ZHCSEW6G may 2013 – november 2020 DS90UB913A-Q1
PRODUCTION DATA
Stencil parameters such as aperture area ratio and the fabrication process have a significant impact on paste deposition. Inspection of the stencil prior to placement of the WQFN package is highly recommended to improve board assembly yields. If the via and aperture openings are not carefully monitored, the solder may flow unevenly through the DAP. Stencil parameters for aperture opening and via locations are shown below:
DEVICE | PIN COUNT | MKT DWG | PCB I/O PAD SIZE (mm) | PCB PITCH (mm) | PCB DAP SIZE(mm) | STENCIL I/O APERTURE (mm) | STENCIL DAP APERTURE (mm) | NUMBER OF DAP APERTURE OPENINGS | GAP BETWEEN DAP APERTURE (Dim A mm) |
---|---|---|---|---|---|---|---|---|---|
DS90UB913A-Q1 | 32 | RTV | 0.25 x 0.6 | 0.5 | 3.1 x 3.1 | 0.25 x 0.7 | 1.4 x 1.4 | 4 | 0.2 |
The following PCB layout examples are derived from the layout design of the DS90UB913A-Q1 Evaluation Module (DS90UB913A-CXEVM and DS90UB914A-CXEVM REV A User’s Guide). These graphics and additional layout description are used to demonstrate both proper routing and proper solder techniques when designing in this Serializer.