Electronic – SMT + DIP? (shell through hole)

connectordippcbsurface-mountusb

Hirose offers a Micro-B USB receptacle ZX62D-B-5PA8 as SMT + DIP.
This doesn't really make sense to me, considering that the electronic
contacts are SMD and the mechanical pins are just 0.8mm deep, less than
many PCB. I verified the pin depth in the IGES 3D model.

How is this mounted, i.e. how are the mechanical pins utilized?

Annotated screen shot showing receptacle in catalog page:

Screen shot of catalog page

Annotated screen shot showing SMT + DIP in catalog's table of contents:

Screen shot of catalog table of contents

Best Answer

SMD offers very little mechanical strength, and there is a fairly common failure mode for SMD microUSB connectors. Plated through holes for the case improve mechanical reliability.