Multi-project wafer (MPW) runs: These are fabrication runs that occur roughly every two months with a design submission deadline specified in advance. Only a limited set of process options are available in MPW runs, which are designed to be compatible with other projects submitted in the same run. The capabilities available in the MPW runs are detailed for silicon and silicon nitride in the process specifications pages. Pros: - Lower price: Projects are batched together, spreading the processing costs across them. - Fast turnaround: The use of standard processes allows projects to be delivered on a fast and predictable timeline. - Consistency: Qualified processes are used in the MPW runs, delivering consistency between successive runs. Cons: - Lack of flexibility: Customizations such as multiple etch depths, custom metal levels, custom SOI thickness, etc., are not permitted in MPW runs. - Hard deadlines: Submissions are only accepted for the pre-determined run submission deadlines.
