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User Manual
Version 01.00
2011-07-25
Radio modules deRFarm7
6. Soldering profile of deRFarm7
Table 5 gives the soldering profile for the radio modules.
Table 5: Soldering Profile
Profile Feature
Average-Ramp-up Rate (217°C to Peak)
Preheat Temperature 175°C ±25°C
Temperature Maintained Above 217°C
Time within 5°C of Actual Peak Temperature
Peak Temperature Range
Ramp-down Rate
Time 25°C to Peak Temperature
Values
3°C/sec max.
120 sec. max
60 sec.
20 sec. to 40 sec.
260°
6°C/sec max.
8 min. max.
Figure 9 shows a recorded soldering profile for a radio module. The blue colored line illus-
trates a temperature sensor placed next to the soldering-contacts of the radio module. The
pink line shows the set temperatures depending on the zone within the reflow soldering ma-
chine.
280
260
240
220
200
180
160
140
120
100
80
60
40
t [s]
Measured Temp.
Zone Temp.
Figure 9: Recorded soldering profile
A solder process without supply of nitrogen causes a discoloration of the metal RF-shielding.
dresden elektronik
ingenieurtechnik gmbh
Enno-Heidebroek-Str. 12
01237 Dresden / Germany
Tel.: +49 351 – 31 85 00
Fax: +49 351 – 3 18 50 10
wireless@dresden-elektronik.de
www.dresden-elektronik.de
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