If the package type is not available, we will use our Master Component Package Categorization database to complete them. It describes the physical dimensions and standardized package information for PCB Assembly processes. Our labor estimate is based on these PCB assembly processes.
The Master Component Package Categorization database includes detailed attention to "Thermally Enhanced Package (TEP)" and "Bottom Terminated Components (BTC)". Both of these package types needs tight manufacturing process controls to yield expected long term reliability.