I found the following part on a circuit board, but I have never seen anything like it before and I am curious.
The blue part is about 1cm long, 5mm high, 4mm thick, and vaguely cylindrically shaped.
There are no further prints on the other side and the ones visible (to me) read
4.00, some kind of round logo and
N. I've tried to take a more detailled picture:
On the PCB, the part was labelled with
Can someone identify this part?