EMP missile sort of.
This is scary stuff. This thing wipes out electronics.
People will look at this and say, AWESOME!!! non-lethal 100% effective. Here's the problem though, military forces can function without electronics, albeit at a lower effectiveness, modern civilian populations generally can't. We've become dependent on electronics for everything. This effectively being a non-lethal WMD could potentially send us back to the stone age in short order as its use will be treated as more acceptable than directly lethal options.
Now, imagine what would happen if say, New York suddenly lost all electronics, not a power outage, complete and permanent nullification of all of the electronic devices in the city. No cell phones, no radios, no sanitation, no transportation, nothing. *cough*