Author Topic: Microcontroller boards with USB protection diodes?  (Read 358 times)

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Offline ledtester

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Microcontroller boards with USB protection diodes?
« on: June 15, 2021, 02:18:44 am »
Hi all!

I was wondering if there are any microcontroller boards which have some sort of USB capability (e.g. either a USB-UART chip or the microcontroller itself has USB capability) and the board has USB protection diodes protecting the lines.

I suppose I could just take the design files for something like a STM32 Bluepill and just add them, but if there was a module available for sale that already had them so much the better.



 

Online PCB.Wiz

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Re: Microcontroller boards with USB protection diodes?
« Reply #1 on: June 15, 2021, 04:44:44 am »
 The EFM8UB3 Thunderboard shows a SP1001-04 ESD protection diode.
and I see the EFM32 Happy Gecko Starter Kit shows PRTR5V0U2F ESD protection diode.
« Last Edit: June 15, 2021, 04:49:14 am by PCB.Wiz »
 
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Offline mac.6

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Re: Microcontroller boards with USB protection diodes?
« Reply #2 on: June 15, 2021, 07:13:40 am »
Any serious dev boards made by reputable manufacturer will have them (ie, no cheap blue/black/red pill)...
 

Online peter-h

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Re: Microcontroller boards with USB protection diodes?
« Reply #3 on: June 15, 2021, 02:18:56 pm »
USB protection is best done with a sturdy standalone clamping device e.g. USBLC6-2



Anything anybody can put on a uC chip is not going to cut the mustard, as they say :)
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