structural reliability of PCB mounting a SMT style RJ45 pcb receptacle
structural reliability of PCB mounting a SMT style RJ45 pcb receptacle
(OP)
Given a choice between thro' hole RJ45 board mounted connector and SMT style of same I would prefer the thro' hole. For long term physical reliability risks due to stresses from Cat5 cable installation in the field, and fatigue on the solder joints from thermal cycling with cable load.
In my application there is no space for external strain relief or wire loop.
I am under pressure to save the $1 assembly vs SMT on a very cost sensitive product. I don't trust using the plastic housing to "clamp" the connector as it is unlikely to prevent strain on the pads "quickly" enough as it will deflect too.
So, if the team here insists on going SMT have any folks out there got any recommendations for board design (pad size / vias / etc.) of the "mechanical" pads and the conductor pads for reliability? Any suggestions for a good connector, and any supportive or cautionary tales on using SMT for this or similar connectors?
Thanks,
Nigel T
In my application there is no space for external strain relief or wire loop.
I am under pressure to save the $1 assembly vs SMT on a very cost sensitive product. I don't trust using the plastic housing to "clamp" the connector as it is unlikely to prevent strain on the pads "quickly" enough as it will deflect too.
So, if the team here insists on going SMT have any folks out there got any recommendations for board design (pad size / vias / etc.) of the "mechanical" pads and the conductor pads for reliability? Any suggestions for a good connector, and any supportive or cautionary tales on using SMT for this or similar connectors?
Thanks,
Nigel T
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RE: structural reliability of PCB mounting a SMT style RJ45 pcb receptacle
right angle or straight?
the straight ones have a fairly large extra tab to provide "strain relief"
and many of the RA ones feature either extra through hole tabs on the shield or other tabs..
RE: structural reliability of PCB mounting a SMT style RJ45 pcb receptacle
The solder joints will still see stress but the snaps should help some. This should be pretty easy to prototype and test to see what abuse the solder joints can take and if the snaps help.