USB input with 6.1V overvoltage off, 40V voltage protection, single lithium battery 1A charging management board - PCB design scheme - Wuxi PWChip Semi Technology CO., LTD
![filter - USB-C port circuit design: ESD, filtering, short-circuit protection - Electrical Engineering Stack Exchange filter - USB-C port circuit design: ESD, filtering, short-circuit protection - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/S52JD.png)
filter - USB-C port circuit design: ESD, filtering, short-circuit protection - Electrical Engineering Stack Exchange
![diodes - Can anyone explain this USB ESD protection circuit? - Electrical Engineering Stack Exchange diodes - Can anyone explain this USB ESD protection circuit? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/dB221.png)