S i M 3 L 1 x x
80
Rev 1.1
6.5.1. QFN-64 Solder Mask Design
All metal pads are to be non-solder mask defined (NSMD). Clearance between the solder mask and the metal pad
is to be 60
μ
m minimum, all the way around the pad.
6.5.2. QFN-64 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 should be 1:1 for all pads.
4. A 3x3 array of 1.0 mm square openings on a 1.5 mm pitch should be used for the center ground pad.
6.5.3. QFN-64 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.
Содержание SiM3L1xx
Страница 2: ...2 Rev 1 1 ...
Страница 55: ...SiM3L1xx Rev 1 1 55 6 Pin Definitions 6 1 SiM3L1x7 Pin Definitions Figure 6 1 SiM3L1x7 GQ Pinout ...
Страница 62: ...SiM3L1xx 62 Rev 1 1 6 2 SiM3L1x6 Pin Definitions Figure 6 2 SiM3L1x6 GQ Pinout ...
Страница 63: ...SiM3L1xx Rev 1 1 63 Figure 6 3 SiM3L1x6 GM Pinout ...
Страница 69: ...SiM3L1xx Rev 1 1 69 6 3 SiM3L1x4 Pin Definitions Figure 6 4 SiM3L1x4 GM Pinout ...
Страница 74: ...SiM3L1xx 74 Rev 1 1 6 4 TQFP 80 Package Specifications Figure 6 5 TQFP 80 Package Drawing ...
Страница 81: ...SiM3L1xx Rev 1 1 81 6 6 TQFP 64 Package Specifications Figure 6 9 TQFP 64 Package Drawing ...
Страница 89: ...SiM3L1xx Rev 1 1 89 Figure 7 3 SiM3L1x4 GM Revision Information ...