Optical wafer inspection equipment

DI2800

Hitachi's dark-field wafer defect inspection system with illumination and detection optics optimized by scattering intensity simulation.

Maker: Hitachi High-Tech · Official product page

Specifications


Inspection methodDark field
Target processesPatterned wafers of 200 mm and smaller
Key feature0.1 µm sensitivity, 40 wafers per hour or more
Main applications100% inspection of IoT and automotive devices

Specifications as published by the maker. See the sources below.

Overview


DI2800 is Hitachi High-Tech's dark-field wafer defect inspection system. It detects and controls defects on patterned samples in the manufacture of what Hitachi calls G&C (green and communication) devices made on φ100 to 200 mm wafers, such as SAW/BAW filters, MEMS and sensors, and power and analog devices.

Scattering intensity simulation optimizes the illumination and detection optics, giving high-sensitivity inspection of defects on patterned wafers in process. Detection sensitivity is equivalent to a 0.1 µm standard particle on a mirror wafer.

It can inspect very small chips of 0.3 mm square, and optimized inspection sequences process 40 or more 200 mm wafers per hour for defect inspection. It handles patterned and unpatterned φ100/150/200 mm wafers and is used for line process monitoring and screening of good devices.

Key features


Applications


More from Hitachi High-Tech


Sources


  1. Hitachi High-Tech: DI2800 product page

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Last updated: October 23, 2026