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topic 8936

DI water resistivity


What: DI water resistivity for wafer wash/saw

When: during wash or saw

Where: semiconductor industry

Why: still confused about the right resistivity value some says below 1 Mohm and others say around 18meg.

bryan kendrick
- Philippines


I'm also new in the semiconductor industry and am assigned at wafer saw. What I know is that the 18 M-ohm requirement is a measure of the purity of the DI water to be used during saw and/or wash. As for the 1 M-ohm, an additional equipment is set-up to reduce the resistivity against ESD and this is kept below 1 M-ohm.

Olan Eon
- Philippines

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