EM357-RTR Ember, EM357-RTR Datasheet - Page 229
![IC RF TXRX ZIGBEE 192KB 48QFN](/photos/14/19/141904/636-48-qfn_sml.jpg)
EM357-RTR
Manufacturer Part Number
EM357-RTR
Description
IC RF TXRX ZIGBEE 192KB 48QFN
Manufacturer
Ember
Specifications of EM357-RTR
Frequency
2.4GHz
Data Rate - Maximum
250kbps
Modulation Or Protocol
802.15.4 Zigbee
Applications
General Purpose
Power - Output
5dBm
Sensitivity
-100dBm
Voltage - Supply
2.1 V ~ 3.6 V
Current - Receiving
26mA
Current - Transmitting
31mA
Data Interface
PCB, Surface Mount
Memory Size
192kB Flash, 12kB RAM
Antenna Connector
PCB, Surface Mount
Operating Temperature
-40°C ~ 85°C
Package / Case
48-QFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
636-1011-2
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
EM357-RTR
Manufacturer:
SILICON
Quantity:
3 000
Part Number:
EM357-RTR
Manufacturer:
SILICON
Quantity:
20 000
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19.2 Solder Temperature Profile
Figure 19-5 illustrates the solder temperature profile for the EM35x. This temperature profile is similar for
other RoHS compliant packages, but manufacturing lines should be programmed with this profile in order to
guarantee proper solder connection to the PCB.
Table 19-1 contains the temperature profile parameters.
Average Ramp Up Rate (from Tsoak
Maximum Soak Temperature (Tsoak
Minimum Soak Temperature (Tsoak
Time within 5°C of Tpeak
Time from 25°C to Tpeak
Ramp Down Rate
Time above TL
Parameter
Tpeak
Table 19-1. Solder Reflow Parameters
TL
Figure 19-5. EM35x Reflow Profile
Final
19-3
max
to Tpeak)
min
max
)
)
EM351 / EM357
3°C per second max
6°C per second max
60 – 150 seconds
20 – 40 seconds
8 minutes, max
260 + 0°C
Value
150°C
200°C
217°C
120-035X-000G
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