223955-8

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Backplane Connectors - Specialized category encompasses a wide range of connectors designed for special purpose applications where standard backplane connectors are unsuitable. This article focuses on the 223955-8 application field and working principle.

223955-8 is a Card Edge connector used primarily for high speed interconnections. It provides low insertion loss for high speed differential signal transmission and is suitable for up to 28 Gbps data rate. It is designed for use in low-profile short card edge applications, specifically devices such as cellular phones, digital cameras and computer devices.

The connector has a rectangular shape with two rows of high-speed contacts, providing asymmetrical rows of signal pins. It has a total of 34 contacts arranged in 17 pairs, including 14 differential pairs plus four single ended contacts. The connector has a single row, solder-buck style pin connection providing good cable retention, reduced test time and a secure connection.

The connector’s working principle is based on a ground shield, along with a signal and power ground surround the conductors. The ground shield helps to reduce crosstalk and noise by providing a low impedance path for return currents from the transmitted signals. The signal and power grounds form a loop around the differential pairs which helps to dampen the effect of transient noise and provide better signal integrity. The combination of the ground shield and the two ground rings helps to reduce noise and crosstalk and maintain signal quality over long distances.

The connector also has a number of features which help to improve its performance. It has a low insertion loss and a noise rejection of 60 dB which supports the transmission of high speed differential signals over longer distance cables. It also has a wide temperature range of -40 to +85 degrees Celsius with a high resistance to vibration and shock.

In conclusion, the 223955-8 is a high-speed interconnect Card Edge connector designed for use in low-profile applications. It utilizes a ground shield and two ground rings to reduce noise and crosstalk, along with additional features such as a low insertion loss and a wide temperature range. The 223955-8 is suitable for up to a 28 Gbps data rate and provides a secure connection with good cable retention for maximum signal integrity.

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