Given the specifications of J1 in your project, which is a Würth Elektrik connector with part number 691137710002, it's clear you're using a two-pin connector. This part is likely used for power input or output connections given its role in your circuit, but without specifics on its exact application (e.g., current rating, mounting type, specific application requirements), I'll provide a general recommendation based on common requirements for such connectors.

A suitable replacement should maintain the key features of the original part, such as the pin count, pitch, and current rating, while also fitting into your project's design constraints like physical size and mounting type.

Please ensure that this recommendation fits within the electrical and mechanical constraints of your project, such as power requirements, space on the PCB, and compatibility with the wires or connectors you plan to use. If you have more specific requirements or constraints, feel free to provide them for a more tailored recommendation.