Si53112

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Rev. 1.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • September 2, 2021

Table 27. PCB Land Pattern Dimensions

Dimension

mm

C1

8.90

C2

8.90

E0.50

X1

0.30

Y1

0.85

X2

6.20

Y2

6.20

Notes:

General

1. All dimensions shown are in millimeters (mm).

2. This Land Pattern Design is based on the IPC-7351 guidelines.

3. All dimensions shown are at Maximum Material Condition (MMC). Least Material

Condition (LMC) is calculated based on a Fabrication Allowance of 0.05 mm.

Solder Mask Design

4. All metal pads are to be non-solder mask defined (NSMD). Clearance between the

solder mask and the metal pad is to be 60 m minimum, all the way around the pad.

Stencil Design

5. A stainless steel, laser-cut and electro-polished stencil with trapezoidal walls

should be used to assure good solder paste release.

6. The stencil thickness should be 0.125 mm (5 mils).

7. The ratio of stencil aperture to land pad size should be 1:1 for all pads.

8. A 3x3 array of 1.45 mm square openings on a 2.00 mm pitch should be used for

the center ground pad.

Card Assembly

9. A No-Clean, Type-3 solder paste is recommended.

10. The recommended card reflow profile is per the JEDEC/IPC J-STD-020

specification for Small Body Components.