51939-321LF

Backplane Connectors - Specialized

The 51939-321LF from ITT Cannon is an example of a specialized backplane connector. It is a 15-position black shell connector designed primarily for use in high reliability rack and panel applications in harsh environments.

This 51939-321LF connector is RoHS compliant and has an operating temperature range of -40° to + 105° C. It has a thermoplastic shell and an integrated EMI/RFI shielding for protection against EMI/RFI interference. Its insulation crimp is made of 42 alloy aluminum with a bright nickel finish for superior wear and corrosion resistance. It is also rated to withstand up to 200 mating cycles without the need for special tools. The connector also has a polarization feature which allows it to be easily identified and mated.

The 51939-321LF connector has a unique two-piece design which enables its contact pins to be easily replaced. The contacts are shielded with a nickel-plated copper alloy shield which provides additional protection against electrical noise and prevents voltage loss. Its backplane port also has a -0.8x2.54mm pitch, enabling it to connect to a wide variety of backplane board levels.

With regards to its application field, the 51939-321LF is most often used in datacom, telecom, and networking applications. It can be used in high speed digital systems, storage systems, switch boards, and server systems. In addition, it can also be used in the automotive, medical, and industrial automation industries. It is also ideal for applications requiring high reliability and robustness.

The 51939-321LF\'s working principle is centered around its two-piece design. Its contacts are made of beryllium-copper alloy with a 30u" gold finish over 50u" nickel and are terminated with standard crimping tools. The shield is made of tin-plated copper alloy and allows for improved EMI/RFI protection. Its precise mating geometry reduces contact resistance and ensures reliable performance. Additionally, its immunity to radial shock prevents accidental contact damage.

In conclusion, the 51939-321LF is a specialized backplane connector from ITT Cannon which offers a unique two-piece design and enhanced EMI/RFI protection. It is ideal for applications requiring high reliability and robustness, and is most often used in datacom, telecom, and networking applications. Its contacts are terminated with standard crimping tools and its precise mating geometry reduces contact resistance and ensures reliable performance.