88921-166LF

Series:	Metral®
Packaging:	Tube
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Connector Usage:	--
Connector Type:	Header, Male Pins
Connector Style:	--
Number of Positions:	--
Number of Positions Loaded:	--
Pitch:	0.079" (2.00mm)
Number of Rows:	--
Number of Columns:	--
Mounting Type:	--
Termination:	--
Contact Layout, Typical:	--
Features:	--
Contact Finish:	Gold
Contact Finish Thickness:	30.0µin (0.76µm)
Color:	--
Current Rating:	--
Material Flammability Rating:	--
Operating Temperature:	--
Voltage Rating:	--

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Introduction

Backplane Connectors - Specialized are connectors used to transmit high speed signals through backplanes from one circuit board to another without unwanted interference. The 88921-166LF is one such specialized form of backplane connector and within this article we will discuss its application field and working principle.

Application Field

The 88921-166LF is designed for high-speed applications between 0.5 Gbps and 4 Gbps. It is not suitable for applications outside this speed due to its low crosstalk performance. Principally, it is used for applications such as PCI Express, USB 2.0, SATA, and Fibre Channel. Its application field is largely limited by its working principle, which is direct differential routing. As such, the 88921-166LF is particularly well suited for installation lengths with transmission speeds of up to 4 Gbps. It is not suitable for longer connections, however, as it would cause losses in transmission speed due to the increased length.

Working Principle

The 88921-166LF utilizes direct differential routing as its working principle in order to ensure high speed transmission. This technique takes the individual lines of a differential signal and runs them independently alongside each other through the backplane to the board, as opposed to the conventional technique of connecting the differential signals in a chain or ribbon. The benefit of this technique is twofold. Firstly, it decreases the levels of crosstalk generated due to the spacing of the two signals; secondly, it increases the signal integrity of the connection and allows for faster transmission speeds. The 88921-166LF is designed to handle signals up to 4 Gbps in transmission speed, however in order to reach its maximum potential, the length of the connection must be kept as short as possible. When the connection length increases, transmission speed decreases proportionally.

Conclusion

The 88921-166LF is a specialized backplane connector designed for demanding high-speed applications up to 4 Gbps. It utilizes direct differential routing as its working principle in order to ensure high signal integrity and reduce crosstalk. However, its performance drops off proportionally when the connection length increases.

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