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SMT Guidelines Module de-soldering and rework_UGD_V1.01...
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Document Control ID: General Notes Simcom offers this information as a service to its customers, to support application and engineering efforts that use the products designed by Simcom. The information provided is based upon requirements specifically provided to Simcom by the customers. Simcom has not undertaken any independent search for additional relevant information, including any information that may be in the customer’s possession.
SMT module de-soldering and rework Guidelines Contents Version history..........................5 1 Scope of the document........................6 2 Manual soldering tools........................7 2.1 Manual soldering tools introduction..................7 3 Preparation before manual soldering .....................8 4 Manual de-soldering process ......................9 4.1 PCBA with Single side components placement ..............9 4.2 PCBA with both sides components placement..............9 5 Basic considerations for manual de-soldering ................12 Module de-soldering and rework _UGD_V1.01...
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SMT module de-soldering and rework Guidelines List of Figures 1: M .....................7 IGURE ANUAL SOLDERING TOOLS 2: C ..................7 IGURE USTOMIZED SQUARE HOT AIR TIP 3: H .......................8 IGURE OLDING IN REVERSE 4: D ..................9 IGURE SOLDERING WITH PREHEATER 5: H ..........10 IGURE EATING THE MODULE WITH HOT AIR SOLDERING GUN...
SMT module de-soldering and rework Guidelines Version history Date Version Description of change Author 2008-12-07 01.01 Origin Module de-soldering and rework _UGD_V1.01 07.12.2009...
SMT module de-soldering and rework Guidelines 1 Scope of the document This document is intended for the following versions of the SIMCom modules: •SIM300DZ •SIM340DZ •SIM300W •SIM340W •SIM700D Module de-soldering and rework _UGD_V1.01 07.12.2009...
PCBA. If there are some big size DIP package components nearby the SIM300DZ module such as electrolytic capacitors, potentiometers which intervenes the SIM300DZ module to be heating by hot air soldering gun.
Hot air heating the pads of the SIM300DZ module Check whether the solder is molten Remove the nozzle of the hot air soldering gun and remove the SIM300DZ module with a pair of tweezers Put the SIM300DZ module on the smoke absorber for cooling down 4.1 PCBA with Single side components placement...
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 Make the hot air Assure the square soldering gun is nozzle can totally held vertically cove the module to the PCBA Figure 5: Heating the module with hot air soldering gun Check whether the solder is molten.
SMT module de-soldering and rework Guidelines Figure 8: Pick up the module with a pair of tweezers Let the unsoldered SIM300DZ module cool down in the environmental temperature. Assure the module can not be swashed and overturned during the whole process of cooling down.
SMT module de-soldering and rework Guidelines 5 Basic considerations for manual de-soldering Basic considerations for manual de-soldering: Immobility: Do not allow the parts to move during solidification of the solder. The end of the period of solidification of the solder can be observed by a sudden change in the appearance of the solder surface.
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SMT module de-soldering and rework Guidelines Contact us: Shanghai SIMCom Wireless Solutions Ltd. Add: Building A,SIM Technology Building,No.633,Jinzhong Road,Changning District, Shanghai,P. R. China 200335 Tel: +86 21 3252 3300 Fax: +86 21 3252 3301 URL: www.sim.com/wm Module de-soldering and rework _UGD_V1.01...
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