Bought a Resonant Converter Accidentally

So, I was buying some stuff off Mouser and off the cuff decided to buy a transformer for a DIY dual-rail power supply. I wasn't paying enough attention and accidentally bought a Wurth 760895441 resonant converter (datasheet linked). I didn't notice until I was looking at the pinout and noticed the switching frequency was 70-120KHz.

I just tinker with this stuff for fun and had never heard of resonant converters. Am I correct in my assumption that this thing cannot just be directly hooked to mains like a Radio Shack special?