Any idea what these 45deg areas are for?

Cicero

Active Member

• Aug 3, 2015

• #1

I've just got hold of a STM32 Nucleo, and there are 4 x 45deg solder filled areas at the edges of the micro that got me curious.



Any ideas as to what they're for?

SMD stencil alignment? EMC?

 

Ian Rogers

User Extraordinaire

Forum Supporter

Most Helpful Member

• Aug 3, 2015

• #2

My guess would be a heat sink..

 

Cicero

Active Member

• Aug 3, 2015

• #3

Plausible guess there Ian.

 

JimB

Super Moderator

Most Helpful Member

• Aug 3, 2015

• #4

My guess is that it is for socket for a different package type.

JimB