SI5100 Silicon Laboratories, SI5100 Datasheet - Page 37

• Manufacturer Part Number: SI5100
• Description: OC-48/STM-16 SONET/SDH TRANSCEIVER
• Manufacturer: Silicon Laboratories

www.DataSheet4U.com
20. 15x15 mm 195L CBGA Recommended PCB Layout
Notes:
Symbol
1. The Placement Courtyard is the minimum keep-out area required to assure assembly clearances.
2. Pad Diameter is Copper Defined (Non-Solder Mask Defined/NSMD).
3. OSP Surface Finish Recommended
4. Controlling dimension is millimeters.
5. Land Pad Dimensions comply with IPC-SM-782 guidelines.
6. Target solder paste volume per pad is 0.065 mm3 ± 0.010 mm3 (4000 mils3 ± 600 mils3).
7. Recommended stencil type is chemically etched stainless steel with circularly tapered apertures.
C
D
E
F
X
Recommended stencil aperture dimensions to achieve target solder paste volume are 0.191mm
thick x 0.68±0.01 mm diameter, with a 0.025 mm taper.
Placement Courtyard
Column Width
Pad Diameter
Row Height
Parameter
Pad Pitch
Placement Courtyard
16.00
0.64
Min
—
—
—
Rev. 1.1
Dimension
13.00 REF
13.00 REF
1.00 BSC
Nom
0.68
—
Max
0.72
—
—
—
—
Notes
2, 3
1
Si5100
37