What's so great about these?
It kills electronics without killing people. Easy way to 'bomb somebody back to the stone age' without actually hurting anyone (well, obviously, loss of electronics sucks, but for a near third-world country like Iraq, this kind of thing could be VERY useful).
Instead of having to use TacNukes to get at deeply buried bunkers, just set one of these off over it. It will overload the powerlines and fry all the electronics in the bunker. Sure, they're still hundreds of feet underground, and sure they're still alive. But they ain't going anywhere, and they ain't doin NOTHING down there.