Si5338G-A-GM Silicon Laboratories Inc, Si5338G-A-GM Datasheet - Page 38

• Manufacturer Part Number: Si5338G-A-GM
• Description: Clock Generators & Support Products I2C-PRGRMBL clock generatr 0.16-700MHz
• Manufacturer: Silicon Laboratories Inc

Specifications of Si5338G-A-GM

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Si5338
10. Recommended PCB Layout
38
Notes:
General
Solder Mask Design
Stencil Design
Card Assembly
1. All dimensions shown are in millimeters (mm) unless otherwise noted.
2. Dimensioning and Tolerancing per ANSI Y14.5M-1994 specification.
3. This Land Pattern Design is based on the IPC-7351 guidelines.
4. Connect the center ground pad to a ground plane with no less than five vias. These 5 vias should have a length of no
5. All metal pads are to be non-solder mask defined (NSMD). Clearance between the solder mask and the metal pad is
6. A stainless steel, laser-cut and electro-polished stencil with trapezoidal walls should be used to assure good solder
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 for all perimeter pins.
9. A 2x2 array of 1.0 mm square openings on 1.25 mm pitch should be used for the center ground pad.
10. A No-Clean, Type-3 solder paste is recommended.
11. The recommended card reflow profile is per the JEDEC/IPC J-STD-020 specification for Small Body Components.
more than 20 mils to the ground plane. Via drill size should be no smaller than 10 mils. A longer distance to the ground
plane is allowed if more vias are used to keep the inductance from increasing.
to be 60 µm minimum, all the way around the pad.
paste release.
Dimension
P1
P2
X1
Y1
C1
C2
E
Table 18. PCB Land Pattern
2.50
2.50
0.20
0.75
Min
Rev. 1.0
3.90
3.90
0.50
Nom
2.55
2.55
0.25
0.80
Max
2.60
2.60
0.30
0.85