I've noticed this connector on a lot of boards, and I was wondering if anyone knew where to source them? I can't seem to find them on digikey.com anywhere. What I'd really like is to get a male connector for this to breadboard the contacts. 
![enter image description here](https://i.stack.imgur.com/8bZoF.png)
![enter image description here](https://i.stack.imgur.com/LBpYa.png)