si514 Silicon Laboratories, si514 Datasheet - Page 30

• Manufacturer Part Number: si514
• Description: Any-frequency I 2c Programmable Xo 100 Khz To 250 Mhz
• Manufacturer: Silicon Laboratories

Si 514
11. PCB Land Pattern: 3.2 x 5.0 mm, 6-pin
Figure 13 illustrates the 3.2 x 5.0 mm PCB land pattern for the Si514. Table 16 lists the values for the dimensions
shown in the illustration.
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Notes:
General
Solder Mask Design
Stencil Design
Card Assembly
1. All dimensions shown are in millimeters (mm) unless otherwise noted.
2. Dimensioning and Tolerancing is per the ANSI Y14.5M-1994 specification.
3. This Land Pattern Design is based on the IPC-7351 guidelines.
4. All dimensions shown are at Maximum Material Condition (MMC). Least Material
5. All metal pads are to be non-solder mask defined (NSMD). Clearance between the
6. A stainless steel, laser-cut and electro-polished stencil with trapezoidal walls
7. The stencil thickness should be 0.125 mm (5 mils).
8. The ratio of stencil aperture to land pad size should be 1:1.
9. A No-Clean, Type-3 solder paste is recommended.
10. The recommended card reflow profile is per the JEDEC/IPC J-STD-020
Condition (LMC) is calculated based on a Fabrication Allowance of 0.05 mm.
solder mask and the metal pad is to be 60 µm minimum, all the way around the
pad.
should be used to assure good solder paste release.
specification for Small Body Components.
Dimension
Figure 13. Si514 Recommended PCB Land Pattern
Table 16. PCB Land Pattern Dimensions (mm)
C1
X1
Y1
E
Preliminary Rev. 0.9
(mm)
2.60
1.27
0.80
1.70