EM260-BBRD-128K-USART-R Ember, EM260-BBRD-128K-USART-R Datasheet - Page 42

• Manufacturer Part Number: EM260-BBRD-128K-USART-R
• Description: EM260 BREAKOUT BOARD
• Manufacturer: Ember
• Type: Transceiver, 802.15.4/ZigBeer

Specifications of EM260-BBRD-128K-USART-R

• Frequency: 2.4GHz
• For Use With/related Products: EM260
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 636-1026

10 QFN40 Footprint
120-0260-000J
Figure 18 demonstrates the IPC-7351 recommended PCB footprint for the EM260 (QFN50P600x600x90-41). A
ground pad in the bottom center of the package forms a 41
A 3 x 3 array of non-thermal vias should connect the EM260 decal center shown in Figure 18 to a PCB ground
plane. To properly solder the EM260 to the footprint, the Paste Mask layer (shown in Figure 19) should have a
3 x 3 array of circular openings at 0.076mm diameter spaced approximately 1.525mm apart (center to center).
The solder mask (shown in Figure 20) has the same dimensions as the copper pour. This will force an evenly
distributed solder flow and coplanar attachment to the PCB.
For more information on the package footprint, please refer to the EM260 Reference Design.
Figure 19. Paste Mask Dimensions
Figure 18. PCB Footprint for the EM260
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st
pin.
Figure 20. Solder Mask Dimensions
EM260