Seeed Studios RS232 Shield Missing ESD Zener Diodes

Hi there,

So , If there’s a schematic viewer on the wiki page for the product in question, you can see if they are Marked “DNP” (Do Not Populate) often that will be that case and it’s an Option. or the IC may already contain them. YMMV

Seedineers can respond. and/or perhaps they can be added.

HTH
GL :slight_smile: PJ :v: