Overview

The PAS 5500/300C is a DUV wafer stepper made by ASML. It is part of the PAS 5500 platform, which has been a ground-breaking lithography platform for ASML and has been in use for over 30 years. The PAS 5500/300C is a step and repeat exposure system with laser-controlled stage motion. It uses a Zeiss lens with a variable N.A. of 0.63 - 0.40 and a DUV (248 nm) exposure wavelength. It has programmable annular illumination modes and a field size of 22 x 22 mm. It also has 3D-Align backside alignment.