No models are available for download for JLM.1S.250.CTAD52. You can still request or build the schematic symbol and PCB footprint by using the respective build or request forms on this page.
To find more CAD model downloads similar to this part, try a partial part number search, like JLM.1,
or try a keyword search, such as RF Twinax/Triax/Quadax Connectors