RJ45 outlets: Modules versus PCB based outlets

04.07.2023 | There are two versions of RJ45 outlets available: With modules that are snapped into a bezwo or a frame and with connecting blocks that are soldered into a common printed circuit board. Both versions have their specific benefits and drawbacks.

There is a multitude of RJ45 outlets around with different port numbers, different mounting type and different ways to connect the wires of a cable. Outlets can have large connecting blocks that are soldered into a larger printed circuit board (PCB). The German acronym LSA stands for “löt-, schraub- und abisolierfrei“ which means in English “no soldering, no screwing, no stripping of the wires necessary“. The wires are just pressed into the contacts of the connecting block using a special punch-down tool that also cuts excess wires.

RJ45 modules on the other hand are installed on the ends of each cable. The outlet is merely a bezel that accepts the modules.

Working with modules is quite simple, which is the reason why they are becoming more and more popular. Adding or replacing a link is very easy with modules, too. However, they protrude on the reverse side of the outlet which causes problems in flush-mount installations as very often they do not leave enough space for the cable. Here PCB-based outlets like the AMJ45 show their benefits: The wires of the cable are terminated in connecting blocks on the front side of the outlet, the cable entry on the revese side is parallel to the wall and can be rotated in steps of 45 degrees. This prevents the cable from being crushed or being kinked.

Author:

Dirk Traeger

Technical Solutions Manager DataVoice