Figure 5: Heating The Module With Hot Air Soldering Gun; Figure 6: Check Whether The Solder Is Molten; Figure 7: Remove The Hot Air Soldering Gun - SimCom SIM300DZ Manuallines

SMT module de-soldering and rework Guidelines
take equably heating to the pads of the module for 2 or 3 minutes to melt the solder

Figure 5: Heating the module with hot air soldering gun

Check whether the solder is molten.
On the condition of the solder is molten, remove the hot air soldering gun reposefully and
vertically. Care should be taken that the pads of module and other components are not
damaged during remove the hot air soldering gun.
At the moment when the solder on all pad is molten, the module can be removed by a pair of
tweezers. Firstly, insert one tip of the tweezers into the gap between module and the PCBA,
then pick up the module carefully.
Module de-soldering and rework _UGD_V1.01
Make the hot air
soldering gun is
held vertically
to the PCBA

Figure 6: check whether the solder is molten

Figure 7: Remove the hot air soldering gun

10
Assure the square
nozzle can totally
cove the module
Check whether the
solder is molten
with the tweezee
07.12.2009