Where to buy EMMC SDIN8DE2-16G?

The OSD3358-SM-RED board uses a standard 153 ball eMMC (11.5mm x 13mm). While it might be hard to source the exact part number, you can always swap it with footprint compatible eMMC parts that can be found at the major distributors (Arrow, Mouser, DigiKey, or Avnet). The only caveats are: 1) make sure that the part uses the 153 ball eMMC footprint and not the 169 or 100 pin footprints; 2) make sure that you have done the necessary things in layout to support the newer eMMC versions (this was not done on the OSD3358-SM-RED layout but will be done on the next revision of the board). See the Designing for Flexibility around eMMC app note for more information.

That component looks like it will work. Just make sure that your design follows the guidelines outlined in the app note referenced above.

Dear Erik,

I have some doubts. Hint, please ask what electric potential has the pin marked in yellow. If it is GND then why has a separate grommet. It can be connected to the central grommet.

Please find attached screen.

Bye

• This reply was modified 6 years, 3 months ago by Marcin_W.

Hello Marcin_W,

The pin you have marked is VSS (GND). Each via will have limit on how much current it can sink based on its drill size. Since the central GND via is already sinking current from 4 pins, we have used a separate ground via for pin J5 (VSS).