749069-2

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D-Sub connectors are a type of plug and socket interfaces commonly used in telecommunications and computer applications. The 749069-2 is a high-performance version of the D-Sub connector, with a robust and compact design suitable for applications in rugged, harsh environments. It features a non-magnetic stainless steel shell with a nickel-plated finish to provide superior shielding and electromagnetic interference (EMI) protection. The connector has a 9-pin configuration, with an offset parallel design for improved signal tracing, interconnection, and usability.

The 749069-2 is typically used in applications where there are potential interference sources, such as industrial automation installations, robotics, or any other environment where a secure and reliable connection is necessary. It is also well-suited for Ethernet, serial, and other high-speed data transmission applications where a lesser-grade connector would be prone to signal loss. Additionally, the connector supports hot-plugging, meaning that devices can be connected and removed from a power supply without disrupting other connected equipment.

The 749069-2 D-Sub connector is designed with a high-reliability, two-position, terminal-lock system, which includes a mechanical interlock between the plug and socket to ensure that the system locks into place and maintains signal accuracy. The contact points are recessed, which further prevents signal degradation, whereas the circular latching of the shell provides a secure connection against vibration and shock. The metal crimp contact features UNISERT™ technology to ensure reliable, repeatable terminations. The contact has an electrical current rating of up to 3.0A and a voltage rating of up to 600V.

The contact resistance of the 749069-2 is designed to meet the UL 60950-1 standard for low voltage safety, maintaining a maximum initial contact resistance of 8 milliohms and a minimum insulation resistance of 1000 megohms with a UL 94V-2 flammability rating. This ensures a stable, secure connection, free from electromagnetic interference, and is designed to last for a lifetime of reliable performance. The connectors can be used in both signal and power applications, and are also suitable for use with shielded cables.

The working principle of the 749069-2 D-Sub connector is simple. When the plug and socket are mated, the pin contacts the socket contacts, forming an electrical connection. The mechanical lock between the plug and socket holds them in place with the offset parallel design, and the recessed contact points ensure a secure connection and reduce signal degradation.

The 749069-2 D-Sub connector is an ideal solution for data transmission and low voltage safety applications that require a secure, reliable connection in challenging operating conditions. The robust design and offset parallel configuration provide superior shielding and EMI protection, while the terminal-lock and UNISERT™ technologies ensure dependable, repeatable terminations. This makes the 749069-2 both a cost-effective and highly reliable solution for a number of high-performance applications.

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