The connector is designed to provide a good high frequency connection between the sheild of the cable if any , a metal case if any and the sheild ground connections to the PCB. What about the center tap pins on the device, what do i do with them? I’ve no experience with this particular module and the documentation does not say much about those pins. Post as a guest Name. The more, the merrier.
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I guess once you have the metal shell to support connecting to the shield on shielded cables adding the wings has negligible extra cost. Steve 7 Sign up using Email and Password. Also, in a fairly typical setup, only some of the tabs will contact the panel e.
I think you’re judging from [too] small sample. What about the center tap pins on the device, what do i do with them?
Here’s a sample design.
network interface – Connecting a RJ45 MagJack – Electrical Engineering Stack Exchange
Armandas 6, 1 23 I also mentioned in the comments that you could contact Lantronix support or see where those lines are connected on the module. The magjacj is designed to provide a good high frequency connection between the sheild of the cable if anya metal case if any and the sheild ground connections to the Magjxck. While this will not help you to get the job done quicker, it may give you some good experience for your future projects.
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Sign up using Facebook. Look at TE’s catalog to see a whole bunch that don’t have magnetics but have “wings”.
RJ45 Ethernet MagJack
Email Required, but never shown. Post as a guest Name. They are called EMI fingers.
Now that it has become clear that you are using a Lantronix moduleas opposed to a PHY chipthe easiest solution is to find a MagJack that has both CT pins broken out, for example: So the two features are unrelated as features, but correlated due to price because MagJacks aren’t the cheapest RJ45’s in fact they are advertised as the “flagship product-line”so they come with all the other good bits, like shielding.
In that case, I’d recommend that you either find a connector with both of those pins broken out, or contact Lantronix and ask them what to do.
After all, they broke out the pins separately, presumably so magjak can swap phy’s on their modules while staying compatible with client’s hardware.
At high frequencies it’s not enough to have a single ground connection. And their purpose is to ensure a good high-frequency short-circuits between the shielded connector and the panel. Armandas As suggested by a comment i selected a mag jack that had both center dj45 broken out individually. Does this mean that i need to tie the center pins together on the device and hook them to the single pin on the rj445 or is there some other connection scheme i’m not aware of?
I’ve made a few things now using a RJ45 jack and a separate pulse transformer. Post as a guest Name. Hans 6, 1 20 The jack has the center tap pins tied together to a single pin.