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Understanding the RJ45 Jack #12

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zgibson21 opened this issue Mar 20, 2020 · 2 comments
Open

Understanding the RJ45 Jack #12

zgibson21 opened this issue Mar 20, 2020 · 2 comments

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@zgibson21
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I have a question about why this particular RJ45 jack was used. I can see that is has the magnetics built in but why does it also have a diode bridge rectifier? Is the rectifier necessary?
@TsvetanUsunov
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please read https://en.wikipedia.org/wiki/Power_over_Ethernet
DC power component uses same cable pairs as the AC data component, the bridge rectifier separates the DC from AC components.

@thermseekr
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I'm having a very hard time finding RJ45 jacks with integrated diode bridges. My usual sources are JLCPCB where I order my assembled PCBs from, and Mouser Electronics. Are there any other good sources you could share?
Thanks!

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@TsvetanUsunov @thermseekr @zgibson21