57F-40500-20N – DDK

The DDK 57F-40500-20N is a 57-series, 50-position, female receptacle connector designed for cable mounting. It features a 2.54mm pitch and utilizes a dual-row contact arrangement. The connector body is constructed from a UL94V-0 rated thermoplastic material, ensuring flame retardancy. Contacts are typically phosphor bronze with gold plating over nickel underplating, providing reliable electrical conductivity and corrosion resistance. Notably, this specific part number (20N suffix) indicates the absence of an integrated strain relief mechanism. This design necessitates the implementation of external strain relief measures during cable assembly to prevent stress on the solder joints and ensure long-term electrical integrity of the connection, particularly in applications subject to vibration or mechanical stress. The connector is intended for use with discrete wiring or ribbon cable, terminated via soldering to the connector’s pins.