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Semi automatic Expander

The semi-automatic expander SEF SEF 200 & 300 was developed to expand "stealth lasered wafer" up to 300mm wafer size. Due to the expansion of the film a visible spacing from chip to chip of about 50 mu can be reached.

With the SEF 200 & SEF 300, 8" wafer respectively 300mm wafer can be isolated and expanded without the need of large frames. This saves film and is a great advantage. This process is patented.

Condition for a homogeneous expansion of the wafer is a singulation of all diced lines on the wafer. The SEF 200 as well as the SEF 300 is equipped with a blow cylinder that allows for separation of chips of up to 2mm x 2mm chip.