91910-21521

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Rectangular connectors are a type of data connection components designed to provide high electrical conductivity of signals and power between printed circuit boards (PCBs). They are mainly used in the aerospace, military, telecommunications, and other high-reliability applications. 91910-21521 is a rectangular connector widely used in aerospace and other high-reliability applications. It is a high-density, edge-type connector with mezzanine card capabilities. It has a wide range of application fields and a relatively simple working principle.

Application Field

The 91910-21521 connector offers an economical and reliable solution for data transmission in a wide range of application fields. Its long life and high reliability, along with low insertion and extraction forces, make it ideal for high-reliability applications in aviation, military, aerospace, and telecommunications. It is widely used in multi-port connectors, mainframe bus cards, desktop storage devices, and signal/power distribution in industrial automation equipment. In addition, it can also be used in HPC applications, power connectors, as well as high-speed/high-bandwidth embedded edge connectors.

Working Principle

The 91910-21521 connector has a relatively simple working principle. It consists of a PCB with pin holes in the center and two rows of pins on either side, creating four “pinfields”. When two mating connectors are pushed together, the pins in the pinfields on each side of the connector align and make electrical contact. This allows for the transmission of signals and power between the two connected components. To ensure tight connection and optimize electrical contact, the connector is secured with a metal E-ring. As the pins are pressed and the connectors are tight, the E-ring’s elasticity helps to maintain the pressure on the pinfields.

In addition to data and power transmission, the 91910-21521 connector is also designed to handle high-frequency signals and reduce crosstalk. This is done by optimizing the insulation between each pin and using an electroless nickel and immersion gold (ENIG) plating on the pinfields. This plating helps to increase pin lifetime by improving durability and resistance to wear and friction. Moreover, the gold plating also helps to reduce EMI and crosstalk due to the material’s low signal absorption.

Conclusion

In conclusion, the 91910-21521 is a high-density edge-type mezzanine card connector designed for high-reliability applications. It offers an economical and reliable solution for the transmission of data and power between printed circuit boards of various sizes. It has wide application field such as aviation, military, aerospace, telecommunications, and industrial automation equipment. In addition, its simple working principle along with its pinfields design, metal E-ring, and ENIG plating help to ensure connection integrity while optimizing electrical contact and signal transmission. Therefore, the 91910-21521 is an excellent choice for high-reliability connectors for a wide variety of applications.

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