It is actually quite self-explanatory: if an action that is intended to protect one party (US electronics manufacturers) at the expense of another party ends up instead harming the former, then by definition said action is good for no one.
In this case, where the US imposed tariffs on electronic components from China, every country that imports electronic components from China except the US.
Do you have any references/information showing that it harms the majority of US electronics manufacturers? Just wondering how you came to that conclusion