EM341-RTR datasheet(223/237 Pages) SILABS

Il numero della parte	EM341-RTR

Spiegazioni elettronici	High-Performance, Integrated RF4CE System-on-Chip

PDF	237 Pages

Scroll/Zoom	100%

Produttore elettronici	SILABS [Silicon Laboratories]

Homepage	http://www.silabs.com

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223 / 237 page

EM341

130

Rev 1.0

Figure 18.2. Solder Mask Dimensions

Table 18.2. PCB Land Pattern

Dimension

Min

Max

6.80

6.90

6.80

6.90

0.50 BSC

0.20

0.30

5.20

5.40

0.75

0.85

5.20

5.40

Notes:

General

All dimensions shown are in millimeters (mm) unless otherwise noted.

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

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 60mm minimum, all the way around the pad.

Stencil Design

A stainless steel, laser-cut and electro-polished stencil with trapezoidal walls should be used to assure good solder

paste release.

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

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

A 4x4 array of 1.1 mm square openings on 1.3 mm pitch can be used for the center ground pad.

Card Assembly

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

The recommended card reflow profile is per the JEDEC/IPC J-STD-020C specification for Small Body Components.

EM341-RTR Scheda tecnica(PDF) 223 Page - Silicon Laboratories