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3.1

Low Definition

3.2

Wafer Identification

Code1

ReferenceDie

Code2

Notch

Low Definition

A definite quantity of wafers from the same diffusion batch produced under presumed uniform conditions.

Occasionally a lot equals 25 wafers.

Each wafer is marked with laser marking to identify the wafer. The wafer map file is linked to the wafer id.

There are 2 marks on the wafer.

The following figure shows the position of the wafer identification codes. The reference die is the black

marked die in the corner at the right lower position of the wafer.

Figure 3-1. Position of Wafer Identification Code

18

Shipping, Packing and Further Handling

SCBU047 (11-09-21-064) – October 2007

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