafers for product.
Accordingly, reclaimed wafers are mostly applied as dummy wafers (test wafers).

Dummy wafers are often used in a production device to improve safety in the beginning of production process and are used for delivery check and evaluation of process form.
As dummy wafers are often used for experiment and test, size and thickness thereof are important factors in most occasions.

In each process, film thickness, pressure resistance, reflection index and presence of pinball are measured using dummy wafers (test wafers). Also, dummy wafers (test wafers) are used for measurement of pattern size, check of defect and so on in lithography.

E&M Dummy Wafer's feature

We have a large variety of dummy wafers. Especially, we can meet all your needs regarding 6inch or smaller sizes. The dummy wafers provided by us are guaranteed in quality for delivery check and process check, which can satisfy your request.

  • Size:2inch ~ 12inch