EM260-RCM-USART-R Ember, EM260-RCM-USART-R Datasheet - Page 42
EM260-RCM-USART-R
Manufacturer Part Number
EM260-RCM-USART-R
Description
EM260 RCM BOARD
Manufacturer
Ember
Type
Transceiver, 802.15.4/ZigBeer
Datasheet
1.EM260-RCM-USART-R.pdf
(54 pages)
Specifications of EM260-RCM-USART-R
Frequency
2.4GHz
For Use With/related Products
EM260
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
636-1025
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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
Page 42
st
pin.
Figure 20. Solder Mask Dimensions
EM260
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