RN131C/RM Roving Networks, RN131C/RM Datasheet - Page 9

• Manufacturer Part Number: RN131C/RM
• Description: WiFi / 802.11 Modules WiFly GSX 802.11b/g Mod Commercial Temp
• Manufacturer: Roving Networks

Specifications of RN131C/RM

• Product Category: WiFi / 802.11 Modules
• Rohs: yes
• Protocol Supported: 802.11 b/g
• Frequency Band: 2.4 GHz
• Data Rate: 11 Mbps, 54 Mbps
• Interface Type: SPI, UART
• Transmit Power (max): 18 dBm
• Antenna Connector Type: Chip, U.FL
• Operating Supply Voltage: 3.3 V
• Supply Current Transmitting: 210 mA
• Supply Current Receiving: 40 mA
• Maximum Operating Temperature: + 70 C
• Dimensions: 38 mm x 20 mm x 4 mm
• Minimum Operating Temperature: 0 C
• Modulation Technique: DSSS, OFDM
• Security: WEP, WPA, WPA2

Grounding Recommendations
For the module antenna to function, pins 36 through 44 must be connected to ground. Roving Networks suggests you
place the module such that 0.5 mm of theses pads is exposed. This placement provides access for soldering pins 36
through 44 from below, and provides ample clearance of the antenna from the PCB. See Figure 7.
Figure 7. Module Placement for Grounding
For Proper Antenna
Performance, Pins 36
Through 44 Must be
Grounded
Solder Reflow
The solder reflow temperature must not exceed 220° C. To reflow solder the module onto a PCB, Roving Networks
recommends an RoHS-compliant solder paste equivalent to NIHON ALMIT paste or OMNIX OM-310 solder paste from
Alpha metals. See Table 6.
Table 6. Paste Solder Recommendations
Figures 8 and 9 show the solder reflow temperature profiles.
www.rovingnetworks.com
Part Number
Metal Composition
Liquidus Temperature
NOTE: Use no-clean flux and DO NOT water wash.
Manufacturer
OMNIX OM-310
SAC305 (96.5% Sn, 3% Ag, 0.5% Cu)
~220°C
http://www.alphametals.com
Bottom View
Motherboard
for RN-131
RN-131
Alpha Metals
Version 3.2r 4/9/2012
8.5 mm
LFM-70W INP
88% Sn, 3.5% Ag, 0.5% Bi, 8% In
~215°C
NIHON ALMIT Co. LTD
http://almit.co.jp
RN -13 1-DS
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