8.1 Si5332A/B/C/D 48-QFN Land Pattern
Figure 8.1. 48-QFN Land Pattern Table 8.1. PCB Land Pattern Dimensions
Dimension mm
C1 5.90
C2 5.90
e 0.40 BSC
X1 0.20
Y1 0.85
X2 3.60
Y2 3.60
Si5332 Data Sheet
PCB Land Pattern
silabs.com | Building a more connected world. Rev. 1.3 | 61
Dimension mm Notes:
General
1. All dimensions shown are in millimeters (mm) unless otherwise noted.
2. This Land Pattern Design is based on the IPC-7351 guidelines.
Solder Mask Design
1. All metal pads are to be non-solder mask defined (NSMD). Clearance between the solder mask and the metal pad is to be 60 µm minimum, all the way around the pad.
Stencil Design
1. A stainless steel, laser-cut and electro-polished stencil with trapezoidal walls should be used to assure good solder paste release.
2. The stencil thickness should be 0.125 mm (5 mils).
3. The ratio of stencil aperture to land pad size can be 1:1 for all perimeter pads.
4. The stencil aperture to land pad size recommendation is 70% paste coverage.
Card Assembly
1. A No-Clean, Type-3 solder paste is recommended.
2. The recommended card reflow profile is per the JEDEC/IPC J-STD-020 specification for Small Body Components.
Si5332 Data Sheet
PCB Land Pattern
8.2 Si5332A/B/C/D 40-QFN Land Pattern
Figure 8.2. 40-QFN Land Pattern Table 8.2. PCB Land Pattern Dimensions
Dimension mm
C1 5.90
C2 5.90
e 0.50 BSC
X1 0.30
Y1 0.85
X2 4.65
Y2 4.65
Si5332 Data Sheet
PCB Land Pattern
silabs.com | Building a more connected world. Rev. 1.3 | 63
Dimension mm Notes:
General
1. All dimensions shown are in millimeters (mm) unless otherwise noted.
2. This Land Pattern Design is based on the IPC-7351 guidelines.
Solder Mask Design
1. All metal pads are to be non-solder mask defined (NSMD). Clearance between the solder mask and the metal pad is to be 60 µm minimum, all the way around the pad.
Stencil Design
1. A stainless steel, laser-cut and electro-polished stencil with trapezoidal walls should be used to assure good solder paste release.
2. The stencil thickness should be 0.125 mm (5 mils).
3. The ratio of stencil aperture to land pad size can be 1:1 for all perimeter pads.
4. The stencil aperture to land pad size recommendation is 70% paste coverage.
Card Assembly
1. A No-Clean, Type-3 solder paste is recommended.
2. The recommended card reflow profile is per the JEDEC/IPC J-STD-020 specification for Small Body Components.
Si5332 Data Sheet
PCB Land Pattern
8.3 Si5332A/B/C/D 32-QFN Land Pattern
The figure below illustrates the PCB land pattern details for Si5332 in 32-QFN package. The table below lists the values for the dimen-sions shown in the illustration.
Figure 8.3. 32-QFN Land Pattern Table 8.3. PCB Land Pattern Dimensions
Dimension mm
C1 4.90
C2 4.90
e 0.50 BSC
X1 0.30
Y1 0.85
X2 3.60
Y2 3.60
Si5332 Data Sheet
PCB Land Pattern
silabs.com | Building a more connected world. Rev. 1.3 | 65
Dimension mm Notes:
General
1. All dimensions shown are in millimeters (mm) unless otherwise noted.
2. This Land Pattern Design is based on the IPC-7351 guidelines.
Solder Mask Design
1. All metal pads are to be non-solder mask defined (NSMD). Clearance between the solder mask and the metal pad is to be 60 µm minimum, all the way around the pad.
Stencil Design
1. A stainless steel, laser-cut and electro-polished stencil with trapezoidal walls should be used to assure good solder paste release.
2. The stencil thickness should be 0.125 mm (5 mils).
3. The ratio of stencil aperture to land pad size can be 1:1 for all perimeter pads.
4. The stencil aperture to land pad size recommendation is 70% paste coverage.
Card Assembly
1. A No-Clean, Type-3 solder paste is recommended.
2. The recommended card reflow profile is per the JEDEC/IPC J-STD-020 specification for Small Body Components.
Si5332 Data Sheet
PCB Land Pattern
8.4 Si5332E/F/G/H/L 48-LGA Land Pattern
Figure 8.4. 48-LGA Land Pattern Table 8.4. PCB Land Pattern Dimensions
Dimension mm
C1 5.52
C2 5.52
e 0.40 BSC
X1 0.20
Y1 0.50
X2 2.60
Y2 2.60
Si5332 Data Sheet
PCB Land Pattern
silabs.com | Building a more connected world. Rev. 1.3 | 67
Dimension mm Notes:
General
1. All dimensions shown are in millimeters (mm) unless otherwise noted.
2. This Land Pattern Design is based on the IPC-7351 guidelines.
Solder Mask Design
1. All metal pads are to be non-solder mask defined (NSMD). Clearance between the solder mask and the metal pad is to be 60 µm minimum, all the way around the pad.
Stencil Design
1. A stainless steel, laser-cut and electro-polished stencil with trapezoidal walls should be used to assure good solder paste release.
2. The stencil thickness should be 0.125 mm (5 mils).
3. The ratio of stencil aperture to land pad size can be 1:1 for all perimeter pads.
4. The package e-pad is partitioned as a 2x2 array. The stencil aperture to land pad size recommendation is 70% paste coverage.
Card Assembly
1. A No-Clean, Type-3 solder paste is recommended.
2. The recommended card reflow profile is per the JEDEC/IPC J-STD-020 specification for Small Body Components.
Si5332 Data Sheet
PCB Land Pattern
8.5 Si5332E/F/G/H/L 40-LGA Land Pattern
Figure 8.5. 40-LGA Land Pattern Table 8.5. PCB Land Pattern Dimensions
Dimension mm
C1 5.52
C2 5.52
e 0.50 BSC
X1 0.30
Y1 0.50
X2 2.60
Y2 2.60
Si5332 Data Sheet
PCB Land Pattern
silabs.com | Building a more connected world. Rev. 1.3 | 69
Dimension mm Notes:
General
1. All dimensions shown are in millimeters (mm) unless otherwise noted.
2. This Land Pattern Design is based on the IPC-7351 guidelines.
Solder Mask Design
1. All metal pads are to be non-solder mask defined (NSMD). Clearance between the solder mask and the metal pad is to be 60 µm minimum, all the way around the pad.
Stencil Design
1. A stainless steel, laser-cut and electro-polished stencil with trapezoidal walls should be used to assure good solder paste release.
2. The stencil thickness should be 0.125 mm (5 mils).
3. The ratio of stencil aperture to land pad size can be 1:1 for all perimeter pads.
4. The package e-pad is partitioned as a 2x2 array. The stencil aperture to land pad size recommendation is 70% paste coverage.
Card Assembly
1. A No-Clean, Type-3 solder paste is recommended.
2. The recommended card reflow profile is per the JEDEC/IPC J-STD-020 specification for Small Body Components.
Si5332 Data Sheet
PCB Land Pattern
8.6 Si5332E/F/G/H/L 32-LGA Land Pattern
The figure below illustrates the PCB land pattern details for Si5332 in 32-LGA package. The table below lists the values for the dimen-sions shown in the illustration.
Figure 8.6. 32-LGA Land Pattern Table 8.6. PCB Land Pattern Dimensions
Dimension mm
C1 4.50
C2 4.50
e 0.50 BSC
X1 0.30
Y1 0.45
X2 2.20
Y2 2.20
Si5332 Data Sheet
PCB Land Pattern
silabs.com | Building a more connected world. Rev. 1.3 | 71
Dimension mm Notes:
General
1. All dimensions shown are in millimeters (mm) unless otherwise noted.
2. This Land Pattern Design is based on the IPC-7351 guidelines.
Solder Mask Design
1. All metal pads are to be non-solder mask defined (NSMD). Clearance between the solder mask and the metal pad is to be 60 µm minimum, all the way around the pad.
Stencil Design
1. A stainless steel, laser-cut and electro-polished stencil with trapezoidal walls should be used to assure good solder paste release.
2. The stencil thickness should be 0.125 mm (5 mils).
3. The ratio of stencil aperture to land pad size can be 1:1 for all perimeter pads.
4. The stencil aperture to land pad size recommendation is 70% paste coverage.
Card Assembly
1. A No-Clean, Type-3 solder paste is recommended.
2. The recommended card reflow profile is per the JEDEC/IPC J-STD-020 specification for Small Body Components.
Si5332 Data Sheet