概要（Overview）

The PAS 5500/250C is an i-line stepper specified at a resolution of 0.30 µm. Focal plane deviation, astigmatism, and distortion have all been improved without compromising overlay performance, which is now specified at < 45 nm. Leadership productivity is maintained at more than 93 wph (ATP settings). The PAS 5500/250C uses an AERIAL™ illuminator, which provides flexible and automated NA/Sigma combinations in both conventional and off-axis illumination modes while maintaining high intensities to enable economical mass production of leading-edge devices.