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Maybe this is what you want to know-RJ45 performance indicators?

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Author : CETUS INTL
Update time : 2023-12-19 14:19:33
Want to know the performance metrics of Registered Jack45? Welcome to this article!

Regarding the performance indicators of rj45 connectors...
The performance indicators of RJ45 also include attenuation, near-end crosstalk, insertion loss, return loss and far-end crosstalk.
RJ45 performance technical description
Contact resistance is 2.5mΩ
Insulation resistance is 1000mΩ
Electrical strength is DC1000V (AC700V)
The surface of the snap-in spring is gold-plated or silver-plated, and the available wiring diameter is 0.4mm~0.6mm.
You can plug and unplug the plug and socket repeatedly no less than 750 times; the 8-wire contact pin is gold-plated 509 (inch).

rj45 connectors

Among these performance requirements, crosstalk is an important factor to consider during design.
To improve the transmission performance of the entire link, sockets often utilize crosstalk cancellation technology. Crosstalk cancellation tech creates a signal equal in size to the interference, but in the opposite direction. The signal then eliminates the crosstalk.
The modular plug represents the crosstalk interference as "++++". "----" represents the opposite crosstalk generated by the socket. When two crosstalk signals are equal in magnitude and opposite in polarity. The total magnitude of the coupled crosstalk interference signal is zero.

Difference RJ11
There will also be an RJ11 interface on a household ADSL Modem. The RJ11 interface is slightly smaller than the RJ45 interface and people mainly use it to connect telephone lines.
Note that the RJ11 interface has either 4 or 6 pins, whereas the RJ45 interface has 8 pins.
Therefore, you cannot insert the RJ45 plug into the RJ11 interface. Contrarily, you cannot insert the RJ11 plug into the RJ45 interface.
You must clearly distinguish it in actual use. The RJ45 fixed link is compatible with RJ11. The wire pairs 3-6 and 4-5 in RJ45 correspond to the wire pairs 1-4 and 2-3 in RJ11.