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The OP

Published on 2021-6-23 07:29 Only look at the author

What is the function of this solder joint on the PCB? [Copy link]

In the following two pictures, what is the function of P$1? Why is P$1 written there? It seems to be connected to the USB shell. What is its function?

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HW_WANG

Is it a test point? Details Published on 2021-7-9 13:53

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qwqwqw2088

2w Posts	341 Resources

Published on 2021-6-23 07:48 Only look at the author

How the symbol is named is secondary.

To see how the schematic is connected,

The USB shell can be grounded or not.

There are still many groundings, that is, the corresponding pins of the shell are directly connected to the signal ground

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kafeijiang

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Published on 2021-6-23 12:00 Only look at the author

It feels like a ground wire, similar to the function of a shielding layer, so the naming should not be too particular.

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bqgup

693 Posts	7 Resources

Published on 2021-6-24 17:25 Only look at the author

Some of the USB fixed pins will be connected to the ground to play a shielding role. The name can actually be named arbitrarily when drawing the PCB component library. It is usually named in English.

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HW_WANG

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Published on 2021-7-9 13:53 来自手机 Only look at the author

Is it a test point?

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