particle-iot / electron

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Reduce size of the 2.2uH inductor pad #26

Closed brandoaire closed 9 years ago

brandoaire commented 9 years ago

screenshot 2015-08-28 14 13 35

Feedback from beta unit run, line 2

brandoaire commented 9 years ago

From @ericyuanyong According to the DFM report from ABO. We need to replace the footprint of Diode(U$3) to avoid the misalign issue for the diode when go through re-flow oven. But In that this footprint was also used on Core and Photon, so should we change it this time.

As the inductor's issue, I remember the reason we changed the footprint of this inductor(U$4) was because we want to have another choice for inductor. So we had decided only use part number for this inductor?

brandoaire commented 9 years ago

The inductor we purchased was Bourns / SRP4020TA-2R2M

Datasheet here: http://www.bourns.com/data/global/pdfs/SRP4020TA.pdf